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Figure 3-3
Typical networking diagram of single-chassis APS
PE1
PE2
P
BTS
BSC
CPOS3/0/1
GE1/0/0
GE1/0/0
GE2/0/0
GE2/0/0
E12/0/1
E12/0/2
2
×
TDM E1
PWE3 TDM
Transparent Cell Transport
CPOS3/0/2
Pre-configuration Task
Before configuring APS, configure an interface on the router and ensure that the link layer
protocol between the router and the RNC is Up.
Data Preparation
To configure APS, you need the following data.
No.
Data
1
ID of an APS group
2
IDs of the working and protection interfaces in an APS group
3
(Optional) WTR time set for an APS group
3.2.2 Specifying a Working Interface and a Protect Interface for an
APS Group
A working interface and a protection interface must be specified and added to an APS group
before other APS configurations are performed.
Context
An APS group includes one working interface and one protection interface, and they are the
smallest units protected by APS. The communication messages between the working interface
and the protection interface are transmitted within the APS Group. Specifying a working
interface and a protection interface and adding them to an APS group are the prerequisites for
APS operation. The working interface is connected to a working link and the protection interface
is connected to a protect link. When an APS group works in 1:1 mode, the working interface
transmits traffic, but the protection interface does not. The protection interface takes over traffic
after APS switching is performed. When an APS group works in 1+1 mode, both the working
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
3 APS Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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