eCNS600 V100R002

Feature Description

Draft

A

Date

2013-04-09

HUAWEI TECHNOLOGIES CO., LTD.

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eCNS600
Feature Description

Contents

Contents
1 Basic Features............................................................................................................................ 1
1.1 Basic Service ............................................................................................................................................. 1
1.1.1 eCNSFD-010200 Mobility Management ........................................................................................... 1
1.1.2 eCNSFD-010300 Security Management ............................................................................................ 3
1.1.3 eCNSFD-010400 Path Management .................................................................................................. 7
1.1.4 eCNSFD-010500 IP Address Allocation from Local Address Pool ..................................................... 8
1.1.5 eCNSFD-010600 Integrated Subscriber Data Management ................................................................ 9
1.1.6 eCNSFD-010700 Session Management ............................................................................................ 11
1.2 User Plane ................................................................................................................................................13
1.2.1 eCNSFD-030100 QoS and Traffic Management ...............................................................................13
1.3 IP Network Management ..........................................................................................................................13
1.3.1 eCNSFD-040100 Routing ................................................................................................................13
1.3.2 eCNSFD-040200 NTP .....................................................................................................................15
1.3.3 eCNSFD-040300 VLAN Supporting ................................................................................................16
1.3.4 eCNSFD-040500 Eth-Trunk.............................................................................................................18
1.3.5 eCNSFD-040600 OSPFv2 ...............................................................................................................19
1.3.6 eCNSFD-040700 VRF .....................................................................................................................21
1.3.7 eCNSFD-040800 Local Routing ......................................................................................................22
1.3.8 eCNSFD-040900 SGi Redirection ....................................................................................................23
1.4 Reliability.................................................................................................................................................25
1.4.1 eCNSFD-050200 Board Redundant Backup .....................................................................................25
1.5 Operation and Maintenance ......................................................................................................................26
1.5.1 eCNSFD-060100 Software Management ..........................................................................................26
1.5.2 eCNSFD-060300 Performance Management ....................................................................................27
1.5.3 eCNSFD-060400 Fault Management ................................................................................................29
1.5.4 eCNSFD-060500 Equipment Management .......................................................................................30
1.5.5 eCNSFD-060600 Configuration Management ..................................................................................32
1.5.6 eCNSFD-060700 Security Management ...........................................................................................33
1.5.7 eCNSFD-060800 Online Documentation ..........................................................................................35
1.5.8 eCNSFD-060900 Tracing Function ..................................................................................................36
1.5.9 eCNSFD-061000 Log Management .................................................................................................40
1.5.10 eCNSFD-061100 Daylight Saving Time .........................................................................................40
1.6 Interface Function.....................................................................................................................................41
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eCNS600
Feature Description

Contents

1.6.1 eCNSFD-070100 S1 Interface ..........................................................................................................41
1.6.2 eCNSFD-070200 SGi Interface ........................................................................................................43
1.6.3 eCNSFD-070300 S10 Interface ........................................................................................................44
1.6.4 eCNSFD-070400 S5 Interface ..........................................................................................................46
1.6.5 eCNSFD-070500 S8 Interface ..........................................................................................................47
1.6.6 eCNSFD-070600 Ga Interface .........................................................................................................49
1.6.7 eCNSFD-070700 S6a Interface ........................................................................................................50
1.7 Basic Platform ..........................................................................................................................................52
1.7.1 eCNSFD-080300 Linux Security Hardening.....................................................................................52

2 Optional Features ................................................................................................................... 56
2.1 Security Management ...............................................................................................................................56
2.1.1 eCNSFD-110001 NAS Encryption and Integrity Protection (AES) ...................................................56
2.1.2 eCNSFD-110002 NAS Encryption and Integrity Protection (SNOW3G) ...........................................57
2.1.3 eCNSFD-110003 O&M SSL ............................................................................................................58
2.2 Service Management ................................................................................................................................59
2.2.1 eCNSFD-110004 Static IP Address Allocation ..................................................................................59
2.2.2 eCNSFD-110005 Multiple PDN Connection ....................................................................................60
2.2.3 eCNSFD-110008 SPI-based QoS Profile Control..............................................................................61
2.2.4 eCNSFD-110009 Offline Charging ..................................................................................................62
2.2.5 eCNSFD-110011 UE IP Address assigned by the Radius AAA Server ...............................................66
2.2.6 eCNSFD-110012 E2E Subscriber Tracing ........................................................................................69
2.3 Reliability.................................................................................................................................................71
2.3.1 eCNSFD-110006 eCNS Redundancy ...............................................................................................71
2.4 Networking ..............................................................................................................................................72
2.4.1 eCNSFD-110007 Bidirectional Forwarding Detection (BFD) ...........................................................72
2.4.2 eCNSFD-110010 Routing Behind MS ..............................................................................................74
2.4.3 eCNSFD-110013 UE Fixed IP MultiHoming ....................................................................................76

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Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. The location information includes information about the tracking area (TA) and the eCNS where the UE is located. Summary EMM controls the access of a UE to the evolved universal terrestrial radio access network (E-UTRAN) and traces location information about the UE. it enables UEs to move in an enterprise's network.eCNS600 Feature Description 1 Basic Features 1 Basic Features 1.1 Basic Service 1..1 eCNSFD-010200 Mobility Management Applicable NEs eCNS Availability The EPS mobility management (EMM) was introduced in eCNS600 V100R001. Description EMM controls the access of a UE to the E-UTRAN and traces location information about the UE. EMM is implemented in the following procedures:  Attach  Detach  Tracking area update (TAU)  Service request  Handover  Paging  Purge Benefits As a basic feature of the eCNS. Ltd 1 .1.

. A TA list can be dynamically generated or statically configured. the network initiates a paging procedure. Ltd 2 . The eCNS supports S1-based handover. This registration procedure is called network attach. The policy and charging control (PCC) rules that apply to the default EPS bearer can be predefined in the PDN GW and activated by the PDN GW itself in the attach procedure. a default EPS bearer.eCNS600 Feature Description 1 Basic Features UE states in the E-UTRAN are divided into EMM states and EPS connection management (ECM) states:  EMM states are classified into EMM-DEREGISTERED and EMM-REGISTERED. A TA list can contain one or more TAs. Generally. When the UE is in ECM-IDLE mode. a handover procedure is triggered after the E-UTRAN determines that reselection is required. d) The TAU procedure is triggered during a handover procedure. During the attach procedure.  ECM states are classified into ECM-IDLE and ECM-CONNECTED. The main EMM procedures are described as follows:  Attach A UE must register on the network before using network services. and. − The uplink signaling or data needs to be transmitted from the UE side. the basic unit of location management is TA. which provides a permanent IP connection. This triggers a UE to initiate a service request procedure as the paging response.  Handover When the UE is in the ECM-CONNECTED state. prevents a UE from frequently initiating TA update procedures.   Draft A (2013-04-09) S1 refers to the interface between the eNodeB and the eCNS. For example. When the downlink data or information is transferred in ECM-IDLE mode. A UE initiates a TAU procedure in the following scenarios:  a) The UE detects that the current TA identity does not exist in the TA identity (TAI) list on the network where the UE is registered. a service request procedure is initiated by a UE. it initiates a service request procedure in the following scenarios: − The downlink signaling or data needs to be transmitted from the network side. f) The RRC connection has failed. you can define these TAs as a TA list.  TAU In an EPS network. c) The load balancing TAU is required. Detach Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. is established. b) The access type of the UE is changed. This prevents the TAU procedure from being generated. when a UE frequently moves between several TAs. e) The periodic TAU timer has expired. Service request A service request is used to change the ECM state from ECM-IDLE to ECM-CONNECTED and to establish radio and S1-U bearers during the transfer of uplink and downlink data.

"Mobile radio interface Layer 3 specification. in a known area.1. Ltd 3 . the network side performs implicit detach to a UE when it determines that the UE is unreachable. The detach procedure is classified into three types: − Detach procedure initiated by a UE − Detach procedure initiated by an eCNS After the detach procedure is complete. and the originating party informs the other party of this event.  Purge After removing the subscription data and MM context of a detached UE.413. A UE can be detached explicitly or implicitly. such as GUTI or IMSI.Stage 3"  3GPP TS 25. − A UE is disconnected from the last PDN connection. − Explicit detach: A UE or network side requests the detach. the MME notifies the HSS of the removal through a purge procedure. "UTRAN Iu Interface RANAP Signaling"  3GPP TS 24. "General Packet Radio Service (GPRS). Stage 3"  3GPP TS 36. For example.413.301. Service description"  3GPP TS 23. Core Network protocols . After obtaining a response from the subscriber.008. Standards  3GPP TS 23.. "Evolved Universal Terrestrial Radio Access Network (E-UTRAN). "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS). "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access"  3GPP TS 24. the EPS bearer contexts of the UE are deactivated locally. − The network informs a UE that it cannot be connected to the EPS. Enhancement None Dependency This feature does not depend on other features.060. the network performs the subsequent signaling flow or data transfer.401.2 eCNSFD-010300 Security Management The security management feature can: Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. the network cannot obtain the UE location information. The network originates paging by using a certain ID of a subscriber. S1 Application Protocol (S1AP)" 1. After a UE is detached from the network.  Paging function This is the PS domain paging function. − Implicit detach: A network side detaches a UE without informing the UE.eCNS600 Feature Description 1 Basic Features The detach procedure is used in the following scenarios: − A UE is detached from the EPS service.

eCNS600
Feature Description

1 Basic Features

Identify and authenticate users.

Ensure that only legal users can access the network.

Guarantee confidentiality of user identity, user data, and signaling transfer.

The security management feature consists of the following sub-features:

Authentication

User ID confidentiality

Identity check

1.1.2.1 eCNSFD-010301 Authentication
Applicable NEs
eCNS

Availability
The EPS authentication was introduced in eCNS600 V100R001.

Summary
The authentication feature is used in subscriber identification, authentication, and
synchronization of the encryption key. This feature checks the validity of a subscriber's
service requests to ensure that only legal subscribers can use network services. The
authentication procedure is performed in association with EMM procedures.
The authentication function has two types: authentication of the network by a UE and
authentication of a UE by the network.

Benefits
As a basic feature of the eCNS, it prevents illegal users from accessing the network, and
ensures service operation profits.
Subscribers who require high security can use this function to prevent their access to
unacknowledged networks, and eliminate possible security risks.

Description
The EPS authentication is based on a USIM. An EPS authentication vector is composed of a
quartet, namely, RAND, AUTN, XRES, and KASME.

Random Challenge (RAND)
A RAND is a random value that the network provides to a UE. The length is 16 octets.

Authentication Token (AUTN)
An AUTN is used to provide the information for a UE so that the UE can use the AUTN
to authenticate the network. The length is 17 octets.

Expected Response (XRES)
An XRES is an expected response parameter of UE authentication. It is compared with
the RES or RES+RES_EXT generated by a UE to determine whether the authentication
is successful. The length ranges from 4 to 16 octets.

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eCNS600
Feature Description

1 Basic Features

Key ASME (KASME)
A KASME is a root encryption key deduced from the CK/IK and the public land mobile
network (PLMN) ID of the ASME (MME). The length is 32 octets.
Access Security Management Entity (ASME): In E-UTRAN access mode, the MME serves as an
ASME.

Figure 1-1 shows the EPS authentication procedure.
Figure 1-1 EPS authentication procedure

1. The eCNS sends the Authentication Request message to the UE to trigger the authentication
procedure. The authentication vectors, such as RAND, AUTN, and Key Set Identifier
(KSIASME) are contained in the message.
2. The UE sends the Authentication response message to the eCNS.

The UE authenticates the network based on the AUTN. If the authentication fails, the UE
returns the Authentication Failure message to the MME, indicating the cause.

If the authentication is successful, the UE calculates the RES based on the RAND and
returns the RES to the MME. The MME compares the XRES in the authentication vector
set with the returned RES. If they are consistent, the authentication succeeds. Otherwise,
the authentication fails. In this case, the MME sends the Authentication Reject message
to the UE.

If the authentication succeeds, the UE calculates and saves the KASME value for later
encryption and integrity protection.

----End
In addition to basic authentication features, the eCNS provides the feature to obtain
authentication sets in advance. The CNS can request authentication sets before all
authentication sets are used up. Therefore, the duration of the procedure for the UE to access
to the eCNS is shortened and user experience is improved.

Enhancement
None

Dependency
This feature does not depend on other features.

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eCNS600
Feature Description

1 Basic Features

Standards

3GPP TS 33.102, "3G Security; Security architecture"

3GPP TS 33.401, "3GPP System Architecture Evolution (SAE); Security architecture"

1.1.2.2 eCNSFD-010302 User Identity Confidentiality
Applicable NEs
eCNS

Availability
The EPS user identity confidentiality was introduced in eCNS600 V100R001.

Summary
The EPS user identity confidentiality is implemented through GUTI allocation. The GUTI is
used to provide a unique temporary UE identity in the EPS network. This identity does not
reveal the permanent UE identity on the LTE-Uu interface.

Benefits
As a basic feature of the eCNS, user identity confidentiality prevents the IMSIs of UEs from
being stolen, improving network security.

Description
A GUTI consists of the following parts:

GUMMEI: A GUMMEI consists of a mobile country code (MCC), a mobile network
code (MNC), and an eCNS identity.

M-TMSI: A 32-bit M-TMSI uniquely identifies a UE in an eCNS.

The GUTI can be implicitly allocated in the attach or TAU procedure or explicitly allocated in
the GUTI reallocation procedure.

Enhancement
None

Dependency
This feature does not depend on other features.

Standards

3GPP TS 24.301, "Non-Access-Stratum (NAS) protocol for Evolved Packet System
(EPS); Stage 3"

3GPP TS 24.008, "Mobile radio interface Layer 3 specification; Core Network protocols
- Stage 3"

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eCNS600
Feature Description

1 Basic Features

1.1.2.3 eCNSFD-010304 Identity Check
Applicable NEs
eCNS

Availability
The EPS identity check was introduced in eCNS600 V100R001.

Summary
The network requests different user identities, such as IMSI and IMEI, to check the real
identity of a UE.

Benefits
This is a basic feature of the eCNS.

Description
When a UE attaches to the network using a GUTI, to obtain the real identity of the UE, the
network sends the UE an Identity Request for IMSI, IMEI, or IMEISV. Then the UE returns
an Identity Response to notify the network of its identity.
After obtaining the real identity of the UE, the network checks the user identity with the
HLR/HSS or EIR. For details, see section 1.1.2.1 eCNSFD-010301 Authentication.

Enhancement
None

Dependency
This feature does not depend on other features.

Standards

3GPP TS 24.301, "Non-Access-Stratum (NAS) protocol for Evolved Packet System
(EPS); Stage 3"

3GPP TS 24.008, "Mobile radio interface Layer 3 specification; Core Network protocols
- Stage 3"

1.1.3 eCNSFD-010400 Path Management
Applicable NEs
eCNS

Availability
This feature was introduced in eCNS600 V100R001.

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If no signaling or data is sent or received on a path for a long period.1.060.4 eCNSFD-010500 IP Address Allocation from Local Address Pool Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Standards  3GPP TS 29. the eCNS may deactivate all PDP/EPS bearer contexts related to the path so that data packets are no longer along this path. Ltd 8 . the eCNS determines that the path is invalid and clears the path. Description A GTP path is determined by a quaternary.eCNS600 Feature Description 1 Basic Features Summary The system can manage the paths by using path detection messages. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co..60. peer IP address. local IP address. "GPRS Tunneling Protocol (GTPv1) across the Gn and Gp interface"  3GPP TS 09. The eCNS can send the path management message on all paths in use. and peer port. "GPRS Tunneling Protocol (GTPv0) across the Gn and Gp interface" 1. local port. Enhancement None Dependency This feature does not depend on other features. The path management feature is used to detect whether the peer GTP Entity is available. The path management messages are usually sent and received between the GTP entities. and clear invalid paths. When a path is detected as faulty. namely. Benefits The communication between devices can be ensured. Summary The eCNS allocates IPv4 addresses to UEs from its local address pool.

the eCNS allocates IP addresses to UEs from its integrated subscriber data module. Note that dynamic IP addresses are carried in access response messages sent by the RADIUS server. Ltd 9 . A PDN Address Allocation IE is specified during the setup of a default bearer for the UE. Description A UE must obtain at least one IP address before it is able to access PS services.eCNS600 Feature Description 1 Basic Features Benefits This feature provides an enhancement to eCNSFD-110004 Static IP Address Allocation and enables the eCNS to automatically create routes to UEs. This mode is applicable to enterprise customers or internet service providers (ISPs) who manage the RADIUS server and plan IP addresses for their internal users. which requires complex configurations. the eCNS allocates dynamic IP addresses obtained from the RADIUS server during UE authentication in the bearer activation procedure.. 3GPP TS 23. Enhancement None Dependency This feature does not depend on other features. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 1. Static allocation is an optional feature and is under license control. The local address pool contains the IP addresses planned by the enterprise customer.401. Standards 3GPP TS 23.  Static IP address allocation In this mode.5 eCNSFD-010600 Integrated Subscriber Data Management Applicable NEs eCNS Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. In addition. this IE indicates the method the UE expects to use to obtain an IP address. This mode is a pure static IP address allocation mode.1. the eCNS allocates a dynamic IP address to a UE from the local address pool during the activation of a bearer for the UE. This IE contains protocol information (including an IP address field) the UE must obtain before it is able to access an external PDN. This module matches the IMSI of each UE to an IP address range planned by the enterprise customer.  IP address allocation from the RADIUS server In this mode.401 defines three modes of allocating IP addresses to UEs:  IP address allocation from the local address pool In this mode.

− Deregisters a subscriber The eCNS disables services for a subscriber and removes the information about this subscriber. Ltd 10 . or UMTS-HSS. independent service management. The eCNS manages subscriber data as follows: − Defines a USIM card The eCNS accepts the input of the information about a USIM card. Benefits This feature meets the requirements of the enterprise customer for higher space utilization. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Summary The eCNS implements the subscriber data management function. The eCNS can substitute for an LTE-HSS. − Defines a subscriber The eCNS enables services for a subscriber and allocates a phone number to the subscriber. the eCNS has the following unique characteristics in terms of subscriber data management:  Integrated subscriber data management interface The eCNS does not need to provide a standard S6a interface.. simple service delivery system. For enterprise customers. the eCNS does not interconnect with their service delivery systems. the eCNS delivers services using MML commands. GSM-HSS. Description Compared with the HSS. low power consumption. and capability to terminate LTE local services.  Differentiated service delivery system For end users. − Manages EPS QoS templates The eCNS allows the enterprise customer to create EPS QoS templates and set default QoS parameters.eCNS600 Feature Description 1 Basic Features Availability This feature was introduced in eCNS600 V100R001. − Allows the query of static subscriber information The eCNS allows the query of static subscriber information.  Differentiated subscriber data management The eCNS stores and manages subscriber data and simplifies data templates. which is generally provided by the home subscriber server (HSS) in an EPC. but not an IMS-HSS. − Cancels a USIM card The eCNS removes the information about a USIM card. including subscribed services and locking status. − Manages APN templates The eCNS allows the enterprise customer to create access point name (APN) templates.

 Draft A (2013-04-09) EPS bearer context modification Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. The ESM involves the following procedures:  Default EPS bearer context activation This procedure is used to set up a default EPS bearer context between a UE and the EPC. Benefits As a basic feature of the eCNS. Description The ESM procedure can be initiated by the network or requested by a UE. "Organization of subscriber data"  3GPP TS 29. known as the PDN connection. Standards  3GPP TS 23. EPS bearers are created to meet requirements of QoS management and provide control for a bearer granularity. It can be part of the attach procedure or an independent procedure. it enables subscribers to connect to an external PDN and perform data services.  Dedicated EPS bearer context activation This procedure is used to set up the special QoS and traffic flow template (TFT) bearer contexts between a UE and the EPC. Each PDN connection consists of at least one EPS bearer..008.002.eCNS600 Feature Description 1 Basic Features − Manages PDP context templates The eCNS allows the enterprise customer to create PDP context templates. between a UE and the PDN. Through the E-UTRAN and EPC networks. "Mobile Application Part (MAP) specification" 1. the EPS provides an IP connection.6 eCNSFD-010700 Session Management Applicable NEs eCNS Availability The EPS session management (ESM) was introduced in eCNS600 V100R001. Ltd 11 . Enhancement None Dependency This feature does not depend on other features. Summary The objective of EPS session management (ESM) is to manage EPS bearers. The EPS bearer refers to the logical combination of one or more service data flows (SDFs).1.

008.060. Stage 3"  3GPP TS 36. In this procedure. the connection to the PDN is disconnected.  UE-requested PDN disconnection This procedure is used when the UE requests to be disconnected from the PDN. The UE can request or modify a specified QoS.  UE-requested EPS bearer resource modification The procedure involves the allocation and release of UE-requested EPS bearer resources. S1 Application Protocol (S1AP)"  3GPP TS 29. and not by the UE-requested PDN connection.  EPS bearer context deactivation This procedure is used to deactivate one.413. NOTE The last PDN connection can be disconnected only by the detach procedure initiated by the UE or the MME. If all the EPS bearer contexts to the PDN are deactivated. Standards  3GPP TS 23. Tunneling Protocol for Control plane (GTPv2-C). Stage 3" Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Service description"  3GPP TS 23. "General Packet Radio Service (GPRS). The release part involves releasing the EPS bearer resources related to a specified SDF on request from the UE. Core Network protocols .060.413. NOTE The UE-initiated detach procedure is used to release all bearers. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access"  3GPP TS 24. It can also initiate the guaranteed bit rate (GBR) request or change the existing GBR. Ltd 12 .274. "GPRS Tunneling Protocol (GTPv1) across the Gn and Gp interface"  3GPP TS 24. related to the PDN are released. including the default bearer context. "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS). or all the EPS bearer contexts to the PDN.401.eCNS600 Feature Description 1 Basic Features This procedure is used to modify the QoS and TFT of the EPS bearer context. Enhancement None Dependency This feature does not depend on other features. "Evolved General Packet Radio Service (GPRS). "UTRAN Iu Interface RANAP Signaling"  3GPP TS 29.Stage 3"  3GPP TS 25.301. The allocation part involves allocating EPS bearer resources to new SDFs on request from the UE. all the EPS bearer contexts. several.. "Mobile radio interface Layer 3 specification. "Evolved Universal Terrestrial Radio Access Network (E-UTRAN).

3.1. 1.eCNS600 Feature Description 1 Basic Features 1. Enhancement None Dependency This feature does not depend on other features. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 1. Standards 3GPP TS 23. see section 1. QCI.3. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. it guarantees the end-to-end QoS in the EPS network.2.1. EPS QoS parameters contain uplink/downlink GBR. Description EPS QoS parameters are included in the EPS bearer context.. and UE-AMBR.1 eCNSFD-030101 EPS QoS Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001.2.1 eCNSFD-040101 Static Routes and Default Routes.2. see section 1.401.1 eCNSFD-030100 QoS and Traffic Management For details.3 IP Network Management 1.1 eCNSFD-030101 EPS QoS.1 eCNSFD-040100 Routing For details. Benefits As a basic feature of the eCNS. uplink/downlink maximum bit rate (MBR). allocation/retention priority (ARP).2 User Plane 1. Ltd 13 .1. Summary The eCNS supports EPS QoS control at the bearer level. APN-AMBR.

Before the eCNS sends signaling. Default routes can be manually configured by network administrators or generated using dynamic routing protocols such as Open Shortest Path First (OSPF) and Intermediate System to Intermediate System (IS-IS). Benefits This feature provides multiple route options for the enterprise customer. they work in load sharing mode. The eCNS uses static routes to communicate with a network or equipment. Together with other routes. which are manually configured by network administrators. Default routes are special routes and can also be manually configured. the associated static routes are added back to the routing table. Only authorized network administrators are allowed to modify the routing table. eNodeBs. Specifically. default routes ensure that packets are forwarded when no matched entries are found in the routing table. it searches the routing table for a next-hop router or an interface by the specified destination address and subnet mask. they work in route backup mode. Detection Bidirectional forwarding detection (BFD) is used to check the next hop of one or more static routes. and PDNs. If they are assigned different priorities. When the next hop becomes reachable. Summary The eCNS. The eCNS use static routes to communicate with OM networks. Description Static routes apply to networks with simple architectures and static network topologies. Ltd 14 .1 eCNSFD-040101 Static Routes and Default Routes Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Multiple static routes can be configured for the same destination address. If these routes are assigned the same priority. If BFD detects that the next hop is unreachable. Static routes help implement security policies. the configured static routes are added to a routing table. implements routing using static routes. together with routers. or OM packets. The configuration for default routes is simple and robust. Application Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. user data.eCNS600 Feature Description 1 Basic Features 1.1. the associated static routes are removed from the routing table.3. Implementation Static routes are added to the routing table after being configured by network administrators.. Default routes are used only when no matched entries are found in the routing table.

. The eCNS supports NTPv3 and serves as an NTP client. Interaction with Other Features Table 1-1 Interaction with other features Related Feature Interaction eCNSFD-110007 Bidirectional Forwarding Detection (BFD) Static routes do not have self-healing capabilities and require intervention from the network administrators when faults occur. If BFD is enabled. Summary The Network Time Protocol (NTP) is used to synchronize the time across the entire network. Enhancement None Dependency Application Limitations When the network is faulty or the network topology is changed. "Internet Protocol"  RFC 1155. static routes can be configured to ensure that the network works properly.2 eCNSFD-040200 NTP Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Correct static route settings provide network security and save bandwidth resources for important applications. the route management system can check the BFD session status to determine whether the IPv4 static routes in the public network are reachable. Ltd 15 . The eCNS periodically obtains the standard time from an NTP server located on a PS network and adjusts the system time based Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.3. Default routes can meet the requirements for simultaneous communication by a large number of users.eCNS600 Feature Description 1 Basic Features In a network with a simple structure. "Structure and Identification of Management Information for TCP/IP-based Internets" 1. Default routes are used to reduce the time for selecting routes and the bandwidth for forwarding packets. Standards  RFC 791. the static routes become unavailable and must be reconfigured by network administrators.

Description The NTP protocol is a TCP/IP protocol that is used to synchronize time on all devices across the network.3. The eCNS periodically obtains the standard time from an NTP server or OMC server and adjusts the time across the entire network based on this standard time. Summary A virtual local area network (VLAN) is a logical network comprising multiple physical network devices. Standards RFC 1305. the time on the network needs to be synchronized with the external standard time.3 eCNSFD-040300 VLAN Supporting Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. NTP is based on the UDP protocol. "Network Time Protocol" 1. To prevent time deviation. RFC 1305 stipulates the complex algorithm used by NTP to guarantee accuracy of time synchronization.eCNS600 Feature Description 1 Basic Features on this standard time. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Ltd 16 . Enhancement None Dependency This feature does not depend on other features. A VLAN forms a broadcast domain. Benefits The NTP protocol ensures the time consistency of all NEs on a network. The eCNS supports connecting to a remote NTP server in client mode. and guarantees the accuracy and consistency of functions such as performance measurement. If VLANs are implemented based on layer 3 networking. Different VLANs communicate with each other through routes.. The eCNS implements VLAN functions by setting VLAN IDs on sub-interfaces. sub-interfaces are configured on Ethernet ports or trunks and defined as the members of VLANs to distinguish users or services.

the layer-2 or layer-3 device that is directly connected to the eCNS must also be configured with the same VLAN ID.. Interaction with Other Features Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. the relevant ports on the eCNS must be divided into sub-interfaces. These sub-interfaces must also be assigned to the corresponding VLANs. This helps control network traffic. Description The eCNS provides the following VLAN functions:  Isolates traffic When the eCNS uses a set of switching equipment to construct a LAN. switches. these ports can be divided into sub-interfaces and VLAN IDs can be configured on these ports. 01 eCNS600 V100R001 First official release.  Increases the number of available interfaces If the ports on the eCNS are insufficient for connecting to the routers. Traffic can be isolated by adding interfaces to different VLANs. Ltd 17 . or firewalls. or firewalls that are directly connected to the eCNS are assigned to different VLANs. and improve network security and reliability. eCNSFD-040 300.  Adapts to the peer If the routers. Enhancement Table 1-2 Release history and enhancement Feature Version Product Version Details eCNSFD-040 300. and firewalls that are directly connected to the eCNS also support VLAN functions. Dependency Application Limitations This feature is applicable only when the routers. 02 eCNS600 V100R002 Added the function of binding VLANs and sub-interfaces. reduce equipment investments. The eCNS can also assign the interfaces between PDNs to different VLANs to isolate users. switches. simplify network management. If a sub-interface on the eCNS is configured with a VLAN ID.eCNS600 Feature Description 1 Basic Features Benefits Broadcast traffic and unicast traffic in a VLAN are not forwarded to other VLANs. switches. it can assign the interfaces between NEs to different VLANs to implement traffic isolation.

Multiple Ethernet physical interfaces can be bound into a logical interface that is known as an Eth-trunk interface.  Improved reliability. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. In this case. or two routers. The trunk link can be regarded as a point-to-point direct link. The advantages of the Trunk technology are as follows:  Increased bandwidth. or one switch and one router. Load sharing can be achieved among member interfaces of the Trunk interface. which improves network reliability. The trunk interface prevents network congestion by distributing the traffic among different links. The destination of the traffic remains unchanged. The total bandwidth of the Trunk interface is the sum of the bandwidth of each member interface. the bandwidth of the trunk interface is multiplied. The two ends of a trunk link can be two switches. Ltd 18 . 1. the reliability of the entire Trunk link is improved. Benefits This feature increases the bandwidth. traffic is switched to other available links connected to the member interface. Summary Eth-trunk supports traffic load sharing between multiple Ethernet interfaces. and ensures load sharing..4 eCNSFD-040500 Eth-Trunk Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001.eCNS600 Feature Description 1 Basic Features Table 1-3 Interaction with other features Related Feature Interaction eCNSFD-040100 Routing Route information must be configured on the eCNS. Description Trunk is a bundling technology.3. packets cannot be forwarded between VLANs. Therefore. Network congestion occurs when all the traffic is transmitted over a single link. improves the reliability of networking. Otherwise. When one physical link connected to the member interface is faulty. Physical interfaces that are bound are called member interfaces.  Load sharing support.

OSPF is a link-state-based IGP developed by Internet Engineering Task Force (IETF). OSPF has the following characteristics:  Draft A (2013-04-09) Fast convergence: OSPF sends link state update packets within the autonomous system (AS) immediately after detecting changes in the network topology. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Ltd 19 .eCNS600 Feature Description 1 Basic Features Dependency Table 1-4 Interaction with other features Feature Interaction eCNSFD-040700 VRF Eth-Trunk supports to be joined in VRF。 eCNSFD-040600 OSPFv2 eCNS and PE device can learn dynamic routes by Eth-Trunk through OSPF route protocol.. It supports networks in different scales and allows hundreds of routers deployed in a network. at same time it raised up the reliability of transmission because of the mesh network.5 eCNSFD-040600 OSPFv2 Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002. The eCNS uses OSPF Version 2 (OSPFv2) on the SGi interface to exchange routing information with peer equipment and implement network topology sharing. OSPF is more applicable to large complex networks. Summary Open Shortest Path First (OSPF) is an Interior Gateway Protocol (IGP) based on link states.3. Benefits This feature enables data packet routing over the SGi interface between an EPC and an external data network and allows flexible networking based on the customer requirements. Description The eCNS supports OSPFv2. Standards IEEE 802.3AD Amendment to carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications-aggregation of multiple link segments 1.

Interaction with Other Features Table 1-5 Interaction with other features Feature Interaction eCNSFD-110007 Bidirectional Forwarding Detection (BFD) BFD increases the OSPF convergence rate by rapidly detecting link faults between neighboring routers. Each router gathers its link state information and broadcasts it within the entire AS using a flooding algorithm so that the AS can maintain one link state database. In descending order of priorities. eCNSFD-040100 Routing The routing feature uses routing policies to control issue. OSPF uses abstract routing information between areas to reduce the network bandwidth usage. "Internet Protocol" Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 1 Basic Features  Loop-free routing: OSPF computes the shortest path tree for each route based on link states by using a shortest path first algorithm that can ensure loop-free routing.  Support of packet multicast Routers in the AS use OSPF to process routing tables.. and reference of OSPF routing information. each router computes its shortest path tree with the router itself being the root and other routers being leafs. border gateway protocols such as BGP-4 need to be used. The eCNS uses OSPFv2 only on the SGi interface. eCNSFD-040700 VRF VRF isolates routes through VRF-route binding and forwards data based on routing tables and virtual private network (VPN) IDs. Enhancement None Dependency Application Limitations OSPFv2 is an IGP and can be used only within an AS. Based on this database.  Area-based administration: OSPF allows the AS to be divided into routing areas for administration. external type 1. these types are intra-area.  Route hierarchy: OSPF divides routes into four types. and external type 2.  Support of packet authentication: OSPF performs interface-based packet authentication to ensure the security of route computing. inter-area. For routing between different ASs. reception. Standards  Draft A (2013-04-09) RFC 791. Ltd 20 . eCNSFD-040500 Eth-Trunk eCNS and PE device can learn dynamic routes by Eth-Trunk through OSPF route protocol.  Support of equal-cost routes: OSPF supports multiple equal-cost routes to the same destination address.

Ltd 21 . Through traffic separation and network division. In addition. and the traffic of the signaling plane. the APN resources of a VPN will not be used by other VPNs or subscribers of other VPNs on the network.6 eCNSFD-040700 VRF Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002. "OSPF specification"  RFC 1247. It is also used to logically define a physical device. Benefits This feature facilitates connections between the eCNS and intranets because the address spaces of APNs of carriers' private networks can be reused. logical interfaces. A eCNS can be logically divided into multiple virtual eCNS through VRF.eCNS600 Feature Description 1 Basic Features  RFC 1155. APN traffic can be separated to ensure network security. Summary Virtual routing and forwarding (VRF) is a means of implementing the virtual private network (VPN) function. Therefore.3. "OSPF Version 2" 1. eCNS supports VRF. Description A VPN keeps the transferred data private from other VPNs. user plane. traffic of different services can be separated. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. the information in the VPN is secure. and routes to VRF. Service application: By binding APNs to VRF. Networking application: The problem of insufficient IP addresses can be solved by binding physical interfaces (or Eth-trunk interfaces or sub-interfaces). VPN instances can be created on the eCNS to implement VRF. which conserves public IP addresses. and operation and maintenance (OM) data can be separated. "Structure and Identification of Management Information for TCP/IP-based Internets"  RFC 1131. It enables the functions of multiple virtual routing devices to be implemented on a single routing device.. Each virtual eCNS works independently as a eCNS and has its own routing table and interface for data forwarding. Interfaces of different VPN instances can use the same IP address. you can bind each APN to a separate VPN to divide the traffic of different APNs. Each VRF has a separate routing table and address space. and the functions of multiple logically separated virtual eCNS can be implemented on one eCNS device. By taking advantage of this feature on the eCNS. multiple virtual routing areas are available on one eCNS to realize the separation of addresses and routes among APNs.

Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Summary This feature enables the eCNS to directly forward packets between UEs connected to this eCNS. Ltd 22 .eCNS600 Feature Description 1 Basic Features Resource application: By binding address pools to VRF. eCNSFD-040600 OSPFv2 One VRF support more than OSPF process..7 eCNSFD-040800 Local Routing Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002. "IP Based Virtual Private Networks" 1. address resources can be reused. BFD should be activated in VRF in order that eCNS could switch route when old route is fault. eCNSFD-110007 Bidirectional Forwarding Detection(BFD) In the network scenario of dual active ports with static routes. while one OSPF process belongs to only one VRF. eCNSFD-040500 Eth-Trunk Eth-Trunk supports to be joined in VRF。 eCNSFD-110010 Routing Behind MS Different UEs which support “Routing Behind MS” can be separated by different VRFs。 Standards RFC 2764. Enhancement None Dependency Table 1-6 Interaction with other features Feature Interaction eCNSFD-040900 SGi Redirection VRF does not take effect if SGi redirection is enabled.3.

the eCNS directly forwards the packet to the target UE. the eCNS checks the target UE.. Figure 1-2 Local routing Enhancement None Dependency Table 1-7 Interaction with other features Feature Interaction eCNSFD-040900 SGi Redirection Local routing does not take effect if SGi redirection is enabled. Description After the eCNS receives an uplink packet from a UE.8 eCNSFD-040900 SGi Redirection Applicable NEs eCNS Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Standards None 1. Ltd 23 . If the eCNS has admitted the target UE. as shown in Figure 1-2.3.eCNS600 Feature Description 1 Basic Features Benefits This feature does not require additional network equipment on the SGi interface for packet forwarding between UEs and therefore reduces end-to-end forwarding delay.

uplink packets from UEs are not filtered by the firewall. In this situation. a firewall) in the PDN. Uplink packets of UE 1 are sent through physical port a to the firewall. The blue line in this figure represents the direction of redirected packets. Instead. Ltd 24 . the packets are directly forwarded by the eCNS. Instead. as shown in Figure 1-4. After being filtered by the firewall. Figure 1-3 Packet forwarding when SGi redirection is enabled If SGi redirection is disabled. Description Most firewalls do not support bidirectional packet transmissions through an interface. Summary This feature prohibits the eCNS from directly forwarding packets between UEs. Therefore. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.. the configurations as shown in Figure 1-3 are required for SGi redirection. packet security cannot be ensured. this feature redirects uplink packets through the SGi interface to a specified device (for example.eCNS600 Feature Description 1 Basic Features Availability This feature is introduced in eCNS600 V100R002. Benefits This feature protects enterprise customers' networks and ensures end users' communication security. the packets are sent through physical port b to the eCNS.

eCNSFD-040700 VRF VRF does not take effect if SGi redirection is enabled. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Ltd 25 ..1 eCNSFD-050200 Board Redundant Backup Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001.4. Standards None 1.4 Reliability 1.eCNS600 Feature Description 1 Basic Features Figure 1-4 Packet forwarding when SGi redirection is disabled Enhancement None Dependency Table 1-8 Interaction with other features Feature Interaction eCNSFD-040800 Local Routing Local routing does not take effect if SGi redirection is enabled.

such as switchover and reset.1 eCNSFD-060100 Software Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001.. the system can automatically detect the fault by using a certain method without user intervention.eCNS600 Feature Description 1 Basic Features Summary The eCNS performs 1+1 backup for all the processes. the standby process takes over the service. Self-healing means after a fault occurs. Automatic fault detection means when the system is faulty because of a software abnormality or hardware fault. Ltd 26 . automatic fault detection. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Process redundancy backup. Standards None 1. Description Process redundancy backup provides a backup mechanism for all the processes in the system. That is. and self-healing function guarantee the system reliability.5 Operation and Maintenance 1. Enhancement None Dependency This feature does not depend on other features. the system can take some measures. Benefits As a basic feature of the eCNS. all the processes work in the active/standby mode. A standby process can back up the data periodically or when the backing up process is triggered by an event. it guarantees the system reliability. The redundancy backup ensures that the system is not impacted by any faulty process.5. If the active process is faulty. This is the basis for fault isolation and fault recovery. to rectify the fault without affecting the normal operations of the system.

it can provide network data for network operating. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. That is. and management of communication networks. and management. Ltd 27 .. operation.5.2 eCNSFD-060300 Performance Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. and activation. software upgrade.eCNS600 Feature Description 1 Basic Features Summary Software management is used to achieve software management of the eCNS. the time spent in loading the software is greatly reduced. all the processes in the eCNS can load the software at the same time. including software installation and loading in addition to patch installation. As a result. The eCNS supports software concurrent upgrade. Summary The eCNS can measure network performances to provide the performance measurement data. planning. Enhancement None Dependency This feature does not depend on other features. Benefits As a basic feature of the eCNS. loading. Description Software management mainly includes software installation. Standards None 1. it can flexibly manage the running software. Benefits As a basic feature of the eCNS. design. Patches can correct software faults without service interruption. online patching. Performance measurement data is an important basis for measurement.

The eCNS reports all the measurement results at a specified period. the threshold alarms of the average CPU usage are as follows: − Critical: > 90 − Major: > 80 − Minor: > 70 − Warning: > 50 When the value of average CPU usage reaches 75. In this case. analyze. which means that users do not need to configure measurement tasks. Ltd 28 . the indexes correspond to different measurement units. The performance alarms are categorized into threshold alarms and terrace alarms. The calculation formula of the change rate is as follows: (Measured data of this period-Measured data of last period)/Measured data of last period If the terrace of the measurement index exceeds the preset terrace threshold. S1 mode EMM and ESM. the terrace value is 50%.. reflecting the change rate of the measurement index. For example. The eCNS reports all measurement data to the operation and maintenance (OMS). The unit of the value is percentage. GTP-U. The system compares the measured data with this threshold. collect. The unit of the threshold must be the same as the unit of the index. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. The measurement clusters provided by the eCNS include charging GTP-C. the system generates the performance alarm. The system compares the change rate of the measured data to this value. namely. and warning. critical. You can set the direction (greater or smaller than a value) and the value of each alarm severity. there are four alarm severities. The eCNS generates performance alarms when the values of measurement indexes exceed preset thresholds or terraces. Users can filter. minor. and print the measurement data by using the OMS. the terrace alarms of the average CPU usage are as follows: − Critical: > 70% − Major: > 50% − Minor: > 30% − Warning: > 10% If two consecutive values of the average CPU usage are 30% and 20% respectively. major. the system generates a minor performance alarm and reports the alarm in the Browse Alarm window to notify maintenance personnel. For example.  Threshold Alarm A threshold refers to a preset limit. For each measurement index. and the measurement units correspond to different measurement clusters. To simplify the management of these indexes.eCNS600 Feature Description 1 Basic Features Description The eCNS provides various test indexes.  Terrace Alarm A terrace refers to the change degree of two values. the system generates a Minor performance alarm and reports the alarm to the Browse Alarm window to notify maintenance personnel. query.

5.eCNS600 Feature Description 1 Basic Features Enhancement None Dependency This feature does not depend on other features. and external environment to ensure that faults can be immediately detected and handled. To simplify management.426.403. The eCNS notifies maintenance personnel of faults and events through alarms. "Telecommunication management. Performance measurements . Performance measurements Evolved Packet Core (EPC) network" 1. "Performance data measurements"  3GPP TS 32. hardware parts. Summary The fault management feature is used to monitor system operations.. these alarms are assigned different severities.04. Ltd 29 . Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Standards  3GPP TS 12. The eCNS alarms are classified into the following severities:  Critical  Major  Minor  Warning You can adjust the alarm severities based on certain requirements.3 eCNSFD-060400 Fault Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Benefits As a basic feature of the eCNS. it provides detailed alarm information to help maintenance personnel easily locate and handle faults. Description The eCNS generates various types of alarms that cover faults and events related to software functions. Performance Management (PM). "Telecommunication management. Performance Management (PM).UMTS and combined UMTS/GSM"  3GPP TS 32.

Maintenance personnel can shield alarms that they consider as unimportant. Summary Equipment management includes operations such as monitoring. Benefits As a basic feature of the eCNS. The results returned help in analysis and location of faults. Enhancement None Dependency This feature does not depend on other features.5. and testing. controlling. The alarm tool uses different colors and windows to differentiate the alarms of different severities. so that users can focus on alarms of high severity first. Description The equipment management feature helps in monitoring. Figure 1-5 and Figure 1-6 show the front view and rear view of a subrack. it also provides a graphical query interface.  Status monitoring The eCNS provides MML commands for querying status of devices. control.eCNS600 Feature Description 1 Basic Features When an alarm occurs. Ltd 30 . and alarm type.4 eCNSFD-060500 Equipment Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. the system reports the detailed information about the alarm so that maintenance personnel can locate and handle the fault. Alarms can be queried by specifying a combination of criteria such as the time range. For boards and ports.. and testing the functions of entities such as system hardware and links. alarm severity. Standards None 1. it helps maintenance personnel in knowing the operations of the system so that they can flexibly maintain and manage the system. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.

eCNS600 Feature Description 1 Basic Features Figure 1-5 Front view Figure 1-6 Rear view Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.. Ltd 31 .

 Device test The device test is an important method for finding and locating problems. Ltd 32 . reset.Systems Management 1. Standards CCITT X.eCNS600 Feature Description 1 Basic Features  Device control Device control includes operations such as switchover.  Static data configuration means editing the data script file (MML. block. and logical entities (such as signaling point). and disable. Enhancement None Dependency This feature does not depend on other features. it helps engineers configure and manage parameters for system operation to make the system work properly. The eCNS provides tests such as link self-loop test and path connectivity test.Open Systems Interconnection .5 eCNSFD-060600 Configuration Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Configuration management also provides backup or export configuration data. Description The eCNS provides both dynamic and static modes for data configuration:  Dynamic data configuration means directly modifying system data without interrupting the operation of the system.. link. The monitored objects are board. Benefits As a basic feature of the eCNS. process.5. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. modifying. Modification of the file takes effect after the system resets. Summary Configuration management includes operations such as adding.TXT) offline.731 Information Technology . deleting. port. and querying of system data.

and ensures system security. The system administrator can add or delete operator accounts as required. password policy. operation period control.5. password policy. You can manage the rights of each account by assigning the account with the execution rights of a specified command set. ACL. and then users in different user groups can be assigned different rights. account validity control. For convenient management. the operator must have a valid account. account validity control. account rights are defined in user groups. Summary The security management provided by the eCNS ensures that only authorized users can perform operations on the system.. and operation log. It prevents unauthorized operators from performing operations intentionally or unintentionally. Standards None 1. right management.eCNS600 Feature Description 1 Basic Features Enhancement None Dependency This feature does not depend on other features. right management. and operation log. account lockout policy. account lockout policy. All accounts are managed by the system administrator. the system provides four user groups: Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Ltd 33 . By default.  Account Management To maintain the eCNS. access control list (ACL). Description Security management includes account management. A user group is a collection of users who share the same rights. Benefits Only authorized operators can perform authorized operations on legal terminals.6 eCNSFD-060700 Security Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Security management includes account management. operation period control. and guarantees system security.  Rights Management The eCNS classifies commands to different command sets.

 ACL Generally. maintain the system. If the number of failures to log in using an account exceeds the threshold. the system rejects login requests from this account. Ltd 34 . During a specified period. You can check the operation log on the LMT and trace suspicious operations.  Operation Period Control You can control the time period for which users log in and operate the OMU. Otherwise.. users cannot log in and operate the OMU. If the current time is not in the specified time period. − Users: Users in this group can check the data and maintain the system. the OMU does not restrict the IP address of the client that a user uses. − Guests: Users in this group can only check the data. − Operators: Users in this group can check the data. commands that the user runs. and result of the command. and can assign special rights to a user account. IP address. After the ACL function is enabled. the system locks out the account. Standards None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. The eCNS can customize the password policy as follows:  − Specify the validity period of a password − Specify the password length − Specify the characters that can be used in a password Operation Log An operation log records all the operation information about a user. When a user account is invalid.  Account Validity Control The administrator can change the account validity by modifying the user attributes. the IP address of the client that the user uses to log in to the OMU must be contained in the ACL. and configure the data. the user cannot log in to the OMU server. The account lockout policy can prevent malicious hackers from logging in and misusing the data. Enhancement None Dependency This feature does not depend on other features. The administrator can assign rights to users by assigning users to different user groups. user number. time when the command is run.eCNS600 Feature Description 1 Basic Features − Administrators: There is only one administrator account in a system.  Password Policy The complexity and regular modification of passwords guarantee system security. the login fails. including user name.  Account Lockout Policy You can set a threshold for the number of login failures.

notes. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Ltd 35 . and example of each MML command. Description The contents of the online help are as follows:  Interface online help It describes the meanings of the LMT user interfaces and how to use maintenance functions and alarm management functions. An online help provides the following functions:  It is organized based on common tasks performed by users.  It also provides powerful index function.  MML command online help It is used to explain each MML command and help users correctly use these commands. so you can obtain relevant information by pressing F1 to activate the help you want to query. measurement object.. parameter description. You can obtain the information about a task through the navigation tree. it guides an operator to use and maintain the system. Summary Each version of the eCNS has its own online help.eCNS600 Feature Description 1 Basic Features 1. and unit of each measurement index. choose Help > Help Topics to display the online help. and provides alarm descriptions and suggestions for handling alarms.7 eCNSFD-060800 Online Documentation Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Benefits As a basic feature of the eCNS.  Alarm help It describes each alarm and provides suggestions to handle alarms. In the client window. so you can obtain help information by typing a key word.  MML help It describes the function.  Performance index help It describes the meaning. which contains:  O&M system online help It is used to help users correctly use relevant interfaces and different management functions. triggering point.  It provides the detailed description of all operations supported by the system. Operation help is associated with certain interfaces.5.

and resolution of tracing messages processed by the interfaces of eCNS. The tracing feature is used in the daily maintenance of a device. Benefits This feature guarantees flexibility in locating and solving problems for enterprise customers. and interface tracing. The tracing functions can be used to store.eCNS600 Feature Description 1 Basic Features There are several ways to trigger the online help:  Press F1 to invoke the interface online help. Description The eCNS provides subscriber signaling and data tracing based on the IMSI or MSISDN. Interface tracing involves establishment.  Choose Help > Help theme to display all online helps. The eCNS supports the following types of message filters:  MM messages of the S1 interface: NAS_MM and GTP_C  SM messages of the S1 interface: NAS_SM and GTP_C  S1-AP message of the S1 interface: S1-AP Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.  The alarm help is automatically triggered when you check the alarm. and locate faults. and review a tracing file. Enhancement None Dependency This feature does not depend on other features.  The MML help is automatically triggered after a command is selected or entered. group tracing.8 eCNSFD-060900 Tracing Function Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001.5. resolve. After a device is configured for data. Ltd 36 . This feature can locate where a fault occurs in the service procedure through message tracing. capture. Summary Tracing can be classified into subscriber tracing.. Standards None 1. the device can validate whether signaling links run normally by setting up tracing.

.eCNS600 Feature Description 1 Basic Features The eCNS can create subscriber tracing for a UE that does not attach to the network. all the signaling and user data can be captured. When browsing messages online. The tracing messages can be saved in following format:  Trace message file (*. as shown in Figure 1-7.  Protocol text file (*. Figure 1-7 Message Browser Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.txt): It is used to save protocol explanation of messages. Ltd 37 .  CSV file (*. The OMS provides a message analyzer that can be used to view messages online.  Text file (*. Interface tracing means tracing all the messages on a certain interface. Once the UE initiates the attach procedure.txt): It is used to save the messages displayed in the tracing interface. You can double-click a certain message in the Message Browser window to query the detailed information about this message. This type of message browsing is intuitive.tmf): It is used to browse messages offline through the Trace Viewer. The LMT interface displays only part of the code flow. A window containing the detailed information and explanation of the record is displayed.csv): It is used to save the complete code flow. The eCNS allows a tracing file to be saved to the hard disk in different formats through both automatic and manual modes. Group tracing means tracing the signaling message and interface message on a certain group. you can select and double-click a record that you want to query.

as shown in Figure 1-9. Figure 1-8 Trace Viewer  Resolve messages Select and double-click a record that you want to query.. the row is highlighted in blue and the blue bar in the lower pane indicates the hexadecimal information of the selected row. If you select a row in the upper part of the window. including the directory. The tracing files that are saved on local devices can be viewed in the Trace Viewer. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 1 Basic Features NOTE The window is divided into two parts. Ltd 38 . time. A window containing the detailed information and explanation of the record is displayed. the upper pane and the lower pane. You can adjust the view by moving the bar that separates the two panes. type. The Trace Viewer can be used to perform the following operations:  View message streams Complete tracing message procedures can be viewed. as shown in Figure 1-8. and content of a message.

Standards None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. and type.eCNS600 Feature Description 1 Basic Features Figure 1-9 Message Browser NOTE The window is divided into two parts. the row is highlighted in blue and the blue bar in the lower pane indicates the hexadecimal information of the selected row. You can adjust the view by moving the bar that separates the two panes.. time. the upper pane and the lower pane. Enhancement None Dependency This feature does not depend on other features. Ltd 39 . If you select a row in the upper part of the window. direction.  Sort messages Messages can be sorted according to the serial number.

It allows log export and upload.10 eCNSFD-061100 Daylight Saving Time Applicable NEs eCNS Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. R&D personnel can locate problems and analyze system efficiency.5. OM personnel can learn the running status of the system. for example. and account authentication.  Security logs: record the security events that occur on the eCNS.  Operation logs: record the commands delivered from LMTs.5. for example. Enhancement None Dependency This feature does not depend on other features. and security logs. Summary The eCNS provides and manages run logs. debug logs.. Using the run logs. Using the debug logs. The security events include user login.eCNS600 Feature Description 1 Basic Features 1. account management.9 eCNSFD-061000 Log Management Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. OM personnel can manage OM records. Using the operation logs.  Debug logs: record the running status of system software. Ltd 40 . record system deployment status and system status changes. Description The eCNS supports the following logs:  Run logs: record the running status of system software. operation logs. Standards None 1. Benefits This feature meets the requirements of enterprise customers for log management. object status migrations and message exceptions.

Benefits This feature meets requirements for enterprise customers in different areas.6 Interface Function 1.6. The S1-MME interface is a standard interface between the eNodeB and the eCNS. Summary The S1 interface includes the S1-MME interface and the S1-U interface in LTE/SAE. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. the start time of DST. Summary The eCNS can set information about time zone and Daylight Saving Time (DST) management. Ltd 41 .. and the end time of DST.1 eCNSFD-070100 S1 Interface Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. such as time zone where the system is located.eCNS600 Feature Description 1 Basic Features Availability This feature was introduced in eCNS600 V100R001. Standards None 1. Description The eCNS can set information about time zone and DST in the following ways:  By data  By week Enhancement None Dependency This feature does not depend on other features.

Figure 1-11 shows the S1-U interface protocol stack. Benefits This feature enables the S1 interface to transmit user-plane and control-plane data.  L2/L1: The data link layer/physical layer protocol can be 10 Mbit/s.  IP: It contains IPv4 that is defined in RFC 791 and IPv6 that is defined in RFC 1883. It is used to transmit uplink and downlink user-plane data flows between the eNodeB and the eCNS. Figure 1-10 Protocol stack of the S1-MME interface The protocol layers are described as follows:  S1 Application Protocol (S1-AP): It refers to the application layer protocol between the eNodeB and the MME. Figure 1-10 shows the protocol stack of the S1-MME interface. Ltd 42 . Description The S1-MME interface is the signaling interface between the eNodeB and the eCNS.eCNS600 Feature Description 1 Basic Features The S1-U interface is a user-plane interface between the eNodeB and the eCNS. 100 Mbit/s. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.  Stream Control Transmission Protocol (SCTP): It is used to guarantee the transmission of signaling messages between the eNodeB and the MME. The S1-U interface uses the GPRS Tunneling Protocol version 1 (GTPv1). or 1000 Mbit/s Ethernet..

Standards 3GPP TS 36. Ltd 43 . It is used to transmit PS session data.eCNS600 Feature Description 1 Basic Features Figure 1-11 S1-U interface protocol stack Enhancement None Dependency This feature does not depend on other features. authorization and accounting (AAA) server.413..6. S1 Application Protocol (S1AP)" 1. or between the eCNS and the authentication. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Summary The SGi interface is an interface between eCNS and the packet data network (PDN).2 eCNSFD-070200 SGi Interface Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. "Evolved Universal Terrestrial Radio Access Network (E-UTRAN).

..3 eCNSFD-070300 S10 Interface Applicable NEs eCNS Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Benefits Enterprise customers This feature enables the eCNS to interwork with PDN devices of various vendors by using the SGi interface. Figure 1-12 SGi interface protocol stack Enhancement None Dependency This feature does not depend on other features.6. Ltd 44 ..eCNS600 Feature Description 1 Basic Features Benefits For. Subscribers Subscribers are unaware of the SGi interface feature. 1. complying with 3GPP specifications. Description SGi Interface Protocol Stack Figure 1-12 shows the SGi interface protocol stack.

Benefits The S10 interface of the eCNS complies with 3GPP specifications and therefore can connect MMEs provided by different vendors. or 1000 Mbit/s Ethernet. and L1 is the physical layer.  UDP UDP is used to transmit user data between MMEs. Figure 1-13 S10 protocol stack The protocols in the stack are as follows:  GTP-C GTP-C is used to reliably transmit signaling between MMEs. The version used is GTPv2. Summary The S10 interface is a standard interface between MMEs.. and IPv6 is defined in RFC 1883. Enhancement None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. L2 and L1 L2 is the data link layer. UDP is defined in RFC 768.  IP  IPv4 is defined in RFC 791.eCNS600 Feature Description 1 Basic Features Availability This feature is introduced in eCNS600 V100R002. Both can use 10. 100. Ltd 45 . Signaling transmitted on the S10 interface includes GTP path management messages and mobility management messages. Description Figure 1-13 shows the S10 protocol stack.

6. Summary The S5 interface is a standard interface between an S-GW and a P-GW in the same network. Ltd 46 . This interface can be used in both the control plane and user plane. Figure 1-14 S5 protocol stack using GTPv2 Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Standards 3GPP TS 29.. Tunneling Protocol for Control plane (GTPv2-C).eCNS600 Feature Description 1 Basic Features Dependency This feature does not depend on other features. Description Protocol Stack Figure 1-14 and Figure 1-15 show the S5 protocol stacks using GTPv2 and GTPv1. "Evolved General Packet Radio Service (GPRS).4 eCNSFD-070400 S5 Interface Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002.274. Stage 3" 1. Benefits The S5 interface of the eCNS complies with 3GPP specifications and therefore can connect an S-GW and a P-GW provided by different vendors. respectively.

Ltd 47 .6.. Standards 3GPP TS 23. Signaling Procedure The S5 signaling procedures are as follows:  Session setup  Bearer setup  Bearer modification  Session release  Bearer release  Bearer update Enhancement None Dependency This feature does not depend on other features.eCNS600 Feature Description 1 Basic Features Figure 1-15 S5 protocol stack using GTPv1 Application Scenario The S5 interface connects an S-GW and a P-GW in the same network. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 1.401.5 eCNSFD-070500 S8 Interface Applicable NEs eCNS Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.

eCNS600 Feature Description 1 Basic Features Availability This feature is introduced in eCNS600 V100R002. Ltd 48 . Benefits The S8 interface of the eCNS complies with 3GPP specifications and therefore can connect an S-GW and a P-GW provided by different vendors.. Description Protocol Stack Figure 1-16 and Figure 1-17 show the S8 protocol stacks using GTPv2 and GTPv1. This interface can be used in both the control plane and user plane. Summary The S8 interface is a standard interface between an S-GW and a P-GW in different networks. Figure 1-16 S8 protocol stack using GTPv2 Figure 1-17 S8 protocol stack using GTPv1 Application Scenario Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. respectively.

Ltd 49 . Standards 3GPP TS 23. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.6 eCNSFD-070600 Ga Interface Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 1. Description Figure 1-18 shows the Ga protocol stack.6. Benefits The Ga interface of the eCNS complies with 3GPP specifications and therefore can connect a P-GW and a CG provided by different vendors.401. Summary The Ga interface is a standard interface between a P-GW and a charging gateway (CG).. Signaling Procedure The S8 signaling procedures are as follows:  Session setup  Bearer setup  Bearer modification  Session release  Bearer release  Bearer update Enhancement None Dependency This feature does not depend on other features. It uses GTP'.eCNS600 Feature Description 1 Basic Features The S8 interface connects an S-GW in a visited network and a P-GW in a home network.

The Ga signaling procedures are as follows:  CDR generation  CDR delivery Enhancement None Dependency This feature does not depend on other features. Ltd 50 . Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Summary The S6a interface is a standard interface between an MME and an HSS.. Benefits The S6a interface of the eCNS complies with 3GPP specifications and therefore can connect an MME and an HSS provided by different vendors. Standards 3GPP TS 32. "Charging Data Record (CDR) transfer" 1.6.eCNS600 Feature Description 1 Basic Features Figure 1-18 Ga protocol stack GTP' is a GPRS protocol used for CDR transfer.295.7 eCNSFD-070700 S6a Interface Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002.

Both can use 10. Figure 1-19 S6a protocol stack The protocols in the stack are as follows:  Diameter Diameter is used to transmit subscription and authentication data between an MME and an HSS. Ltd 51 .. Enhancement None Dependency This feature does not depend on other features. "Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol"  RFC3588.272. Standards  3GPP TS 29. Diameter is defined in RFC 3588. "Diameter Base Protocol" Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.  IP IPv4 is defined in RFC 791. and L1 is the physical layer.  L2 and L1 L2 is the data link layer.  SCTP SCTP is used to transmit signaling between an MME and an HSS.eCNS600 Feature Description 1 Basic Features Description Figure 1-19 shows the S6a protocol stack. and IPv6 is defined in RFC 1883. 100. or 1000 Mbit/s Ethernet.

7. and kernel parameters  OS logs  Interconnection security data Benefits This feature enhances system robustness and security. the hackers tamper with important files and data. or configuration defects.1 eCNSFD-080300 Linux Security Hardening Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Ltd 52 . leading to issues such as network service interruption. An OS with vulnerabilities is open to attacks from hackers and viruses. Summary This feature hardens Linux operating system (OS) security and protects against attacks without interruptions to ongoing services. OS Security Threats and Vulnerability Causes The Linux OS faces the following security threats:  Manipulated attacks  Manipulated attacks are major attacks the OS faces. data corruption. Hackers attack the system by utilizing OS vulnerabilities that are caused by various factors such as OS leaks. The following factors make the OS vulnerable:  Draft A (2013-04-09) OS leaks Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. file permissions. and backdoor programs. Description This feature hardens Linux security and protects against attacks without interruption to ongoing services. Programmed attacks Programmed attacks mainly refer to computer viruses. wrecking havoc for the network security.eCNS600 Feature Description 1 Basic Features 1. script viruses.. A secure OS is essential to ensure proper running of NEs and prevent unauthorized operations. and improves user satisfaction. worm viruses.7 Basic Platform 1. After seizing the super control rights. Linux security is hardened using the following means:  Minimized OS  OS passwords. information loss. and low efficiency. protects against hackers and viruses. insecure passwords. including executable file viruses.

Ltd Default Password 53 . for example. and clearing leaks.  Incorrect file permissions With file permissions. To protect files and directories against unauthorized access. If the OS is not promptly patched. or executed by unauthorized users. Therefore. writing. The administrator can also create other users for routine operations and maintenance (OM). If incorrect permissions are granted to user groups or others.  Insecure network services All network services have security risks. users can operate files such as reading. These users can be assigned different permissions.  Configuring OS passwords.. the system may get infected with viruses. For example. important files may be unexpectedly read. If users open email attachments sent from unknown addresses or visit unknown websites. and confidentiality. protection. These services and components affect OS performance and security. assign file User root has the highest huawei rights. read. Telnet does not encrypt or verify sessions. the Linux OS defines three types of users: owner.  Insecure accounts or passwords Hackers and viruses can easily crack insecure accounts and passwords using means such as password dictionaries or brutal-force crackers. network services such as Samba have security leaks. written. as described in Table 1-9. closing ports. user group. and others. it transmits user names and passwords over the network in plaintext. the OS needs to be streamlined for different purposes. and kernel parameters Different users are assigned different file permissions to protect important files from being written. hackers or viruses may utilize these leaks to attack the system. or executing files. Table 1-9 OS users and rights User Name Function Rights root User root is the default user. closing services. or executed. directly powering off the Linux OS) may lead to system faults or system breakdown. and can install and Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. In addition to the default user root. OS Security Hardening Policies Linux security is hardened using the following policies:  Minimizing the OS The default software package of the Linux OS contains many services and components. In addition. including: − Reducing the system size − Increasing the startup speed − Improving the system security − Retaining existing services and functions after minimization The minimized OS supports system security measures. the Linux OS creates a user named omu. This user can control all resources. create other users. most of which are optional. file permissions.eCNS600 Feature Description 1 Basic Features OS leaks arise from program design or function defects such as identity authentication defects and service loopholes. File permissions are essential to file sharing.  Incorrect operations Incorrect operations (for example.

− System logs System logs are configured in the /etc/syslog-ng/syslog-ng. Centralized log management can reduce the daily workload of querying logs and to help trace attackers. This user manages OMU processes and performs routing OM functions by using. and the password is managed by the enterprise customer. The default path is /var/log/messages. and log formats. After the deployment. for example. −  Configuring interconnection security data To harden system security. − utmp is saved in /var/run/utmp. user root can perform installation and configuration.  User omu has permissions to control the status of OMU processes. Different logs are saved in different paths: − The saving path of a system log can be specified by the destination messages parameter in the /etc/syslog-ng/syslog-ng. the OS uses different log management policies based on log types. The policies for managing OS logs are as follows: − Creates a centralized log management mechanism. set the certificate as Common Cert. this user cannot perform routine OM. saving paths. use a central log server to save and managing logs. uninstall applications. and restart. If multiple computers use the SuSE Linux OS.eCNS600 Feature Description 1 Basic Features permissions to them. Linux OS logs are classified into two types: − Login logs utmp and wtmp are key log files in the Linux OS log system. The client supports two types of certificates: − Draft A (2013-04-09) Common Cert: To apply a certificate to all offices. − Backs up logs. wtmp records the information about login. omu User omu is created during the installation of the OMU.. and perform all operations supported by the OS. − wtmp is saved in /var/log/wtmp. utmp records the information about users who have logged in to the system. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.conf file.conf file. and logs. alarms. omu Managing OS logs To better manage OS logs and protect their security. data exchange. Controls the access to logs. Ltd 54 . the OS supports the configuration of the following security data for interconnection between an OMU (or another board) and an OM node (such as an LMT): − Client digital certificate A client digital certificate is used to authenticate a client that communicates with the OMU. − Compresses logs and save logs for a long period. power-off. server During system deployment. logout.

Dependency This feature does not depend on other features. SSL connections are recommended for secure data transmission. the OS allows the following security configurations for the shelf management module (SMM): − − Prohibiting a user from accessing the SMM from an external network port − Prohibiting user root from accessing the SMM.eCNS600 Feature Description 1 Basic Features − − Server Cert: To apply a certificate to only one office. SMM security data To harden system security during deployment and routing OM.. and allowing only user smm to access the SMM Secure transmission mode between a client and the OMU By default. set the certificate as Server Cert. Standards None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. the system supports SSL connections and common connections. Ltd 55 .

Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 2 Optional Features 2 Optional Features 2. EPS Encryption Algorithm 2 (EEA2) and EPS Integrity Algorithm 2 (EIA2).1. If the UE supports AES. Ltd 56 . used to transmit user data and signaling between them. After a UE attaches to the network. 3GPP defines two AES algorithms.1 eCNSFD-110001 NAS Encryption and Integrity Protection (AES) Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. the eCNS determines whether to use AES according to local policies. Description AES is the most widely used encryption and integrity protection standard in the world.. Summary This feature uses Advanced Encryption Standard (AES) to protect non-access stratum (NAS) signaling and improve system security. If AES is used. the eCNS uses AES to encrypt and protect the integrity of signaling between the UE and the eCNS.1 Security Management 2. the UE notifies its supported encryption and integrity protection algorithms to the eCNS. with the key length of 128 bits. Benefits This feature ensures the security and reliability of NAS signaling in addition to user data. NAS is a protocol layer between the UE and the EPC.

EPS encryption algorithm 1 (EEA1) and EPS integrity algorithm 1 (EIA1).eCNS600 Feature Description 2 Optional Features Enhancement None Dependency This feature does not depend on other features. Benefits This feature ensures the security and reliability of NAS signaling in addition to user data. "3GPP System Architecture Evolution (SAE). Ltd 57 . Description SNOW 3G is an EPS security standard. the eCNS determines whether to use SNOW 3G based on the local policy to encrypt and protect the integrity of signaling between the UE and the eCNS. with the key length of 128 bits. used to transmit user data and signaling between them. Security architecture" 2. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.401. Standards 3GPP TS 33. NAS is a protocol layer between the UE and the EPC. 3GPP defines two SNOW 3G algorithms.. the UE notifies its supported encryption and integrity protection algorithms to the eCNS.2 eCNSFD-110002 NAS Encryption and Integrity Protection (SNOW3G) Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. If the UE supports SNOW 3G. Enhancement None Dependency This feature does not depend on other features. After a UE attaches to the network.1. Summary This feature uses SNOW 3G to protect NAS signaling and improve system security.

and TLSv1. Description SSL is a security protocol that was first proposed by Netscape to provide secure communication for the application layer based on TCP transmission. Summary The eCNS employs Huawei SeCert Transport Layer Security (TLS) development library and supports SSLv3.3 eCNSFD-110003 O&M SSL Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001.1. available SSL versions are SSLv1. data is transmitted over networks while remaining intact. Ltd 58 . among which SSLv3 is the latest version. Both the client and the server have their own identifiers.0. SSL provides the following security services:  Identity authentication Identity authentication means checking whether the peer end is the actual end with which you want to communicate. Document 2: SNOW 3G Specification 2.1 by default. "Security architecture"  ETSI Specification of the 3GPP Confidentiality and Integrity Algorithms UEA2 & UIA2. SSL authenticates the server and the client based on digital certificates to confirm that they are legitimate users.. SOAP interface.401. To verify that a user is Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. In the TCP/IP protocol stack. Currently. FTP. SSL is applied between the transport layer and the application layer and adopts TCP to carry messages. The ISP therefore becomes more competitive and will be exposed to greater business profits.0.0 and TLS1. The standardized versions of SSL are TLS1. SSL is widely used in services such as Web. The Secure Socket Layer (SSL) feature can be implemented when the eCNS communicates with the M2000 or LMT to enhance security through encryption. binary channel. Web interface. SSLv2.eCNS600 Feature Description 2 Optional Features Standards  3GPP TS 33. therefore ensuring secure transmission for the application layer.1. and Telnet. and the network operation expenditure is reduced. and FTP file transfer channel between the eCNS and the M2000 or LMT can be encrypted to ensure secure transmission. Therefore. an ISP establishes closer long-term cooperative relationships with them and improves service quality as the ISP makes full use of the existing network resources. the MML channel. which are numbered with a public key. TLSv1. and SSLv3.  By providing the SSL value-added service to enterprises and individuals. Benefits  The security of accounts and passwords of Internet service providers (ISPs) for operation and maintenance is guaranteed.

Summary The eCNS allocates static IP addresses to UEs based on subscriber data. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. 3DES. The common encryption algorithms are DES. SSL ensures connection privacy by employing encryption algorithms.2 Service Management 2. Enhancement None Dependency This feature does not depend on other features. Benefits This feature provides a basic function for radio access.1 eCNSFD-110004 Static IP Address Allocation Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Ltd 59 . SSL requires digital authentication during data exchange in the handshake stage. and RC4. Standards None 2.eCNS600 Feature Description 2 Optional Features legitimate.  Connection privacy Connection privacy means that data is encrypted before transmission to avoid data cracking by illegitimate users. RC2. SSL guarantees data integrity by employing message digest algorithms.  Data integrity Data integrity means that any modification to data during transmission can be detected.. The common message abstract algorithms are MD5 and SHA-1. This feature is an optional feature and is under license control. SSL sets up a secure channel between the client and the server so that all SSL-processed data can reach the destination without being modified.2.

This feature is an optional feature and is under license control.2. This mode is applicable to enterprise customers or internet service providers (ISPs) who manage the RADIUS server and plan IP addresses for their internal users. This mode is a pure static IP address allocation mode. Standards 3GPP TS 23. the eCNS allocates a dynamic IP address to a UE from the local address pool during the activation of a bearer for the UE. Ltd 60 . Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. this IE indicates the method the UE expects to use to obtain an IP address. This IE contains protocol information (including an IP address field) the UE must obtain before it is able to access an external PDN. which requires complex configurations. The local address pool contains the IP addresses planned by the enterprise customer. This module matches the IMSI of each UE to an IP address range planned by the enterprise customer.  IP address allocation from the RADIUS server In this mode.401 defines three modes of allocating IP addresses to UEs:  IP address allocation from the local address pool In this mode.2 eCNSFD-110005 Multiple PDN Connection Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Note that dynamic IP addresses are carried in access response messages sent by the RADIUS server.eCNS600 Feature Description 2 Optional Features Description A UE must obtain at least one IP address before it is able to access PS services.  Static IP address allocation In this mode. In addition. the eCNS allocates IP addresses to UEs from its integrated subscriber data module. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 2.. A PDN Address Allocation IE is specified during the setup of a default bearer for the UE. the eCNS allocates dynamic IP addresses obtained from the RADIUS server during UE authentication in the bearer activation procedure. Enhancement None Dependency This feature does not depend on other features. 3GPP TS 23.401.

For example. The disconnection procedure cannot be used to disconnect the last PDN connection. Description The EPS can support simultaneous exchange of IP traffic between a UE and multiple PDNs by using one or several PDN GWs. The UE can use the disconnection procedure to disconnect from any PDN. "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access" 2. The UE also needs to support the feature. Therefore..401. the EPS must support the UE-initiated PDN connection procedure.2. are released. the UE can receive multimedia messages when surfing on the Internet or send pictures on the websites through multimedia messages. The UE-initiated PDN connection procedure includes the establishment of a default bearer. The usage of multiple PDNs is controlled by network policies and defined in the subscription data. Enhancement None Dependency This feature does not depend on other features. In this disconnection procedure. To allow one or several connections to the PDN. Standards 3GPP TS 23. This feature is an optional feature and is under license control.3 eCNSFD-110008 SPI-based QoS Profile Control Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. all bearers related to the disconnected PDN. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. including the default bearer.eCNS600 Feature Description 2 Optional Features Summary A UE can create several PDN connections to access different networks at the same time. the UE can use other services without stopping the current service. Ltd 61 . The UE or eCNS can initiate a detach procedure to disconnect the last PDN connection. Benefits The multiple PDN feature enables a UE to connect to several networks at the same time.

SPI refers to the inspection of quintuples in IP packet headers at L3 and L4. For example.eCNS600 Feature Description 2 Optional Features Summary This feature uses the shallow packet inspection (SPI) technique to recognize traffic flows and provide QoS guarantees. the eCNS filters the packets based on the quintuples and according to the rules. the eCNS can age the quintuple used for setting up the dedicated bearer. After the filtering. If the filtering rules for L3 or L4 are configured. and improve user satisfaction. If the filtering rules for L3 or L4 are configured. If a dedicated bearer fails to be set up.. and protocol type. eCNSFD-110 008. destination address. Dependency This feature does not depend on other features. 01 eCNS600 V100R001 First official release. destination port number. the eCNS initiates a dedicated bearer setup procedure. the eCNS resolves quintuples in packet headers. A quintuple contains the source address. The purpose is to trigger the SPI procedure again and to prevent a temporary setup failure from becoming a permanent setup failure. source port number. the eCNS applies different QoS profiles to different types of packets.4 eCNSFD-110009 Offline Charging Applicable NEs eCNS Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. 02 eCNS600 V100R002 Added the function of reestablishing dedicated bearers after establishment failures. provide different QoS guarantees for different services. Description In the uplink. the eCNS filters the packets based on the quintuples and according to the rules.2. Benefits This feature enables the eCNS to perform effective control and refined management. Ltd 62 . Standards None 2. In the downlink. the eCNS resolves quintuples in packet headers after GTP decapsulation. Enhancement Table 2-1 Release history and enhancement Feature Version Product Version Details eCNSFD-110 008.

consolidation. Currently. and helps develop operating policies. the eCNS does not support content-based offline charging. and then send the processed data to the billing system (BS) for generating final bills. The CGs perform original CDR storage.eCNS600 Feature Description 2 Optional Features Availability This feature is introduced in eCNS600 V100R002. This feature is an optional feature and is under license control. End Users This feature helps end users reduce consumption based on information about data services they used. Summary This feature enables the eCNS to send generated original CDRs to CGs using GTPv2. Ltd 63 . and standardization. Benefits Enterprise Customers This feature enables enterprise customers to perform exact charging based on information about data services used by end users.. Information about end users' data services helps analyze end users' behaviors and habits. Description Application Scenario This feature applies to the following scenarios:  Traffic-based charging  Duration-based charging Network Structure The network structure for offline charging is as follows: Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. this feature provides reference data for accounting between enterprise customers and for accounting between an enterprise customer and an Internet service provider (ISP). In addition.

If there is no original CDR to send. the eCNS sends an Echo message to the CG every one minute. the eCNS considers the CG to be faulty. and standardization. generates original CDRs.. If the CGs have different priorities. N is set to 3 by default. the eCNS sends again the original CDRs to the CG. and then send the processed data to the BS for generating final bills. If the response times out. CDR Buffering Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. The CGs perform original CDR storage. and sends the original CDRs to CGs using GTP'. Ltd 64 . the eCNS can send the original CDRs to different CGs. CG Link Detection If the eCNS does not receive any response after sending original CDRs to a CG. This reduces the performance requirement on a single CG and improves the reliability of original CDR transmission. the eCNS considers the CG to be faulty.eCNS600 Feature Description 2 Optional Features Figure 2-1 Network structure for offline charging The eCNS records information about data services used by end users. If the eCNS does not receive any response for N consecutive times. the eCNS selects the CG with the highest priority. consolidation. Load Sharing Between CGs The eCNS can connect to multiple CGs and configure priorities for these CGs. When a large number of original CDRs are generated.

251. it encodes the original CDRs in Abstract Syntax Notation One (ASN. Ltd 65 . The preceding procedure shows that the eCNS may generate multiple original CDRs for a service procedure. CDR Generation The eCNS can control whether to generate original CDRs for an APN based on a specified charging characteristic. traffic volume. After the link recovers. CDR Transfer After the eCNS generates original CDRs.. and service duration. number of QoS changes. Charging architecture and principles"  3GPP TS 32. and then sends the GTP' packets to CGs. the eCNS generates final original CDRs.240. The original CDR generation procedure consists of the following three phases:  Generating start original CDRs The eCNS generates start original CDRs when the services are activated. The original CDRs generated by eCNS only comply with R9 CDR version.  Generating intermediate original CDRs The eCNS generates intermediate original CDRs for the end user when the service duration. Packet Switched (PS) domain charging" Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Enhancement None Dependency Table 2-2 Interaction with other features Feature Interaction eCNSFD-070600 Ga Interface Offline charging depends on Ga interface to CG Standards  3GPP TS 32. charge rate. "Charging management.eCNS600 Feature Description 2 Optional Features If the communication between the eCNS and CGs are broken. A CDR contains multiple fields such as user ID.  Generating final original CDRs After the end user stops the services. based on which the BS charges end users.1) format. and records the user's subsequent actions that require charging.298. Charging Data Record (CDR) parameter description"  3GPP TS 32. "Charging management. or another parameter value reaches their threshold. service time segment. the eCNS buffers original CDRs. encapsulates the original CDRs using GTP'. the eCNS sends the original CDRs to the CG. "Charging management. The BS consolidates these CDRs and generate final bills.

Ltd 66 .5 eCNSFD-110011 UE IP Address assigned by the Radius AAA Server Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002.eCNS600 Feature Description 2 Optional Features  3GPP TS 32. Summary eCNS600 cooperates with Radius AAA Server.295. Charging Data Record (CDR) transfer" 2. their IP addresses can be centrally assigned by Radius AAA Server. "Charging management. Description Application Scenario  Centralized management of UEs for enterprise customers Enterprise customers require the deployment of multiple P-GWs and central management of UE IP addresses. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. in railway industry. Though when wireless terminals roam across core networks..2. For example. their IP addressed should be unique and fixed. Benefits Enterprise Customers Wireless terminal IP addresses are centralized managed by enterprise customers. the IP addresses of terminals in vehicles are required to be centrally assigned and when these terminals roam across core networks. to implement centralized assignment of wireless terminal IP addresses in whole network. as shown in the following figure.

P-GW P-GW AAA Server MME HSS AAA Server LTE UE S-GW P-GW eCNS600 Services and Functions The eCNS600 obtains UE IP addresses from the RADIUS AAA server and provides various services and functions. Ltd 67 . and accounting (AAA) server for enterprise customers If the number of UEs in an enterprise network exceeds the threshold of an AAA server's capacity of authentication or assigning UE IP addresses.  UE IP address assignment by RADIUS AAA server The eCNS600 obtains UE IP addresses from the AAA server through RADIUS authentication. authorization. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 2 Optional Features P-GW PGW AAA Server LTE UE  MME HSS S-GW P-GW eCNS600 Capacity expansion of the authentication..  Mapping between APN and AAA server The eCNS600 supports the configuration of active/standby AAA servers for each APN. as shown in the following figure. the enterprise customer can add RADUIS AAA servers to share the load of processing authentication messages sent by P-GWs.

are sent actively by the RADIUS AAA server to the P-GW.  Context deactivation according to RADIUS Packet of Disconnect (POD) messages The eCNS600 retrieves a UE IP address according to a POD message. The Initial UE Message shall send the EPC the three information elements in the UE Attach process.  Striping domain name from user name The eCNS600 supports the ability to select whether to include a domain name in the user name of the authentication message sent to the RADIUS AAA server. If the active server is faulty. POD messages. The eCNS600 transmits the extended attributes defined in the 3GPP 29. Ltd 68 . If yes. By default. That is. The UE must support at least the Authentication Type. Before an authentication message is sent. the message sent to the AAA server carries the user name without a domain name. Dependency This feature depends on the PCO setting of the UE.eCNS600 Feature Description 2 Optional Features  Configuring authentication message resend count and expiration time The eCNS600 supports the configuration of authentication message resend count and expiration time based on network conditions. The eCNS600 deactivates context according to POD messages.  Configuring port numbers for communicating with the AAA server The eCNS600 supports optional configuration of the destination ports of the eCNS600 for communicating with the AAA server. Standard RFC 2865 Remote Authentication Dial In User Service (RADIUS) Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. which are used to deactivate subscribers.061 defines the protocols of interfaces between the P-GW and the AAA server. all the messages are sent to the standby server. the domain name will not be stripped from the user name. Enhancement None. the eCNS600 checks whether the APN is configured to strip a domain name. the port number for authentication is 1812 and that for accounting is 1813. and MNC) to the AAA server for authentication reference. The port number for authentication ranges from 1 to 65535 for compatibility with other AAA server ports whose numbers are not the default values. In this mode. User Name and Password items in its PCO Setting. it will receive all RADIUS authentication messages.  Active/Standby AAA server The eCNS600 allows the AAA servers to receive RADIUS authentication messages in active/standby mode.. MCC. the domain name is kept. By default. The eCNS600 only supports active/standby mode connection with AAA Servers. if the active AAA server works normally. It checks the validity of POD messages and receives only PODs containing server IP addresses.  3GPP extended attributes 3GPP 29. If no. the domain name will be stripped from the user name before an authentication message is sent to the AAA server. Then it deactivates subscribers based on their IMSIs and NSAPIs.061 protocol (for example: IMSI.

. Description Operation and maintenance engineers can use the end-to-end subscriber trace feature to trace subscriber signaling messages and then analyze the traced signaling messages for handling customer complaints. Ltd 69 . Summary The end-to-end subscriber trace feature enables multiple MEs to trace signaling messages of a subscriber in a trace task and to send traced messages to a specified device such as an NMS. adjusting and optimizing networks.2. General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access 3GPP TS 29. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.401. and testing new features. locating network faults. analyzing subscriber behaviors.6 eCNSFD-110012 E2E Subscriber Tracing Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002. Benefits Enterprise Customers The end-to-end subscriber trace feature can improve fault location efficiency for refined network maintainance. Figure 2-2 shows the end-to-end subscriber trace procedure.eCNS600 Feature Description 2 Optional Features 3GPP TS 23.061 Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN) 2.

 Trace reference ID It uniquely identifies a trace session. MME sends trace control parameters to the S-GW.  Trace interface list It lists the interfaces on which messages need to be traced. MME traces signaling messages and sends traced signaling messages in file report mode to the EMS through the trace data link. and P-GW. the EMS displays the traced messages.  Trace depth It indicates the content depth of traced messages reported by the MEs. P-GW. trace ME list. Trace data includes the trace reference ID. S-GW. The element management system (EMS) sends a trace command to MME through a management link and the instruction includes creating. Each ME has a trace interface list. and S10 interfaces can be traced. 3. and trace interface list of each ME. and eNodeB through signaling links. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. trace depth.. S6a. the messages on the S1-MME. The MME sends trace data to the MEs in this list. MME.eCNS600 Feature Description 2 Optional Features Figure 2-2 End-to-end subscriber trace NMS Itf-N Itf-N Itf-N Vendor B Vendor A 3 1 EMS 3 2 PGW EMS EMS 1 3 3 3 2 SGW HSS 1 S1 2 2 MME eNB S1 eNB 1. that is. including the eNodeB. only the maximum depth is supported. Then.  Trace ME list It lists the MEs required to trace signaling messages in a trace session. Currently. The trace command is subscriber-specific and the subscriber is specified by the IMSI or MSISDN. When the eCNS600 servers as the MME. complete messages are reported. checking. the EMS sends a trace command to the HSS and the HSS informs the MME of the instruction through a message over the S6a interface. Ltd 70 . and deleting trace sessions. 2. Alternatively.

Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.3 Reliability 2. eNodeB. For the eCNS600 to implement the end-to-end subscriber trace function. the eNodeB needs to know the status of the eCNSs. MME. Therefore.eCNS600 Feature Description 2 Optional Features Enhancement None. and HSS support the end-to-end subscriber trace function. In addition. Telecommunication management. the eNodeB needs to obtain the load sharing weights of the eCNSs through the S1 interfaces so that the eNodeB can select an eCNS for a UE from available eCNSs. Ltd 71 . at least the EMS must support the end-to-end subscriber trace function. Summary eCNS redundancy is a disaster tolerance mechanism where multiple eCNSs serve the same radio coverage area (called the eCNS redundancy area). the eNodeB selects an eCNS for a UE based on the load sharing policy configured on the eNodeB. This feature is an optional feature and is under license control. it adjusts the load sharing policy and assigns new service requests to other eCNSs. Description In eCNS redundancy scenarios. Dependency The complete end-to-end subscriber trace function requires that all of the EMS. P-GW.3.. These eCNSs connect to all the eNodeBs in this area and work in load sharing mode. If the eNodeB detects that an eCNS is unavailable.1 eCNSFD-110006 eCNS Redundancy Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. Benefits This feature implements disaster tolerance and improves the network availability. Standard 3GPP TS 32. Subscriber and equipment trace: Trace control and configuration management 2. S-GW.422.

Table 2-3 eCNS redundancy specifications Item Specification Network usability 1 .4.236. Ltd 72 . eCNS redundancy can be used to increase the maximum data throughput when the forwarding capability of the network becomes a bottleneck. If one or more tracking areas (TAs) are served by multiple eCNSs. Standards  3GPP TS 23. these TAs form an eCNS redundancy area. Table 2-3 lists eCNS redundancy specifications.. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. This feature is an optional feature and is under license control.eCNS600 Feature Description 2 Optional Features An area served by multiple eCNSs is called an eCNS redundancy area.4 Networking 2.(1 – A)N Maximum data throughput N x 4 Gbit/s Remarks A: system availability of an eCNS N (≤5): number of eCNSs 4 Gbit/s: maximum data throughput of an eCNS Enhancement None Dependency This feature does not depend on other features.401.1 eCNSFD-110007 Bidirectional Forwarding Detection (BFD) Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R001. eCNS redundancy mainly implements disaster tolerance and improves the network availability. In addition. "General Packet Radio Service (GPRS) enhancements for Evolved universal Terrestrial Radio Access Network (E-UTRAN) access"  3GPP TS 23. "Intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN) nodes" 2.

BFD packets are encapsulated in UDP packets.  Dynamically modifies BFD parameters without affecting the status of ongoing sessions. In asynchronous BFD.eCNS600 Feature Description 2 Optional Features Summary Bidirectional forwarding detection (BFD) is used to detect communication faults between devices and notify the upper layers of the faults. which does not significantly add to the network load and requires little time to complete. The source port number is within the range of 49152 and 65535. The eCNS supports BFD in asynchronous mode. the devices periodically send BFD packets to each other. Benefits This feature provides a transmission-media-independent detection mechanism that enables fault detection at the millisecond level. The destination port number is 3784. If one device does not receive any packet from the other device within a specified period.. Asynchronous BFD is most commonly used. All the BFD packets of a session use the same source port number. Description The eCNS supports single-hop BFD. but not in demand mode. the session is considered to be down. The major characteristics of BFD are as follows:  Implements bidirectional link detection. which refers to detection of IP connectivity between directly connected devices. Table 2-4 lists BFD specifications. virtual circuit. Ltd 73 . or tunnel. For a data protocol. Table 2-4 BFD specifications Item Specification Shortest detection time (ms) 30 Maximum number of BFD sessions 16 Maximum number of static routes bound to a BFD session 512 Maximum number of default routes bound to a BFD session 6 Enhancement None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. only one BFD session exists on a specified interface such as a physical port.

Benefits Enterprise Customers This feature provides a new business model for mobile VPNs. Standards  Draft-ietf-bfd-v4v6-1hop-04  Draft-ietf-bfd-base-04  Draft-ietf-bfd-multihop-04 2. With these addresses. this feature allows the wireless device to obtain a network segment address (not only an IP address) and assign IP addresses to the terminals. improves working efficiency. End Users Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. and reduces operating costs.Unlike Network Address Translation (NAT). the terminals can communicate with the enterprise network. This feature is an optional feature and is under license control. The eCNS can determine whether to use this feature for an APN. Ltd 74 .eCNS600 Feature Description 2 Optional Features Dependency Table 2-5 Interaction with other features Feature Interaction eCNSFD-040700 VRF In the network scenario of dual active ports with static routes. Summary This feature applies to mobile VPNs.4.2 eCNSFD-110010 Routing Behind MS Applicable NEs eCNS Availability This feature is introduced in eCNS600 V100R002. This feature allows terminals to access an enterprise network through a wireless device and allows mutual visits between the terminals and the enterprise network.. BFD should be activated in VRF in order that eCNS could switch route when old route is fault.

WiFi terminals.  IP terminals IP terminals are connected to the CPE. selects tunnels in the enterprise network based on the destination IP addresses. Description Application Scenario This feature is mainly applicable to enterprise customers' mobile VPNs. mobile VPN users need to visit or be visited by an enterprise network. It originates the setup of a default EPS bearer. Both mobile VPN users and common home users can access a network through a wireless device. Common home users visit a network through a wireless router. and sends the data to target terminals. Figure 2-3 shows the network structure for the Routing Behind MS feature. These terminals may be mobile phones. As NAT cannot meet this requirement. and secure manner. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. Ltd 75 . Figure 2-3 Network structure for the Routing Behind MS feature Main Functional Units  CPE The CPE is a wireless device. this feature allows mutual visits between branches and headquarters in a flexible.eCNS600 Feature Description 2 Optional Features This feature enables end users to access the enterprise network through a wireless device. rapid. In comparison.. However. and assigns IP addresses to the connected terminals. In addition. obtains a network segment address. The router uses NAT for address translation and allows multiple users to access the network at the same time even when the router obtains only one IP address during an EPS bearer activation procedure. The eCNS also receives downlink data from PDNs. the Routing Behind MS feature is introduced to address this issue. the technologies for the two applications are very different.  eCNS The eCNS receives uplink data from the CPE and forwards the data to PDNs. or computers.

4. This feature is an optional feature and is under license control. most traffic is originated by the network side and the IP addresses of the UEs are fixed. a UE can access multiple interconnected eCNSs at different time points without changing its fixed IP address. EPC is short for evolved packet core. Summary This feature applies to mobile virtual private networks (VPNs).3 eCNSFD-110013 UE Fixed IP MultiHoming Applicable NEs eCNS Availability This feature was introduced in eCNS600 V100R002. The eCNS dynamically delivers route information containing the UE fixed IP address as the destination IP address over the SGi interface through the Open Shortest Path First (OSPF) protocol. Normally. Standards None 2. Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 2 Optional Features Enhancement None Dependency Table 2-6 Interaction with other features Feature Interaction eCNSFD-040600 OSPFv2 One VRF support more than OSPF process. Benefits Enterprise Customers With enterprise networks. In this way.. The UE Fixed IP MultiHoming feature enables the UE to change the route with the eCNS accessed by the UE. while one OSPF process belongs to only one VRF. This improves the UE's capability to perform cross-EPC services. Ltd 76 . these UEs attach only to a specific eCNS.

When a UE detaches from the eCNS. the enterprise network consists of multiple eCNSs whose coverage regions are overlapped. the eCNS delivers route information containing the UE fixed IP address as the destination IP address over the SGi interface through the OSPF protocol. Network redundancy backup: In this scenario. The following figure shows the networking for UE Fixed IP MultiHoming. Ltd 77 . The UE has a fixed IP address and retains its fixed IP address after attaching to another eligible eCNS in the same region. APP Server: An APP Server initiates services to the UE. When the router receives downlink data sent by the APP server. Enhancement None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 2 Optional Features Description Application Scenarios Cross-region access: In this scenario. sends downlink data to the UE. the eCNS notifies the router to delete the route over the SGi interface through the OSPF protocol. eCNS: When a UE attaches to the eCNS. Figure 2-1 Networking for UE Fixed IP MultiHoming eCNS A S1 SGi Router eNodeB A S10 OSPF Area S5 APP Server UE S1 SGi eNodeB B eCNS B Main Functional Units UE: A UE has a fixed IP address and selects an eCNS on an EPC to attach to. the router sends the data to the eCNS that recently delivers the route based on learned routes. the enterprise network consists of multiple eCNSs that cover different regions without any overlap. Router: A router learns the route information containing the UE fixed IP address as the destination IP address through the OSPF protocol. and receives uplink data from the UE. The UE has a fixed IP address and retains its fixed IP address after attaching to the eCNSs in different regions..

Standards None Draft A (2013-04-09) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.eCNS600 Feature Description 2 Optional Features Dependency Table 2-7 Interaction with other features Related Feature Interaction eCNSFD-040600 OSPFv2 This feature depends on the eCNSFD-04600 OSPFv2 feature.. eCNSFD-110010 Routing Behind MS This feature is mutually exclusive to the eCNSFD-110010 Routing Behind MS feature. Ltd 78 .

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