configuration check

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To ensure proper running of the radio network, configuration check must be conduct

so that the transmission network meets the conditions for site deployment. You can

referring to contents in the Scenarios sheet and then find the corresponding items t

This document describes the requirements for configuration parameters of transmiss

in the GBSS14.0 Abis and UMTS RAN14.0 Iub insecure IPRAN networking scenario

NEs should be conducted by transmission network engineers. In IPRAN networking,

transmission network through the Ethernet interface, and the BTS/NodeB can conne

multiplexing (TDM) interface or Ethernet interface. This document does not describe

networking between the BTS/NodeB and the BSC/RNC.

If configurations of the live network are different from those of the recommended sce

Design Department to determine the networking solution.

This document is intended for customer service engineers, operation engineers, and

Reference: RAN14.0 Iub&GBSS14.0 Abis IP Transmission Networking Solution Rec

from the Wireless Transmission Solution Design Department

Configuration Check Guide to IPRAN Tra

To ensure proper running of the radio network, configuration check must be conduct

so that the transmission network meets the conditions for site deployment. You can

referring to contents in the Scenarios sheet and then find the corresponding items t

This document describes the parameter configuration requirements for transmission

IPRAN networking scenario. The check on configurations between transmission

networking, the BSC/RNC is recommended to connect to the transmission network t

to the transmission network through time division multiplexing (TDM) or Ethernet. Thi

on end-to-end TDM networking between the BTS/NodeB and the BSC/RNC.

If configurations of the live network are different from those of the recommended sce

Design Department to determine the networking solution.

This document is intended for customer service engineers, operation engineers, and

Reference: RAN14.0 Iub&GBSS14.0 Abis IP Transmission Networking Solution Rec

from the Wireless Transmission Solution Design Department

Configuration Check Guide to IPRAN Tra

1/11/2014 华为机密，未经许可不得扩散第1页，共62页




ed on the transmission network before site deployment

confirm the transmission networking scenario by

o be checked.

ion NEs connecting to the BTS/NodeB and BSC/RNC

. The check on configurations between transmission

the BSC/RNC is recommended to connect to the

ct to the transmission network through the time division

the configuration check on end-to-end (E2E) TDM

narios, contact the Wireless Transmission Solution

R&D engineers participating in remote commissioning.

ommended for Commercial Networks by Yin Zhaogen

nsmission Networking

ed on the transmission network before site deployment

confirm the transmission networking scenario by

o be checked.

NEs connecting to the BTS/NodeB and in an insecure

NEs is not involved in this document. In IPRAN

hrough the Ethernet, and the BTS/NodeB can connect

is document does not involve the configuration check

narios, contact the Wireless Transmission Solution

R&D engineers participating in remote commissioning.

ommended for Commercial Networks by Yin Zhaogen

nsmission Networking




rotocol (PPP)/Multi-link PPP (MLPPP) port



Interface type

MTU(Byte)MRU(Byte)

SPEED

Duplex

Flow control auto-negotiation

Port STP

LAG type

Number of trunks

Backup mode

Priorities of ports

Transmitting speed of HELLO

Recovery time

Port status (Active/Passive)

Configuration Items NodeB Support

Mode E1/T1E1_DOUBLE_FRAME

E1_CRC4_MULTI_FRAME

T1_SUPER_FRAME

T1_EXTENDED_SUPER_FRA

ME

Line Code B8ZS/HDB3/AMI

Balanced/unbalanced Balanced/unbalanced mode

Tx Clock Internal(Master)/Line(Slave)

Configuration Items NodeB Support

multi-class option Enable/Disable

multi-class number 8&4sequence number field

size

Long(24bits)/Short(12bits)

Bearing time slot Any combination of 31 time

slots

Fragment size 128-1500

Endpoint Discriminator Class=3(MAC Address)

Multilink MRRU 128-1500

MRU 128-1500

IP Head compress Disable, Enable

Parameter Type

IEEE802.3ad LAG

configuration

Physical-layer parameters

of the Ethernet interface

NodeB E1/T1 physical-layer parameters

NodeB PPP/MP parameters

Frame Format



Protocol field compress Disable, Enable

Address and control field

compress

Disable, Enable

PPP mux Disable, Enable

Validate protocol type NO_V, PAP_V, CHAP_V

CRC check mode 16bit

Configuration Items BTS Support

Mode E1/T1

E1_DOUBLE_FRAME

E1_CRC4_MULTI_FRAME

T1_SUPER_FRAME

T1_EXTENDED_SUPER_FRA

ME

Line Code B8ZS/HDB3/AMI

Balanced/unbalanced Balanced/unbalanced mode

Tx Clock Internal(Master)/Line(Slave)

Configuration Items BTS Support

multi-class option Enable/Disable

multi-class number 8&4

sequence number field

size

Long(24bits)/Short(12bits)

Bearing time slot Any combination of 31 time

slots

Fragment size 128-1500

Endpoint Discriminator Class=3(MAC Address)

Multilink MRRU 128-1500

MRU 128-1500

IP Head compress Disable, Enable

Protocol field compress Disable, Enable

Address and control field

compress

Disable, Enable

PPP mux Disable, Enable

Validate protocol type NO_V, PAP_V, CHAP_V

CRC check mode 16bit

BTS PPP/MP parameters

Note* The E1/T1 ports on the NodeB and BTS can use

BTS E1/T1 physical-layer parameters

Frame Format



Settings of Parameters of Huawei Devices on the

Physical Layer and Data Link Layer

10\100\1000BaseT, 100BaseX, 1000BaseX

46–1500

1500

100M/1000M/AUTO

FULL/AUTO

PAUSE

Not supported

Static

The BSC/RNC supports a maximum of eight trunks,

and the BTS/NodeB supports a maximum of two trunks.

1:1 active and standby

Different priorities for two ports of a BSC/RNC, with a

high priority for the port in the even-numbered slot;

different priorities for two ports of a BTS/NodeB

Fast

0 (immediate recovery)

Active

NodeB Default

E1

HDB3

Line(Slave)

NodeB Default

Enable

4

Long(24bits)

All 31 time slots selected

256

Class=3(MAC Address)

1500

1500

Enable

Depending on kinds of transmission media: unbalanced

E1_CRC4_MULTI_FRAME(Note1)



Disable

Disable

Disable

NO_V

16bit

BTS Default

E1

HDB3

Line(Slave)

BTS Default

Enable

4

Long(24bits)

All 31 time slots selected

256

Class=3(MAC Address)

1500

1500

Enable

Disable

Disable

Disable

NO_V

16bit

nly part of t imeslots. For scenar ios where only part

Depending on kinds of transmission media: unbalanced

E1_CRC4_MULTI_FRAME(Note1)



Recommended Settings of Physical-Layer Parameters and

Interface Parameters for the Peer Transmission Device

The type of the optical/electrical interface is consistent with the

interface type of the connected Huawei device. The transmission

distance is determined by the optical module interface between

Huawei device and the peer transmission device. The transmission

distance is smaller than 100 m for the CAT5 interface.

15001500

AUTO

AUTO

PAUSE

STP Disable

Static

Consistent with the TRUNK configurations on the BTS/NodeB and

BSC/RNC.

1:1 active and standby

Different priorities for two ports of a BSC/RNC, with a high priority

for the port in the even-numbered slot; configuration principles for

priorities of ports on devices on the BTS/NodeB side are consistent

with those for priorities of ports on the BSC/RNC.

Fast (HELLO packets are transmitted every 1s)

0 (immediate recovery)

Requirements for E1/T1 physical-layer parameters on the

transmission network

NodeB Peer Recommended

E1

HDB3

Master

Requirements for PPP/MP parameters of the peer transmission

devices

Peer Recommended

Enable

4

Long(24bits)

All 31 time slots selected* Note

256

No requirement

1500

1500

Enable

or Coaxial cable and balanced for twisted-pair cable

E1_CRC4_MULTI_FRAME



Disable

Disable

Disable

NO_V

16bit

Requirements for E1/T1 physical-layer parameters on the

transmission network

BTS Peer Recommended

E1

HDB3

(Note2)

Requirements for PPP/MP parameters of the peer transmission

devices

Peer Recommended

Enable

4

Long(24bits)

All 31 time slots selected* Note

256

No requirement

1500

1500

Enable

Disable

Disable

Disable

NO_V

16bit

f t imeslots are used, conf i rmed with Huawei R&D engineers.

or Coaxial cable and balanced for twisted-pair cable

E1_CRC4_MULTI_FRAME




1

Figure 1 Metro Ethernet transport network

The BSC/RNC is configured with the active and standby Abis/Iub

interface boards, which directly connect to the active and standby

Boards in e

Note: Ther

port.

BSC/RNC Transmission Configuration

Figure 2 IP bearer tran

network

Active/Standby Routers Configured on the

1. The BSC/RNC is configured with the active and standby interface boards, which connect to thedata between the BSC/RNC and the BTS/NodeB is forwarded by the active router, and the routerBidirectional Forwarding Detection (BFD) for single point of failure (SPOF) protection on the netw

(1) Networking type 1: The transport network is a Metro Ethernet. For example, optical sFigure 1.

(2) Networking type 2: Router 1 (RT1) and router 2 (RT2) are expanded to an IP bearer nexample, ATN, as shown in Figure 2.(3) Networking expansion: If router ports on the BSC/RNC side are insufficient or no L2 Eto connect the RNC to the routers, as shown in Figure 3.

2. The BSC/RNC, IP clock server, and data communication network (DCN) directly connect to RT

3. In type 1 networking, BTSs/NodeBs connect to the transport network through Ethernet interfac

through the Ethernet or E1/T1 interfaces.

Metro Ethernet

LSW1

VRRP3

IP119

IP110 IP112

IP10

RNC

RT1 RT2

VRRP1 & 2

IP19

IP13

IP200

IP70

M IPCLK

IP71

S IPCLK

IP81

IP80

M2000

IP601

LSW3

IP98

V R R P 4

I P 9

9IP12

IP91

INT OMU

LSW4

DCN

IP90IP92

IP97

IP600

IP93

IP11

IP210

INT

IP21IP23

IP22IP20

IP29

POOL

IPXXActive Ethernet Port

Standby Ethernet Port

Service IP Ethernet Line

E1 LineVLAN Interface IP

IPXX

IP××

Logical IPE1T1 Port

STM1 Port Backup Line

STM1 Line

NodeBGBTS

GTM U UMP TIP161 IP151

IP111

IP10

RNC

RT1

VRRP1 & 2

IP19

IP13

IP200

IP119

LSW1

IP70

M IPCLK

IP71

S IPCLK

IP81

IP80

IP98

V R R P 4

I P 9 9

IP12

IP91

INT OMU

IP90

IP BEARER

RT3

IP

IP11

IP210

INT

IP21IP23

IP20

IP29

POOL



Service IP

VLAN Interfac

IPXX

IP××

Logical IPE1T1 Port

STM1 Port

NodeBGBTS

GTMU UM PTIP161 IP151

IP111





2

3

4

1 1

2 2

1 1

2 2

3The conditions for switchover between the active and standby

boards on the BSC/RNC are as follows:

If no VLAN sub-interface is configured for the BSC/RNC, do not

configure the VLAN ID.

If a VLAN sub-interface is configured for the BSC/RNC, configure

the VLAN ID.

When no

(1) If the r

BSC/RNC t

same as th

(2) If no V

router conn

If a VLAN s

BSC/RNC t

the BSC/R

.

networking solutions (applicable to pooled or non-pooled

networking of boards on the BSC/RNC). VRRP (VR

RT2 conne

In Figure 1

(1) The porrouters) tha

must share

(2) An L2 E

50% of the

(3) VRRP1

In Figure 3,

(1) Type 1:

(2) Type 2:

transmitted

2

If router ports are insufficient or the routers do not support the L2

port configuration, the BSC/RNC connects to the active and

standby routers by using the LSW. Figure 3 shows the networking

diagram.

Recom

The active

IP address

VLAN Configuration of the Abis/Iub Interface on the BSC/RNC

If the BTS/

RT1 and R

heartbeat

Route Configuration for the BSC/RNC

In the pooled networking scenario, configure source IP-based

policy-based routing to implement route configuration for the

BTS/NodeB, and add static routes from the BSC/RNC to the

M2000.

In the non-pooled networking scenario, add static routes from the

BSC/RNC to the M2000 and BTSs/NodeBs. The next hop is the

virtual IP address of VRRP1 port on RT1 and RT2.

To ensure t

must be hi





4

5

6

1 1

2 2

3 3

1

2

1

2

,

the active port on the BSC/RNC initiates two BFD sessions to

detect interface IP addresses of the routers. If two BFD sessions

on the active port detect faults, the standby port initiates one

Address Resolution Protocol (ARP) detection session to detect the

virtual IP address of VRRP (see note 1).

(2) If the routers do not support BFD, ARP detections are initiated

on both the active and standby ports of the BSC/RNC. The ARPdetection duration on the active port must be longer than that on

the standby port. Otherwise, invalid switchovers may occur.

1

The master and slave clock servers are configured. They directly

connect to the active and standby routers RT1 and RT2 to

implement redundancy protection. The VLAN is not configured.

Range of Reserved IP Addresses for the BSC/RNC

3

The router

Each virtua

seconds.

Detection p

3

Echo: Disable

Asynchron

1The IP add

BSC/RNC.1192.168.0.0/16 (configurable)

The BTS/NodeB obtains clock signals from the IP clock server

using 1588v2 unicast packets by default.

Clock Server Configuration

On the GSM/UMTS network, it is recommended that the NodeB

provides a port for transport network connection and that the

interface IP address be configured on a NodeB transmission board.

The BTS connects to the NodeB through the backplane tunnel.

(1) The interface IP address IP1 and the device IP address IP2 are

configured on the NodeB. All services on the NodeB use IP2.

(2) The device IP address IP3 is configured on the BTS. All

services on the BTS use IP3. Both the transmission on the GSMnetwork and the transmission on the UMTS network use the

interface IP address IP1.

IP Address Configuration for the Ethernet Interface on the

BTS/NodeB

It is rcommended that the interface IP address be different from the

device IP address for the GSM/UMTS dual-mode base station,

BTS, or NodeB.

Correspon

(1) Add dir

(2) Add sta

Configure1

Authentication mode: Authentication not supported Echo: Disa

BFD Configuration on the BSC/RNC

Default detection period: 100 ms

In IP beare

is sent to th





4 2

8 6

9 7

8

other services on the NodeB. The transmission on the GSM

network is separated from that on the UMTS network.

(1) The interface IP addresses IP1, IP2, and IP3 and the device IPaddresses IP4 and IP5 are configured on the NodeB. The O&M

service on the NodeB uses IP4. The other services on the NodeB

use IP5. IP4 corresponds to IP1, and IP5 corresponds to IP2.

(1) The interface IP addresses IP1 and IP2 and the device IP

addresses IP3 and IP4 are configured on the NodeB. The OM




services on the BTS use IP5. The interface IP address of the BTS

is IP2.

Solution 5:

(1) The interface IP address IP1 is configured on the NodeB. All

services on the NodeB use IP1.

(2) The transmission on the GSM network is not separated from

that on the UMTS network. The device IP address IP2 is configured

on the BTS. All services on the BTS use IP2. The interface IP

address of the BTS is IP1.

Solution 6:

(1) The interface IP addresses IP1 and IP2 are configured on theNodeB. All services on the NodeB use IP1.



is NodeB IP1.

Correspon

(1) Add dir

(2) Add sta

Correspon

(1) Add dir

(2) Add sta

IP5.

Correspon

(1) Add dir

(2) Add sta

Correspon

(1) Add dir

(2) Add sta

Correspon

(1) Add dir

NodeB IP3.

(2) Add sta

5

6

7

Solution 2:


address IP3 are configured on the NodeB. All services on the

NodeB use IP3. The interface IP address of the NodeB is IP1.


services on the BTS use IP4. The transmission on the GSM

network is separated from that on the UMTS network. The interface

IP address of the BTS is IP2.

10

Solution 8:

(1) The interface IP addresses IP1, IP2, and IP3 and the device IP

addresses IP4 and IP5 are configured on the NodeB. IP4, which is

on the same network segment as IP1, is used by the OM service.

The other services on the NodeB use IP5. The interface IP address

of the NodeB is IP2.

Solution 7:


address IP3 are configured on the NodeB. IP3 is on the same

network segment as IP1. All services on the NodeB use IP3.





Correspon

(1) Add dir

IP3, and N

(2) Add sta

3

Correspon

(1) Add dir

NodeB IP3.(2) Add sta

IP6.

4

5





9

1

2

2 3

3 4

1

2

3

4

5

3

4

2

The BTS/NodeB obtains the IP address of the PPP interface from

the gateway during the IPCP negotiation.

Add the ro

address an

The BTS is configured with a device IP address, which is used by

all services. The outbound interface of the BTS is NodeB PPP/MP

interface.

-

2

The ARP agent is not configured for the BTS/NodeB.

Reserved IP Addresses for the BTS/NodeB

Configuration for Remote BTS/NodeB Deployment

t e

route from

the BTS/N

IP address

addresses1

If another r

(1) If the B

VRRP 2 in

(2) Ensure

RT2 so tha

If routes to

6

The BTS/NodeB sends DHCP broadcast packets, attempting to

obtain the IP address and M2000 configurations (including the E1

interface configuration).

VLAN Configurations of the Ethernet Interface on the BTS/NodeB

You are recommended to configure VLANs for the BTS/NodeB,

one VLAN for each interface.

IP Address Configuration for the E1/T1 Interface on the BTS/NodeB IP F

1

If the NodeB uses the E1/T1 interface, the GSM/UMTS network

technology is not supported. The O&M service on the NodeB is

separated from the other services on the NodeB.The router

Multilink Pr

Protocol (I1

The DHCP

forwarded.

Dynamic

1

1 10.22.1.0/24

If multiple

BTS/Node

allowed by

If the BTS/

In Metro Et

router. You

and after th

If one VLA

work in acc

(2) The transmission on the GSM network is separated from that on

the UMTS network. The device IP address IP6 is configured on the

BTS. All services on the BTS use IP6. The interface IP address of

the BTS is IP3.

You are advised not to configure VLANs for the BTS/NodeB by

service flow type.

the next-ho

(1) If VRR

IP address

(2) If the ro

1





2

3

1

2

3

Note1*

Note2

*

Note3

*

If the durati

primary ancaused by

radio servi

interruption

The VRRP

The priorities of static routes are effective on only the routers where the static routes are co

no routing policy is configured, the route between RT1 and the BSC/RNC is equivalent as t

priority may not be used as the primary router.

The route configurations are the same on all interface boards of the BSC/RNC. The Media

board. After the switchover between the active and standby boards, the router updates the

hop interface IP address changes. When the active port is running, the standby port periodi

address to check transmission connectivity (the detection period is 30s).

a dynamic

System (IS

(1) Introdu

the BTS/N

(2) Configu

BFD2 that i

be quickly(3) Introdu

priority is th

1

VRRP preemption delay: The VRRP convergence is faster than the OSPF convergence. If

service data is interrupted due to lack of routes. Therefore, a preemption delay (for exampl

duration is within 3 seconds, and the OSPF convergence duration is about 4 seconds. The

Preemption delay must not be configured on the secondary router. Otherwise, the service i

VRRP trac

If no router

the LSW1

ports), the





Note4

*

VRRP must be configured on RT2 (VRRP secondary router) to track the BFD session betw

becomes primary. The detection period can be shortened to a minimum of 30 ms. The defa

the carrier-grade requirements.





ven-numbered slots on the BSC/RNC connect to routers with a higher priority.

is a high probability that the even-numbered slot on the BSC/RNC is used as the active

Recommended Router Configuration

Figure 3 Network where the RNC connects to routers using the LSW sport

BSC/RNC Side

active and standby routers on the transport network respectively. Normally,s are configured with Virtual Router Redundancy Protocol (VRRP) andork.itch node (OSN) and virtual private LAN service (VPLS) network, as shown in

etwork. The transport network is an end-to-end (E2E) IP bearer network, for

thernet trunk link is provided between the routers, use the LAN switch (LSW)

1 and RT2.

es. In type 2 networking, BTSs/NodeBs can connect to the transport network

IP10

RT1 RT2

VRRPIP19

LSW1 LSW2

RNC

Type 2: The RNC connects to the routers after

converged at LSWs. VRRP heartbeat messages are

transmitted by using the channel between the routers.

IP11 IP13

IP12

IP10

RT1 RT2

VRRPIP19

1 LSW2

RNC

IP11 IP13

IP12

Type 1: The RNC connects to the routers after

converged at LSWs. VRRP heartbeat messages are

transmitted by using the L2 port between the routers.

RT2

M2000

IP601

LSW3

LSW4

DCN

IP92

IP97

IP600

93

IP22

Ethernet Line

E1 Line e IP

Backup Line

STM1 Line





LAN sub-interface is configured for the BSC/RNC:

uter needs to be configured with a VLAN sub-interface and the port connecting the

o the LSW or router works in access VLAN mode, the PVID configuration should be the

e VLAN sub-interface configuration of the router.

AN sub-interface is configured for the router, the VLAN is not configured for the LSW or

ecting to the BSC/RNC.

ub-interface is configured for the BSC/RNC, configure the LSW or router connecting to the

o work in VLAN TRUNK mode and set the VLAN ID of the LSW or router to the VLAN ID of

C (setting the PVID to an idle VLAN ID).

ecommended Route Configuration for Routers on the BSC/RNC Side

P1 in the figure) is configured for interfaces on the active and standby routers RT1 and

cting to the BSC/RNC.

and Figure 2, the BSC/RNC directly connects to routers.

ts on RT1 and RT2 (ports connecting the routers to the BSC/RNC and the port between thet are involved in VRRP1 must be configured with L2 mode and VLAN sub-interfaces and

the same VLAN.

thernet trunk is configured between RT1 and RT2. The bandwidth of the trunk is larger than

total traffic on the BSC/RNC. The trunk uses at least two GE ports for convergence.

heartbeat messages are transmitted by using the L2 Ethernet trunk between the routers.

the BSC/RNC connects to routers by using LSWs.

The router configurations are the same as those in Figure 1 and Figure 2.

The L2 mode is not configured for router ports, and VRRP1 heartbeat messages are

between LSW1 and LSW2.

ended VLAN Configuration for the Transport Network on the BSC/RNC Side

and standby routers on the transport network are added to the static route entries for device

s of the BSC/RNC. The next hop is the IP address of the active interface on the BSC/RNC.

odeB O&M channel does not pass through the BSC/RNC, configure direct routes from

2 to the M2000 and VRRP (For example, VRRP4 in Figure 1 and Figure 2). VRRP4

essages are transmitted using the LSW (for example, LSW3 and LSW4) on the DCN.

hat RT1 serves as the primary router, priorities of VRRP1 and VRRP4 configured for RT1

her than those of VRRP1 and VRRP4 configured for RT2.





Recommended BFD Configuration on Routers

Required Reserved IP Addresses on the Transmission Network

Recommended Route Configuration on the BTS/NodeB

must update the ARP entry after receiving the gratuitous ARP.

l IP address of VRRP can timely respond to ARP REQUEST messages sent every 10

eriod: 100 ms

us mode, passive end

resses used by the transport network cannot conflict with the reserved IP addresses for the

Recommended Clock Server Configuration on Routers

ing to solution 1:

ct routes from the BTS, NodeB, gateway, and routers to NodeB IP1.

ic routes from the BTS, NodeB, gateway, and routers to BTS IP3 and NodeB IP2.

irect routes from the active and standby routers to the master and slave clock servers.

le

r networking, a route policy or active/standby route planes must be configured so that data

e BSC/RNC using RT1.





ing to solution 2:

ct routes from the BTS, NodeB, gateway, and routers to NodeB IP1 and NodeB IP2.

ic routes from the BTS, NodeB, gateway, and routers to NodeB IP3 and BTS IP4.

ing to solution 3:


ic routes from the BTS, NodeB, gateway, and routers to NodeB IP3, NodeB IP4, and BTS

ing to solution 5:

ct routes from the BTS, NodeB, gateway, and routers to NodeB IP1.

ic routes from the BTS, NodeB, gateway, and routers to BTS IP2.

ing to solution 6:



ing to solution 7:

ct routes from the BTS, NodeB, gateway, and routers to NodeB IP1, NodeB IP2, and


ing to solution 8:

ct routes from the BTS, NodeB, gateway, and routers to NodeB IP1, NodeB IP2, NodeB

deB IP4.

ic routes from the BTS, NodeB, gateway, and routers to NodeB IP5 and BTS IP6.

ing to solution 4:

ct routes from the BTS, NodeB, gateway, and routers to NodeB IP1, NodeB IP2, and

ic routes from the BTS, NodeB, gateway, and routers to NodeB IP4, NodeB IP5, and BTS





tes to the E1/T1 interface of the BTS/NodeB: All PPP/MP links can use the same device IP

d share a large network segment on the router side.

Required Reserved IP Addresses on the Transmission Network

a ress s erent rom t e nter ace a ress on t e o e , con gure t e ost

T3 (RT3 connects to the BTS/NodeB through the E1 interface) to the O&M IP address of

deB.

s of all interfaces and sub-interfaces on routers cannot conflict with the reserved IP

or the BTS/NodeB: 10.22.1.0/24.

uter exists between RT1 and RT2 or the transmission bearer network is IP bearer network

S/NodeB is configured with two routers (see Figure 1), configure VRRP (for example,

Figure 1) on the interfaces of the routers connecting to the BTS/NodeB.

that the priority of VRRP2 configured on RT1 is higher than that of VRRP2 configured on

RT1 serves as the primary router.

the BTS exist, you need to add the static routes to the BTS.

Recommended VLAN Configurations on the Transmission Network

nctions of the E1/T1 Interface Connecting the BTS/NodeB with the Router

(RT3) supports the function of assigning the interface IP address for the BTS/NodeB on the

otocol (MP)/Point-to-Point Protocol (PPP) interface through Internet Protocol Control

CP).

Relay is required to relay only DHCP broadcast packets. DHCP unicast packets are directly

Host Configuration Protocol (DHCP) Relay of Routers on the BTS/NodeB Side

LANs are configured for the BTS/NodeB, set the LSW that directly connects to the

to work in VLAN TRUNK mode, add VLAN IDs of the BTS/NodeB to the list of VLAN IDs

the port, and set the PVID to an idle VLAN ID.

odeB directly connects to routers, no VLAN is configured for router interfaces.

hernet networking, the VLAN ID conversion is allowed between the BTS/NodeB and the

must ensure that the VLAN ID of the BTS/NodeB maps the VLAN ID of the router before

e conversion.

is configured for the BTS/NodeB, set the LSW that directly connects to the BTS/NodeB to

ess mode and set the PVID to be consistent with the VLAN ID of the BTS/NodeB.

Route Configuration Between Routers

- - ,

p router of the BTS/NodeB.

is configured for the next-hop gateway, the DHCP Relay must be configured at the virtual

of VRRP.

uter connects to the E1 interface of the BTS/NodeB, the DHCP Relay must be configured





on of route convergence on the intermediate network caused by the switchover between the

secondary routes to the BSC on RT1/RT2 is larger than 3s, the duration of switchoverhe route fault on the BSC side is larger than 3s. This does not meet the requirements of

es. You can configure BFD for IP fast reroute (FRR) on RT1/RT2 to enable the service

time during the switchover to be reduced to several milliseconds.

policy must ensure that the router of a lower priority immediately performs preemption.

nfigured and cannot be transmitted to other routers by using the dynamic route protocol. If

e route between RT2 and the BSC/RNC from the RT3 perspective. The router of a higher

ccess Control (MAC) address of the active board is different from that of the standby

RP entry after receiving the gratuitous ARP. The MAC address corresponding to the next-

cally performs the ARP detection on the virtual IP address of VRRP1 based on another IP

,

oute protocol (Open Shortest Path First (OSPF) or Intermediate System to Intermediate

IS)) must be configured between routers.

e the dynamic route protocol to the direct and static routes to the BSC/RNC and routers on

deB side.

re BFD1 that is bound to the static route from RT1 to the BSC/RNC on RT1, and configure

s bound to the static route from RT2 to the BSC/RNC on RT2 so that the route status can

pread to other routers and the BTS/NodeB uplink data is sent to the destination router. e the route priority policy into the dynamic route protocol to ensure that the route of a higher

e primary transmission path. (see note 2)

he VRRP preempts the primary router immediately after the primary router restarts, the

, 10 seconds) must be configured on the VRRP primary router. The VRRP convergence

secondary router is configured to work in immediate preemption mode by default.

terruption duration is increased.

s BFD sessions (see note 4).

VRRP Policy Configuration on the Router

exists between RT1 and RT2 and the routers are configured with VRRP1 to track links on

ide (or the routers are configured with VRRP2 and interconnect with the active and standby

ynamic or static route protocol does not need to be configured between RT1 and RT2.





en the routers. If the BFD session detects faults, the secondary router is switched over and

ult VRRP detection period is 3 seconds (1 second x 3 = 3 seconds), which does not meet





1

3

2


Add stat

Configu

same n

of RT1

Recomm

1

1

The inte

configur

2

Route Configuration for the BSC/RNC

The BSC/RNC is configured with the active and standby Abis/Iub

transmission boards, which directly connect to the active and standby routers,

respectively. Figure 1 and Figure 2 show the possible networking solutions

(applicable to pool or non-pooled networking of boards on the BSC/RNC).

The service IP addresses and interface IP addresses of interface boards on

the BSC/RNC are on different network segments. In Figure 1 and Figure 2,

IP210 and IP220 are service IP addresses; IP11 and IP21 are interface IP

addresses.

The BSC/RNC is not configured with VLAN sub-interfaces.

The BTS/NodeB data is divided into two groups. One group of BTS/NodeB

data is configured on the active transmission interface board, and the other

group of BTS/NodeB data is configured on the standby transmission interface

board. Configure source IP-based policy-based routing to implement route

Rec

Connection Configuration and VLAN Configuration of the BSC/RNC

Dual-Router Load-Sharing Networking on the BSC/

1. The BSC/RNC is configured with the active and standby interface boards, which connect to the primaBTSs/NodeBs connected to the BSC/RNC are divided into two groups. Data of BTSs/NodeBs in differenBSC/RNC and is forwarded by different routers to implement load-sharing. In addition, alternative routes

(1) Networking type 1: The transmission network is a Metro Ethernet. For example, optical switcFigure 1.

(2) Networking type 2: RT1 and RT2 are expanded to an IP bearer network. The transport netw2. The BSC/RNC, IP clock server, and data communication network (DCN) directly connect to RT1 and

3. In type 1 networking, BTSs/NodeBs connect to the transport network through Ethernet interfaces. In tthe Ethernet or E1/T1 interfaces.

LSW1LSW2

VRRP1

IP119

VRRP2

IP129

IP500 IP501OSPF

IP110 IP112 IP120 IP122

Metro Ethernet

RNC

RT2RT1

INT

IP70

M IPCLK

IP71

S IPCLK

IP81

M2000

IP600

LSW3

IP91

OMU

LSW4

DCN

IP90 IP92

IP11IP21

IP20

IP80

IP97

IP601

INT

IP41

IP10

IP30

IP31

IP40





IPXX

IP××

Logical IPE1T1 Port

ST 1 Port Backup Line

STM1 Line

IP210

IP220

IP98IP230

IP240

POOL1

POOL2

NodeBGBTS

GTMU UMPTIP161 IP151

IP111

NodeBGBTS


IP121

R

I

M IPCLK

IP71

S I

I

Active E

Standby

E1T1 Port

ST 1 Port





1 1

2 2

3 3

1 1

2

1

2

Asynchr

Detectio

3

Echo: D

The interface IP address is recommended to be different from the device IPaddress for the GSM/UMTS dual-mode base station, BTS, or NodeB.

Configu

and Fig

(1) The

configur

routes f

the next

(2) The

configur

routes f

the next

The BF

the RT1

RT2, th

After de

the rout

forward

4

5

Default detection period: 100 ms

Echo: Disable

Authentication mode: Authentication not supportedRange of Reserved IP Addresses for the BSC/RNC R

Configu

clock se

On the GSM/UMTS network, it is recommended that the NodeB provides the

outbound transmission interface, that the interface IP address is configured

on the NodeB transmission board, and that the BTS connects to the NodeB

using the backplane tunnel.

o u on :

1 1The IP

address

configuration for the BTS/NodeB, and configure redundant routes.

The route configuration in the non-pooled networking scenario is as follows:

(1) The high-priority routes for the data with the destination IP address of

IP151 are configured on the active transmission interface board, and the next-

hop IP address of the route is IP10. The low-priority routes for the data with

the destination IP address of IP151 are configured on the standby

transmission interface board, and the next-hop IP address of the route is

IP20.(2) The high-priority routes for the data with the destination IP address of

IP111 are configured on the standby transmission interface board, and the

next-hop IP address of the route is IP20. The low-priority routes for the data

with the destination IP address of IP111 are configured on the active

transmission interface board, and next-hop IP address of the route is IP10.

In the pooled networking scenario, the primary and secondary routes are

configured on the basis of the source IP address.

The conditions for switchover between the active and standby boards on the

BSC/RNC are as follows:

(1) The Bidirectional Forwarding Detection (BFD) is enabled on the active and

standby transmission interface boards of the BSC/RNC and the routers

directly connect to the boards. If the BFD detects faults on a board, the

BSC/RNC deactivates all routes configured on the board and uses thesecondary route.

(2) If the routers do not support BFD, the primary/secondary route switchover

based on the physical port status is recommended to be configured for the

BSC/RNC.

(3) The Address Resolution Protocol (ARP) detection cannot be used by the

route switchover on the RT1/RT2 and cannot ensure reliability. Therefore, the

ARP detection is not recommended to be configured on the BSC/RNC.

BFD Configuration on the BSC/RNC

2

1

192.168.0.0/16

Clock Server ConfigurationThe BTS/NodeB obtains the clock from the IP clock server in 1588v2 unicast

packet transmission mode by default.

The master and slave clock servers are configured. They directly connect to

the active and standby routers RT1 and RT2 to implement redundancy

protection. The VLAN is not configured.

IP Address Configurations for the Ethernet Interface on the BTS/NodeB





4 2

8 6

9 7

o ut on : e serv ce on t e o e s separate rom t e ot er

services on the NodeB. The transmission on the GSM network is separatedfrom that on the UMTS network.

(1) The interface IP addresses IP1, IP2, and IP3 and the device IP addresses

IP4 and IP5 are configured on the NodeB. The OM service on the NodeB

uses IP4. The other services on the NodeB use IP5. IP4 corresponds to IP1,

and IP5 corresponds to IP2.

(2) The device IP address IP6 is configured on the BTS. All services on the

BTS use IP6. The interface IP address of the BTS is IP3.

Solution 5:

(1) The interface IP address IP1 is configured on the NodeB. All services on

the NodeB use IP1.

(2) The transmission on the GSM network is not separated from that on the

UMTS network. The device IP address IP2 is configured on the BTS. All

services on the BTS use IP2. The interface IP address of the BTS is IP1.

Solution 7:

(1) The interface IP addresses IP1 and IP2 and the device IP address IP3 are

configured on the NodeB. IP3 is on the same network segment as IP1. All


(2) The transmission on the GSM network is not separated from that on the



Solution 8:

(1) The interface IP addresses IP1, IP2, and IP3 and the device IP addresses

IP4 and IP5 are configured on the NodeB. IP4, which is on the same network

3

on the NodeB. All services on the NodeB use IP2.


BTS use IP3. Both the transmission on the GSM network and the

transmission on the UMTS network use the interface IP address IP1.

Solution 2:

(1) The interface IP addresses IP1 and IP2 and the device IP address IP3 are

configured on the NodeB. All services on the NodeB use IP3. The interface IP

address of the NodeB is IP1.


BTS use IP4. The transmission on the GSM network is separated from that on

the UMTS network. The interface IP address of the BTS is IP2.

(1) The interface IP addresses IP1 and IP2 and the device IP addresses IP3

and IP4 are configured on the NodeB. The OM service on the NodeB uses

IP3. The other services on the NodeB use IP4. IP3 corresponds to IP1, and

IP4 corresponds to IP2.


BTS use IP5. The interface IP address of the BTS is IP2.

Corresp

(1) Add

(2) Add

Corresp

(1) Add

NodeB I

(2) Add

Corresp

(1) Add

IP2, and

(2) Add

Corresp

(1) Add

6 4

7 5

3 1

5

Solution 6:

(1) The interface IP addresses IP1 and IP2 are configured on the NodeB. All



BTS use IP3. The interface IP address of the BTS is NodeB IP1.

(1) Add

(2) Add

NodeB I

Corresp(1) Add

NodeB I

(2) Add

BTS IP

Corresp

(1) Add

NodeB I

(2) Add

IP4, and

Corresp

(1) Add

IP2, and

(2) Add

IP5, and





9

1 1

2 2

3 3

4

1 1

2 2

3 3

4

5

6

1 1

1

2

, .

use IP5. The interface IP address of the NodeB is IP2.

(2) The transmission on the GSM network is separated from that on the



1

4

IP addr

reserve

be enab(1) If VR

configur

The DH

packets

If routes

IP2, No

(2) Add

BTS IP

(1) If the

examplBTS/No

(2) Ens

configur

Configurations for Remote BTS/NodeB Deployment

10

The BTS/NodeB sends DHCP broadcast packets, attempting to obtain the IP

address and M2000 configurations (including the E1 interface configuration).

8

VLAN Configuration of the Ethernet Interface on the BTS/NodeB

You are advised to configure VLANs for the BTS/NodeB, one VLAN for each

interface.If one V

The default route outbound interface of the BTS/NodeB is PPP interface.

You are not advised to configure VLANs for a single-mode base station that

directly connects to routers.

You are not advised to configure VLANs for the BTS/NodeB based on the

traffic type.

If the NodeB uses the E1/T1 interface, the GSM/UMTS network technology is

not supported. The OM service on the NodeB is separated from the other

services on the NodeB.

The BTS/NodeB obtains the IP address of the PPP interface from the

gateway during the IPCP negotiation.

The interface IP address and OM IP address of the BTS/NodeB can be on the

same network segment or different network segments.


The BTS is configured with a device IP address, which is used by all services.

The outbound interface of the BTS is NodeB PPP/MP interface.

10.22.1.0/24

IP Address Configurations for the E1/T1 Interface on the BTS/NodeB

Reserved IP Addresses for the BTS/NodeB

bearer n

Re

IP Functi

R

Dynamic Hos

If multip

to the B

the list o

If the B

interfac

In MetroBTS/No

the VLA

The rou

BTS/No

through

Add the

same d

If the O

configur

interfac





2

1

2

3

The priorities of static routes are effective on only the routers where t

using the dynamic route protocol. If no routing policy is configured, th

RT2 and the BSC/RNC from the RT3 perspective. The router of a hi

VRRP preemption delay: The VRRP convergence is faster than the

the primary router restarts, the service data is interrupted due to lack

configured on the VRRP primary router. (The VRRP convergence du

seconds.) The secondary router is configured to work in immediate psecondary router. Otherwise, the service interruption duration is incre

The VR

with a d

VRRP t

VRRP must be configured on RT2 (VRRP secondary router) to track

secondary router is switched over and becomes primary. The detecti

detection period is 3 seconds (1 second x 3 = 3 seconds), which doe

Note1*

Note2*

Note3*

1

Interme

routers.

(1) Intro

and rout

(2) Con

RT1, an

on RT2

BTS/No

(3) Intro

route of

If the du

switcho

than 3s,

than 3s,

BFD for

the swit





Figure 2 IP bearer transport network

ic routes from RT1 and RT2 to the BSC/RNC and configure redundant routes.

re the IP addresses of the router ports connecting to the BSC/RNC to be on the

twork segment as the interface IP address of the BSC/RNC. For example, IP10

nd IP20 of RT2.

ended Connection Configuration and VLAN Configuration for Routers

rfaces on the routers that are used to connect to the BSC/RNC are not

ed with VLAN sub-interfaces and VLAN.

mmended Route Configuration for Routers on the BSC/RNC Side

NC Side

ry and secondary routers on the transport network, respectively. All thet groups is configured on different transmission interface boards of theare configured for the BSC/RNC and routers to ensure reliability.

h node (OSN) and virtual private LAN service (VPLS) network, as shown in

rk is an IP bearer network, for example, ATN, as shown in Figure 2.RT2.

ype 2 networking, BTSs/NodeBs can connect to the transport network through

RNC

RT2

IP210IP220

1

RT3

IP119

LSW1

INT

IP70

IPCLK

81

M2000

IP600

LSW3

IP98

IP91

OMU

LSW4

DCN

IP90 IP92

IP11 IP21

IP20

IP80

IP97

IP601

IP BEARER

INT

IP41

IP230IP240

IP10

IP30

IP31

IP40

POOL

IPXXthernet Port

Ethernet Port



IPXX

IP××

Logical IP t

t Backup Line

STM1 Line

RT3

NodeBGBTS


IP111





onous mode, passive end

n period: 100 ms

isable

re static routes from RT1 and RT2 to the BSC/RNC. For example, in Figure 1

re 2:

high-priority routes for the data with the destination IP address of IP210 are

ed on RT1, and the next-hop IP address of the route is IP11. The low-priority

r the data with the destination IP address of IP210 are configured on RT2, and

-hop IP address of the route is IP21.

high-priority routes for the data with the destination IP address of IP220 are

ed on RT2, and the next-hop IP address of the route is IP21. The low-priority

r the data with the destination IP address of IP220 are configured on RT1, and

-hop IP address of the route is IP11.

must be configured for static routes from RT1 and RT2 to the BSC/RNC. On

, the local IP address of BFD is IP10, and the peer IP address is IP11. On the

local IP address of BFD is IP20, and the peer IP address is IP21.

tecting that the BFD bound to the BSC/RNC port fails, the router deactivates

es bound with the port. After the route between routers is updated, data is

d by the secondary router.

equired Reserved IP Addresses on the Transmission Network

Recommended Clock Server Configuration on Routersre direct routes from the active and standby routers to the active and standby

rvers.

Recommended Route Configurations on the BTS/NodeB

ddresses used by the transmission network cannot conflict with the reserved IP

es for the BSC/RNC.

Recommended BFD Configuration on Routers





onding to solution 5:

direct routes from the BTS, NodeB, gateway, and routers to NodeB IP1.

static routes from the BTS, NodeB, gateway, and routers to BTS IP2.


direct routes from the BTS, NodeB, gateway, and routers to NodeB IP1 and

P2.



direct routes from the BTS, NodeB, gateway, and routers to NodeB IP1, NodeB

NodeB IP3.




direct routes from the BTS, NodeB, gateway, and routers to NodeB IP1.

static routes from the BTS, NodeB, gateway, and routers to BTS IP3 and

P2.

onding to solution 2: direct routes from the BTS, NodeB, gateway, and routers to NodeB IP1 and

P2.

static routes from the BTS, NodeB, gateway, and routers to NodeB IP3 and

.


direct routes from the BTS, NodeB, gateway, and routers to NodeB IP1 and

P2.

static routes from the BTS, NodeB, gateway, and routers to NodeB IP3, NodeB

BTS IP5.



NodeB IP3.

static routes from the BTS, NodeB, gateway, and routers to NodeB IP4, NodeB

BTS IP6.





sses of all interfaces and sub-interfaces on routers cannot conflict with the

IP addresses for the BTS/NodeB: 10.22.1.0/24.

- - ,

led on the next-hop router of the BTS/NodeB. RP is configured for the next-hop gateway, the DHCP Relay must be

ed at the virtual IP address of VRRP.

CP Relay is required to relay only DHCP broadcast packets. DHCP unicast

are directly forwarded.

to the BTS exist, you need to add the static routes to the BTS.

eB IP3, and NodeB IP4.

static routes from the BTS, NodeB, gateway, and routers to NodeB IP5 and

.

BTS/NodeB is configured with two routers (see Figure 1), configure VRRP (for

, VRRP 2 in Figure 1) on the interfaces of the routers connecting to thedeB.

re that the priority of VRRP2 configured on RT1 is higher than that of VRRP2

ed on RT2 so that RT1 serves as the primary router.

LAN is configured for the BTS/NodeB, set the LSW that directly connects to the

etwork, a dynamic route protocol (Open Shortest Path First (OSPF) or

commended VLAN Configuration on the Transmission Network

ons of the E1/T1 Interface Connecting the BTS/NodeB with the Router

equired Reserved IP Addresses on the Transmission Network

t Configuration Protocol (DHCP) Relay of Routers on the BTS/NodeB Side

Configuration of Dynamic Routes Between Routers

le VLANs are configured for the BTS/NodeB, set the LSW that directly connects

TS/NodeB to work in VLAN TRUNK mode, add VLAN IDs of the BTS/NodeB to

f VLAN IDs allowed by the port, and set the PVID to an idle VLAN ID.

S/NodeB directly connects to routers, no VLAN is configured for router

s.

Ethernet networking, the VLAN ID conversion is allowed between thedeB and the router. You must ensure that the VLAN ID of the BTS/NodeB maps

N ID of the router before and after the conversion.

ter (RT3) supports the function of assigning the interface IP address for the

deB on the Multilink Protocol (MP)/Point-to-Point Protocol (PPP) interface

Internet Protocol Control Protocol (IPCP).

routes to the E1/T1 interface of the BTS/NodeB: All PPP/MP links can use the

vice IP address and share a large network segment on the router side.

IP address is different from the interface IP address on the BTS/NodeB,

e the host route from RT3 (RT3 connects to the BTS/NodeB through the E1

) to the OM IP address of the BTS/NodeB.





he static routes are configured and cannot be transmitted to other routers by

e route between RT1 and the BSC/RNC is equivalent as the route between

her priority may not be used as the primary router.

SPF convergence. If the VRRP preempts the primary router immediately after

of routes. Therefore, a preemption delay (for example, 10 seconds) must be

ration is within 3 seconds, and the OSPF convergence duration is about 4

reemption mode by default. Preemption delay must not be configured on theased.

RP policy must ensure that the router of a higher priority implements preemption

elay of 10 seconds (see note 2).

acks BFD sessions (see note 3).

the BFD session between the routers. If the BFD session detects faults, the

on period can be shortened to a minimum of 30 ms. The default VRRP

s not meet the carrier-grade requirements.

diate System to Intermediate System (IS-IS) must be configured between

duce the dynamic route protocol to the direct and static routes to the BSC/RNC

ers on the BTS/NodeB side.

igure BFD1 that is bound with the static route from RT1 to the BSC/RNC on

d configure BFD2 that is bound with the static route from RT2 to the BSC/RNC

so that the route status can be quickly spread to other routers and the

deB uplink data is sent to the destination router.

duce the route priority policy into the dynamic route protocol to ensure that the

a higher priority is the primary transmission path. *Note1

ration of route convergence on the intermediate network caused by the

er between the primary and secondary routes to the BSC on RT1/RT2 is larger

the duration of switchover caused by the route fault on the BSC side is larger

which does not meet the requirements of radio services. You can configure

IP fast reroute (FRR) on RT1/RT2 to enable the service interruption time during

hover to be reduced to several milliseconds.

VRRP Policy Configuration on the Router






The interface board in1

VLAN Configuration of the Abis/Iub Interface on the BSC/RNC Recommended VL

BSC/RNC Transmission Configuration

1

The active and standby ports on the active and standby interface

boards of the BSC/RNC connect to the two ports of a router. In

normal cases, all data is transmitted and received through the

active port. There is a high probability that the even-numbered slot

on the BSC/RNC is used as the active port.

Single-Router Networking on the BSC/RNC Side

1. The BSC/RNC, IP clock server, and data communication network (DCN) directly connect to RT1(1) Networking type 1: The transport network is a Metro Ethernet. For example, optical switFigure 1.(2) Networking type 2: RT1 and RT2 are expanded to an IP bearer network. The transport

2. The BSC/RNC, IP clock server, and DCN directly connect to RT1.

3. In networking type 1, GBTSs/NodeBs connect to the transport network through Ethernet interfacnetwork through Ethernet interfaces or E1/T1 interfaces.

IP70

M IPCLK

IP71

S IPCLK

IP81

IP80

IP BE

RT1

Active Ethernet Port


E1T1 Port

STM1 Port

IP200POOL

IN

IPIP11

IP1

GBTS

GTMUIP161

I

RNC M2000

IP600

LSW3

IP98

IP91

OMU

LSW4

DCNIP97

IP601

IP90

IP70

IP71

S IPCLK

IP81

IP80

Metro Ethernet

RT1

IP119

IP93





IPXX

IP××

Logical IPE1T1 Port

STM1 Port Backup LineSTM1 Line

IP200 IP210

INT

POOL

INT

IP29

IP13IP11 IP23

IP21

IP19

NodeBGBTS

GTMU UMPT

IP161 IP151

IP111





1

2

4 2

8 6

7

Solution 5:

(1) The interface IP address IP1 is configured on the NodeB. All






5

Corresponding to solut

(1) Add direct routes fr

(2) Add static routes fr

Solution 6:

(1) The interface IP addresses IP1 and IP2 are configured on the

NodeB. All services on the NodeB use IP1.



is NodeB IP1.




5

Solution 3:







is IP2.

3




6

other services on the NodeB. The transmission on the GSMnetwork is separated from that on the UMTS network.





4



IP3.


It is recommended that the interface IP address be different from

the device IP address for the GSM/UMTS dual-mode base station,

BTS, or NodeB. ,

provide a port for transport network connection and that the

interface IP address be configured on the NodeB transmission

board. The BTS connects to the NodeB using the backplane

3

Solution 1:

(1) The interface IP address IP1 and the device IP address IP2 are

configured on the NodeB. All services on the NodeB use IP2.


services on the BTS use IP3. Both the transmission on the GSM

network and the transmission on the UMTS network use the

1




Solution 2:


address IP3 are configured on the NodeB. All services on the

NodeB use IP3. The interface IP address of the NodeB is IP1.


services on the BTS use IP4. The transmission on the GSM

network is separated from that on the UMTS network. The interfaceIP address of the BTS is IP2.








9 7

8

9

1

2

2 3

3 4

1

2

3

4

5

3

4

Reserved IP Addresses for the BTS/NodeB Requi

Add the routes to the E

address and share a laThe default route outbound interface of the BTS/NodeB is PPP

interface.


6

The BTS is configured with a device IP address, which is used by

all services. The outbound interface of the BTS is NodeB PPP/MP

interface.

e a ress s

from RT3 (RT3 connec

BTS/NodeB.If routes to the BTS exi

n etro t ernet netw

You must ensure that tconversion.

IP Address Configurations for the E1/T1 Interface on the BTS/NodeB IP Functions

If the NodeB uses the E1/T1 interface, the GSM/UMTS network

technology is not supported. The OM service on the NodeB is

separated from the other services on the NodeB.1

The router (RT3) supp

Multilink Protocol (MP)The BTS/NodeB obtains the IP address of the PPP interface from

the gateway during the IPCP negotiation.

The interface IP address and OM IP address of the BTS/NodeB

can be on the same network segment or different network

segments.

2

VLAN Configurations of the Ethernet Interface on the BTS/NodeB Recom

1

You are recommended to configure VLANs for the BTS/NodeB,

one VLAN for each interface.

If one VLAN is configu

work in access mode a

If multiple VLANs are c

to work in VLAN TRUN

port, and set the PVID

You are advised not to configure VLANs for a single-mode base

station that directly connects to the router.If the BTS/NodeB dire

You are advised not to configure VLANs for the BTS/NodeB by

service flow type.

10

Solution 8:


addresses IP4 and IP5 are configured on the NodeB. IP4, which is

on the same network segment as IP1, is used by the OM service.

The other services on the NodeB use IP5. The interface IP address

of the NodeB is IP2.

(2) The transmission on the GSM network is separated from that on

the UMTS network. The device IP address IP6 is configured on the

BTS. All services on the BTS use IP6. The interface IP address of

the BTS is IP3.



and NodeB IP4.


(1) If the BTS/NodeB i

in Figure 1) on the inte

(2) Ensure that the prio

so that RT1 serves as

Solution 7:


address IP3 are configured on the NodeB. IP3 is on the same

network segment as IP1. All services on the NodeB use IP3.



on the BTS. All services on the BTS use IP4. The interface IPaddress of the BTS is IP2.



IP3.






2

Note1

1 10.22.1.0/24 1IP addresses of all inte

addresses for the BTS

The route configurations are the same on all the transmission interface boards of the BSC/RNC.the standby board. After the switchover between the active and standby boards, the router update

corresponding to the next-hop interface IP address changes. When the active port is running, the

VRRP1 based on another IP address to check the transmission connectivity (the detection period

1If the transmission bea

First (OSPF) or Interm

Configuration for Remote BTS/NodeB Deployment Dynamic Host Con

1

The BTS/NodeB sends DHCP broadcast packets, attempting to

obtain the IP address and M2000 configurations (including the E1

interface configuration).

1

During Plug-and-Play (

next-hop router of the

(1) If VRRP is configur

address of VRRP.

(2) If the router connec

the MP/PPP interface.

The DHCP Relay is re

forwarded.





Figure 2 IP bearer transport network

the even-numbered slot of the BSC/RNC connects to the active port of the router.

AN Configuration for the Transmission Network on the BSC/RNC Side

Recommended Router Configuration

. BTSs/NodeBs connect to the Ethernet through an Ethernet interface.ch node (OSN) and virtual private LAN service (VPLS) network, as shown in

etwork is an IP bearer network, for example, ATN, as shown in Figure 2.

es. In networking type 2, BTSs/NodeBs can connect to the transmission

RNC

LSW1

M2000

IP600

LSW3

IP98

IP91

OMU

LSW4

DCNIP97

IP601

IP90

ARER

IP119

IP93

IPXX Service IP Ethernet Line

E1 Line

VLAN Interface IPIPXX

IP××

Logical IP Backup LineSTM1 Line

IP210

INT

IP29

13 IP23

IP21

9

NodeB

UMPT

IP151

P111





m RT1 to the BSC/RNC.

commended Route Configuration on the BTS/NodeB

from the active and standby routers to the master and slave clock servers.

s

red Reserved IP Addresses on the Transmission Network

by the transmission network cannot conflict with the reserved IP addresses for the

assive end

ded Route Configuration for the Router on the BSC/RNC Side

T1 that connect RT1 with the BSC/RNC must be configured with L2 mode and

d must share the same VLAN.

ort on the router that is used to connect to the BTS/RNC must be on the same

e interface IP addresses of the active and standby interface boards on the

e, IP19 of RT1 in Figure 1 and Figure 2.

commended Clock Server Configuration on the Router

outer connecting to the BSC/RNC are configured on different interface boards. The

ork in L2 switching mode and belong to the same VLAN. The physical ports

RNC must be configured in VLAN access mode. The BSC/RNC is not configured

Recommended BFD Configurations on the Router





ion 5:

om the BTS, NodeB, gateway, and router to NodeB IP1.

m the BTS, NodeB, gateway, and router to BTS IP2.

ion 6:

om the BTS, NodeB, gateway, and router to NodeB IP1 and NodeB IP2.


ion 3:


m the BTS, NodeB, gateway, and router to NodeB IP3, NodeB IP4, and BTS IP5.

ion 4:

om the BTS, NodeB, gateway, and router to NodeB IP1, NodeB IP2, and NodeB

m the BTS, NodeB, gateway, and router to NodeB IP4, NodeB IP5, and BTS IP6.

ion 1:

om the BTS, NodeB, gateway, and router to NodeB IP1.

m the BTS, NodeB, gateway, and router to BTS IP3 and NodeB IP2.

ion 2:


m the BTS, NodeB, gateway, and router to NodeB IP3 and BTS IP4.





red Reserved IP Addresses on the Transmission Network

1/T1 interface of the BTS/NodeB: All PPP/MP links can use the same device IP

rge network segment on the router side.

eren rom e n er ace a ress on e o e , con gure e os rou e

ts to the BTS/NodeB through the E1 interface) to the OM IP address of the

ist, you need to add the static routes to the BTS.

or ng, t e convers on s a owe etween t e o e an t e router.

he VLAN ID of the BTS/NodeB maps the VLAN ID of the router before and after the

f the E1/T1 Interface Connecting the BTS/NodeB with the Router

rts the function of assigning the interface IP address for the BTS/NodeB on the

/PPP interface.

ended VLAN Configurations on the Transmission Network

red for the BTS/NodeB, set the LSW that directly connects to the BTS/NodeB to

nd set the PVID to be consistent with the VLAN ID of the BTS/NodeB.

onfigured for the BTS/NodeB, set the LSW that directly connects to the BTS/NodeB

K mode, add VLAN IDs of the BTS/NodeB to the list of VLAN IDs allowed by the

to an idle VLAN ID.

tly connects to the router, no VLAN is configured for router interfaces.

ion 8:

om the BTS, NodeB, gateway, and router to NodeB IP1, NodeB IP2, NodeB IP3,

m the BTS, NodeB, gateway, and router to NodeB IP5 and BTS IP6.

configured with two routers (see Figure 1), configure VRRP (for example, VRRP 2

rfaces of the routers connecting to the BTS/NodeB.

rity of VRRP2 configured on RT1 is higher than that of VRRP2 configured on RT2

the primary router.

ion 7:

om the BTS, NodeB, gateway, and router to NodeB IP1, NodeB IP2, and NodeB






rfaces and sub-interfaces on the router cannot conflict with the reserved IP

NodeB: 10.22.1.0/24.

he Media Access Control (MAC) address of the active board is different from that ofs the ARP entry after receiving the gratuitous ARP. The MAC address

standby port periodically conducts the ARP detection on the virtual IP address of

is 30s).

Route Configurations Between Routers

rer network is IP bearer network, a dynamic route protocol (Open Shortest Path

diate System to Intermediate System (IS-IS)) must be configured between routers.

iguration Protocol (DHCP) Relay of the Router on the BTS/NodeB Side

PnP) BTS/NodeB deployment, the DHCP Relay function must be enabled on the

TS/NodeB.

ed for the next-hop gateway, the DHCP Relay must be configured at the virtual IP

ts to the E1 interface of the BTS/NodeB, the DHCP Relay must be configured on

uired to relay only DHCP broadcast packets. DHCP unicast packets are directly





E1 Delay inMultilink PPP

Mode (ms)

Maximum

Value

Expected

Value

Maximum

Value

Maximum

Value

Expected

Value

Iub interface

(common)40 10

101.00E-06 1.00E-07

Iub interface

(satellite

transmission)

350 300

10

1.00E-07 1.00E-08

MaximumValue

ExpectedValue

MaximumValue

ExpectedValue

MaximumValue

Iub interface

(common)40 10 15 2 1.00E-03

Iub interface

(satellite

transmission)

1.00E-03

Maximum

Value

Expected

Value

Maximum

Value

Expected

Value

Maximum

Value

Abis interface

(common) 40 15 15 8 1.00E-03 Abis interface

(satellite

transmission)

350 300 40 20

Notes:

Service Type PHB DSCP VLAN PriQueue on

BSC

Iub Signal CS6 48 6 0

CCH&SRB&AMR EF 46 5 0

Conversational&

streaming AF41 34 4 1

R99 interactive&

background AF21 18 2 3

Transmission QoS Requirements for the Iub/Abis Interface

In IP over E1 mode, the quality of service (QoS) requirements of the UMTS network for the

intermediate network are as follows:

One-Way Delay (ms) Bit Error Rate (BER)

1. The maximum values indicate the basic commercial requirements for deploying radio serv

QoS Requirements of the GSM and UMTS Networks for the Transport Network

In IP over Ethernet mode, the QoS requirements of the UMTS network for the intermediate

One-Way Delay (ms) Jitter (ms) Packet Loss Ra

Bidirectional 600 Bidirectional 50

n over erne mo e, e o requ remen s o e ne wor or e n erme a e

follows:One-Way Delay (ms) Jitter (ms) Packet Loss Ra

5.00E-04

2. The expected values indicate the requirements on the transport network when customers

3. These QoS requirements are inapplicable to satellite bearers.

Default Service Priority Mapping for the Iub Interface





HSxPA

interactive&

background

AF11 10 1 4

NodeB OM High EF 46 5 0

NodeB OM Low AF21 18 2 3

IP clock EF 46 5 0

Network

Technology

GSM

UMTS

SRAN

Network TechnoPriority Configurations of the Intermediate Network

QoS Requirements of the Radio Network for Queue Configurations on the Transport

Network (Note1)

Recommended solution: You do not need to modify the default QoS mechanism on the radio network. The in

devices generally support the basic QoS mechanism: L3 supports eight priority queues (CS7/CS6/EF/AF4/A

The basic QoS mechanism meets the priority requirements of the radio bearer networks.

Priority Configurations of the Intermediate Network

ata w t t e erent ate serv ces co e po nts s o , , , , an or w t

ueues.Data with the DSCPs of 48, 46, 34, 18, and 10 or with the VLAN priorities of 6, 5, 4, 2, and 1

Data with the DSCPs of 48, 46, 34, 26, 18, and 10 or with the VLAN priorities of 6, 5, 4, 3, 2,

Alternative solution: You do not need to modify the default configurations on radio network devices. The map

configured on the intermediate network needs to be adjusted. The mapping between the DSCP/VLAN priority

SRAN

The four priority queues are mapped onto the DSCP (48+46)/34/26/(18+10) or VLAN priority

The three priority queues are mapped onto the DSCP (48+46)/(34+26)/(18+10) or VLAN pri

The two priority queues are mapped onto the DSCP (48+46+34+26)/(18+10) or VLAN priorit

Note 1: It is recommended that DSCPs be not combined on the radio network side.

Note 2: On the SRAN, the low-priority packet switched (PS) services on the GSM network are combined to hiaccess (HSPA) services on the UMTS network.

Principle: The queue combination indicates the combination of high-priority queues and the combination of lo

GSM

The four priority queues are mapped onto the DSCP (48+46)/34/26/18 or VLAN priority (6+5

The three priority queues are mapped onto the DSCP (48+46)/34/(26+18) or VLAN priority (

The two priority queues are mapped onto the DSCP (48+46)/(34+26+18) or VLAN priority (6

UMTS

The three priority queues are mapped onto the DSCP (48+46+34)/18/10 or VLAN priority (6

The two priority queues are mapped onto the DSCP (48+46+34)/(18+10) or VLAN priority (6





E1 Delayin Multilink

PPP

Maximum

Value

Expected

Value

Maximum

Value

Maximum

Value

Expected

Value

Abis interface

(common)40 15

101.00E-06 1.00E-07

Abis interface

(satellite

transmission)

350 300

10

1.00E-07 1.00E-08

ExpectedValue

1.00E-04

1.00E-04

Expected

Value

5.00E-04

Service Type PHB DSCP VLAN PriQueue on

BSC

ESL/ OML/RSL CS6 48 6 0

CS Voice EF 46 5 0

CS Data/ PS

High PRI

AF41 34 4 1

PS low PRI AF31 26 3 2

In IP over E1 mode, the QoS requirements of the GSM network for the

intermediate network are as follows:

One-Way Delay (ms) BER

ices.

etwork are as

tio

ne wor are as

tio

have high KPI

Default Service Priority Mapping for the Abis interface





EML AF21 18 2 3

IP Clock EF 46 5 0

ermediate network adopts the basic eight-queue mechanism. Network

3/AF2/AF1/BE) and L2 supports eight priority queues of the VLAN.

t e pr or t es o , , , , an s str ute nto ve pr or ty

is distributed into five priority queues.

and 1 is distributed into six priority queues.

ping between the DSCP/VLAN priority and the priority queues

and the priority queues needs to be configured on customer devices.

.

(6+5)/4/3/(2+1).

rity (6+5)/(4+3)/(2+1).

y (6+5+4+3)/(2+1) (Note2).

gh-priority queues, avoiding being impacted by high speed packet

w-priority queues. Therefore, at least two queues must be available.

)/4/3/2.

+5)/4/(3+2).

+5)/(4+3+2)..

5+4)/2/1.

+5+4)/(2+1).





Source Device Source IP Address Source PortDestination

Device

NodeB<->RNC

MBSC IP address of the MBSCsignaling plane

1024–65535 NodeB

NodeBIP address of the NodeB

signaling plane 1024–65535 MBSC

MBSCIP address of the MBSC user

plane 5000–65535 NodeB

NodeBIP address of the NodeB user

plane 1024–5823 MBSC




plane65030 NodeB

NodeB IP address of the NodeB userplane

1024–65535 MBSC


plane65040 NodeB




plane65020 NodeB




plane65010 NodeB

NodeB<->router

Router User plane definition 1024–65535 NodeB

NodeB User plane definition 3784 Router

Router User plane definition 1024–65535 NodeB

NodeB User plane definition 4784 Router

NodeB<->clock server

IP clock server IP address of the IP clock server 35001 NodeB

NodeBInterface IP address of the

NodeB33003 IP clock server

IP clock server

(1588v2)IP address of the IP clock server 1024–65535 NodeB

Ports on the Bearer Network That Support






NodeB319

IP clock server

(1588v2)

IP clock server

(1588v2)IP address of the IP clock server 1024–65535 NodeB

NodeB Interface IP address of theNodeB

320 IP clock server(1588v2)

NodeB<->security gateway


NodeB500 Security gateway

Security

gateway

IP address of the security

gateway500 NodeB

NodeB<->PKI

server

NodeB

OM IP address of the

NodeB/interface IP address of

the NodeB

1024–65535

Certificate

Authority (CA)

server

NodeB<->M2000 server/LMT

M2000 server

LMTIP address of the M2000 server 1024–65535 NodeB

M2000 server


M2000 server


M2000 server


M2000 server IP address of the M2000 server 1024–65535 NodeB

NodeB<->Dynamic Host Configuration Protocol (DHCP) server

DHCP server IP address of the DHCP server 67 NodeB

DHCP client 0.0.0.0 68 DHCP server





NodeB<->FTP

server

FTP server IP address of the FTP server 21 NodeB

NodeB OM IP address of the NodeB 1024–65535 FTP server

NodeB<->Network Time Protocol (NTP) server

NTP server IP address of the NTP server 123 NodeB





Destination IP Address

Destination

Port

(Listening)

Protocol Port Description

IP address of the NodeBsignaling plane

1024–65535

SCTP SCTP connection

IP address of the MBSC

signaling plane

1024–6553

5SCTP SCTP connection

IP address of the NodeB

user plane 1024–5823 UDP Transmitting service data


user plane

5000–6553

5UDP Transmitting service data


user plane65030 UDP UDP Ping


user plane

1024–6553

5UDP UDP Ping

IP address of the MBSCuser plane

65040 UDP Transmission quality detection


user plane

1024–6553

5UDP Transmission quality detection


user plane65020 UDP IPPM


user plane

1024–6553

5UDP IPPM


user plane65010 UDP Sending FPMUX packets


user plane

1024–6553

5UDP Sending FPMUX packets

User plane definition 3784 UDPSending single-hop BFD

packets

User plane definition 1024–6553

5UDP

Sending single-hop BFD

packets

User plane definition 4784 UDPSending multi-hop BFD

packets

User plane definition 1024–6553

5UDP

Sending multi-hop BFD

packets

Interface IP address of the

NodeB33003 UDP Clock server of Huawei

IP address of the IP clock

server 35001 UDP Clock server of Huawei


NodeB319 UDP

Sending 1588V2 over UDP

common messages

the Required Services on the Iub Interface






server

1024–6553

5UDP


common messages


NodeB320 UDP


event messages

IP address of the IP clockserver

1024–6553

5UDP Sending 1588V2 over UDP

event messages


gateway500 UDP

IP Security (IPSec) Internet

Key Exchange (IKE)


NodeB500 UDP IPSec IKE

IP address of the CA server 80/8080/44

3TCP

Connecting the CA server;

applying for and updating the

certificate


NodeB

Local IP address of the

NodeB

6000 TCP Sending MML commands


NodeB


NodeB

6001 TCP Sending alarms


NodeB


NodeB

6006 TCPUsed by the OM channel;

supporting the binary format


NodeB


NodeB

6007 TCP

A common port for sending

test messages, alarm

messages, and MML

commands


NodeB45300 UDP OM channel switch


NodeB68 UDP

DHCP client (when the M2000

serves as the DHCP server)


NodeB67 UDP DHCP relay






NodeB

1024–6553

5TCP FTP control

IP address of the FTP

server21 TCP FTP control


NodeB 123 UDP

NTP client (when the M2000

serves as the NTP server)





Source Device Source IP AddressSource

Port

Destination

Device

BTS<->BSC

BTS

OM IP address of the BTS/IP

address of the BTS signaling

plane

12288–28673

BSC

BSC

OM IP address of the BSC/IP

address of the BSC signaling

plane

4502–464

9BTS

BTSIP address of the BTS user

plane

4096–122

87BSC

BSCIP address of the BSC user

plane

5000–650

00BTS


plane

1024–655

35BSC


plane

1024–655

35BTS

BTS IP address of the BTS userplane

1024–655

35BSC


plane

1024–655

35BTS


plane

65040

1024–358

4

BTS


plane

65040

1024–358

4

BSC


plane65042 BTS


plane65042 BSC

BTS OM IP address of the BTS 65043 BSC

BSC OM IP address of the BSC 65042 BTS

BTS<->router

BTSInterface IP address of the

BTS

49152–65

535Router

Router IP address of the router 49152–65

535BTS


BTS

49152–65

535

Router

Router IP address of the router 49152–65

535BTS

BTS<->clock server

BTSOM IP address of the BTS/IP

address of the BTS user plane319

IP clock server

(1588v2)

Ports on the Bearer Network That Suppo





IP clock server

(1588v2)


server 319 BTS

BTSOM IP address of the BTS/IP

address of the BTS user plane320

IP clock server

(1588v2)

IP clock server(1588v2)

IP address of the IP clockserver

320 BTS

PC<->BTS

PC IP address of the PC 1024–655

35BTS

BTSIP address of the BTS console

port700 PC

BTS<->security

gateway


BTS500 Security gateway

Security

gateway


gateway500 BTS

BTS<->PKI server

BTS


BTS/interface IP address of

the BTS

1024–655

35CA server

CA server IP address of the CA server 80/8080/4

43BTS

BTS



the BTS

1024–655

35

Lightweight

Directory Access

Protocol (LDAP)

Server

LDAP Server CR/CRL IP address 0–65535 BTS

BTS<->File Transfer Protocol (FTP) server

BTS OM IP address of the BTS 1024–655

35FTP server

FTP server IP address of the FTP server 21–65535 BTS





BTS OM IP address of the BTS 49152–65

535FTP server

FTP server IP address of the FTP server

Determine

d by the

server

BTS

BTS<->DHCP server

BTS



the BTS

67 DHCP server

DHCP server IP address of the DHCP server 67 BTS

BTS 0.0.0.0 67

DHCP

server/DHCP

Relay

DHCP

server /DHCP

relay server

Broadcast address/IP address

of the DHCP relay server 68 BTS

BTS<->a device where the ping detection and TraceRt detection are enabled

BSC


BSC/loopback IP address

(source IP address of the ping

detection)

BTS

BTS


BTS/loopback IP address(destination IP address of the

ping detection)

BSC

BSC



(source IP address of the

TraceRt detection)

1024–655

35BTS

BTS


BTS/loopback IP address

(destination IP address of the

TraceRt detection)

65300–65

535BSC





Destination IP Address

Destinatio

n Port

(Listening)

Protocol Port Description

OM IP address of the BSC/IP

address of the BSC signaling

plane

4502–4649

UDP Transmitting OM andsignaling data


address of the BTS signaling

plane

12288–28

673UDP

Transmitting OM and

signaling data

IP address of the BSC user

plane

5000–650


IP address of the BTS user

plane

4096–122



plane65020 UDP Sending IP PM packets


plane65020 UDP Sending IP PM packets

IP address of the BSC userplane

65010 UDP Sending Abis MUX packets


plane65010 UDP Sending Abis MUX packets


plane

65040

1024–358

4

UDP Network quality detection


plane

65040

1024–358

4

UDP Network quality detection


plane65042 UDP UDP Ping


plane65042 UDP UDP Ping

OM IP address of the BSC 65042 UDP

Checking whether the

transmission channel

functions properly.

OM IP address of the BTS 65043 UDP

Checking whether the

transmission channel

functions properly.

IP address of the router 3784 UDPSending single-hop BFD

packets


BTS3784 UDP

Sending single-hop BFD

packets

IP address of the router 4784 UDPSending multi-hop BFD

packetsInterface IP address of the

BTS4784 UDP

Sending multi-hop BFD

packets


server 319 UDP


event messages

rt the Required Services on the Abis Interface






address of the BTS user plane319 UDP


event messages


server 320 UDP


common messages

OM IP address of the BTS/IPaddress of the BTS user plane

320 UDP Sending 1588V2 over UDPcommon messages

IP address of the BTS console

port700 TCP Sending SMT packets

PC IP 1024–655

35


gateway500 UDP IKE negotiation


BTS500 UDP IKE negotiation

IP address of the CA server 80/8080/4

43TCP Digital certificate CMPV2



the BTS

1024–655

35TCP Digital certificate CMPV2

CR/CRL IP address 0–65535 TCP LDAP



the BTS

1024–655

35TCP LDAP

IP address of the FTP server 21–65535 TCP

FTP control.

The FTP control port is port

21 by default, which can be

changed.

OM IP address of the BTS 1024–655

35TCP

FTP control.The FTP control port is port

21 by default, which can be

changed.





IP address of the FTP server

Determine

d by the

server

FTP data transmission.

The client port is determined

by the client, and the server

port is determined by the

server, irrespective of the

mode (active or passive).

OM IP address of the BTS 49152–65

535TCP

FTP data transmission.

The client port is determined

by the client, and the server

port is determined by the

server, irrespective of the

mode (active or passive).

IP address of the DHCP server 67 UDP DHCP relay service


BTS/interface IP address ofthe BTS

67 UDP DHCP relay service

Broadcast address 68 UDP DHCP service

Broadcast address 67 UDP DHCP service




ping detection)

ICMPInitiating the ping detection

from the BSC to the BTS


BSC/loopback IP address(source IP address of the ping

detection)

ICMP Sending the ping responsepacket of the BTS




TraceRt detection)

65300–65

535UDP

Initiating the TraceRt

detection from the BSC to

the BTS



(source IP address of the

TraceRt detection)

1024–655

35UDP

Sending the TraceRt

response packet of the BTS





2

1 1

BSC/RNC Clock Solution

BTS/NodeB Clock Solution

Clock Server Configurations

3

2

1

1

2

1The clock system is not required if the BSC/RNC provides only the

FE/GE Ethernet ports.

Pay attention to the following when configuring the line clock:

1. If TDM ports are configured on the Core Network (CN) side, clock

signals can be obtained from the CN. The following lists in

descending order the CN NEs from which clock signals can be

obtained: media gateway (MGW) > mobile switching center (MSC)

server > home location register (HLR) > serving GPRS support

node (SGSN).

2. If TDM ports are configured on the BTS/NodeB side but not onthe CN side and if the clock signals on the intermediate SDH

network meet the quality requirements, the BSC/RNC obtains clock

signals from the SDH network. If the SDH network uses E1/T1

electrical ports, the electrical ports must be set to retiming mode.

3. If the line clock is used, the clock board must be configured in the

MPS.

If the BSC/RNC uses time division multiplexing (TDM) ports, such

as E1, T1, STM-1, or STM-4, a clock system must be configured.

The external clock source can be the building integrated timing

supply (BITS), Global Positioning System (GPS), external 8 kHzclock, or line clock.

The clock server is recommended to be directly connected to

routers without using the BSC/RNC.

The transport network meets the QoS requirements of the clock

server. The 1588v2 unicast solution is recommended.1

If the clock server is not configured, any of the following

BTS/NodeB synchronization schemes can be used: GPS,

synchronous Ethernet, external BITS, and line clock. 3





Configuration Requirements for the Transport Network

Configuration Requirements for the Transport Network

Transmission Configuration Requirements

If the line clock is used, the error rate of the line clock must be less than

50 ppm.

Direct routes must be configured from routers to the active and standby

clock servers.

The minimum bandwidth for each BTS/NodeB is 16.5 kbit/s, and the

maximum bandwidth for each BTS/NodeB is 66 kbit/s.

If the line clock is used, the error rate of the line clock must be less than

50 ppm.

Neighboring transmission devices of the BTS/NodeB must supportEthernet synchronization, ensuring that the clock error rate is less than 50

ppm.

configuration check

Documents