Configuring Vrrp To Track The Status Of An Interface - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
Applicable Environment
VRRP tracking interface status provides the backup function when the interface where the VRRP
backup group resides is faulty or when another interface on the router is faulty.
The method of tracking the status of the interface are as follows:
1.
2.
Pre-configuration Tasks
Before configuring VRRP to track the status of an interface, complete the following tasks:
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Data Preparation
To configure VRRP to track the status of an interface, you need the following data.
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2.4.2 Configuring VRRP to Track the Status of an Interface

By configuring a VRRP backup group to track the interface status, you can implement the fast
VRRP master/backup switchover.
Context
The backup is performed when other interfaces on a router are unavailable. This feature is
required in NAT applications.
Do as follows on the router of the tracked interface:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
Issue 01 (2012-01-06)
When the tracked interface is Down, the priority of the router in the backup group reduces
by a certain value automatically to be lower than that of other routers in the group.
The router with the highest priority becomes the master router and thus the master/backup
switchover of the VRRP backup group is complete.
Configuring network layer attributes for interfaces to connect to the network
Data
VRRP Backup group ID, the interfaces to be tracked, priority that takes effect when
the tracked interface becomes Down
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