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created for BRAS and CGN services, and the slave device must synchronize with the master
device in the VRRP backup group. As shown in
, CGN1 is equipped with one
service board, which is installed in slot 1. CGN2 is equipped with one service board, which is
installed in slot 1. NAT services are backed up between CPU0 in slot 1 on CGN1 and CPU0 in
slot 1 on CGN2.
NOTE
l
The VSUF-160 can house two subcards and supports a maximum of four CPUs.
l
The VSUF-80 can house one subcard and supports a maximum of two CPUs.
Figure 12-20
Networking diagram of HA Backup Between Two Indirectly Connected CGN
Devices for the NAT Service (Distributed Deployment Mode)
CR
GE3/0/1
1.1.1.1
GE3/0/1
1.1.1.2
GE2/0/1
192.2.2.10
GE2/0/1
192.2.2.100
IP MAN
Switch
PC1
PC2
CGN1
CGN2
GE1/0/0
GE1/0/1
Loopback1
8.8.8.1
CR
GE3/0/1
1.1.1.1
GE3/0/1
1.1.1.2
GE2/0/1
192.2.2.10
GE2/0/1
192.2.2.100
IP MAN
Switch
PC1
PC2
CGN1
CGN2
GE3/0/0
GE3/0/0
Loopback1
8.8.8.1
Loopback1
8.1.1.1
Configuration Roadmap
The configuration roadmap is as follows:
1.
Configure user access.
2.
Enable HA hot standby.
3.
Create an HA backup group.
4.
Create a service instance group and bind it to the HA backup group.
5.
Create an NAT instance and bind it to the service instance group.
6.
Configure user information (user group, IP address pool, user domain, and AAA domain),
and bind the user group to the NAT instance.
7.
Configure a remote backup service (RBS) and bind it to the NAT instance.
8.
Configure a user-side unicast VRRP backup group for CGN1/CGN2 and the switch.
9.
Configure a user-side unicast VRRP for CGN1/CGN2 and track the HA backup group.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
12 CGN Backing Up HA Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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