Huawei AR2200-S Series Configuration Manual page 38

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
Interface backup in common active/standby mode monitors the status of the physical link
between two directly connected routers. You can configure association between interface backup
and NQA to detect the status of the upstream link. On RouterA, configure an NQA test instance
to detect connectivity for the primary link. When the NQA test instance detects that the primary
link is faulty, the backup interface is started. This ensures non-stop transmission of data services.
To configure association between interface backup and NQA, you only need to establish an
NQA test instance on RouterA.
Figure 1-11 Networking diagram of association between interface backup and NQA
HostA
Configuration Roadmap
The configuration roadmap is as follows:
1.
2.
Data Preparation
To complete the configuration, you need the following data as shown in
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l
l
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l
Configuration Procedure
1.
Issue 01 (2012-01-06)
GE1/0/0
2.1.1.2/24
GE1/0/0
2.1.1.1/24
RouterA
GE2/0/0
3.1.1.1/24
GE1/0/0
3.1.1.2/24
Configure an NQA test instance on RouterA.
Configure association between interface backup and NQA on backup interface GE2/0/0 of
RouterA.
IP addresses and static routes of interfaces on RouterA, RouterB, RouterC, and RouterD
Administrator and name of the NQA test instance
NQA test instance type (the NQA test instance can only be ICMP)
Destination IP address of the NQA test instance
Start and end modes of the NQA test instance
Configure connectivity at the network layer.
# Assign an IP address to each interface. Use RouterA as an example.
<Huawei> system-view
[Huawei] sysname RouterA
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GE2/0/0
4.1.1.1/24
RouterB
RouterD
RouterC
GE2/0/0
5.1.1.1/24
1 Interface Backup Configuration
GE1/0/0
4.1.1.2/24
GE2/0/0
5.1.1.2/24
HostB
Figure 1-11:
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