Configuring A Fast Vrrp Switchover; Establishing The Configuration Task - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
Procedure
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Example
After the configuration, run the display vrrp protocol-information command, and you can
view that the VRRP protocol version is v3 and the mode for sending Advertisement packets is
send v3 only.
<Huawei>display vrrp protocol-information
VRRP protocol information is shown as below:

2.9 Configuring a Fast VRRP Switchover

By tracking the BFD session status, NQA test instance status, and route status, a VRRP backup
group implements VRRP switchovers rapidly.

2.9.1 Establishing the Configuration Task

Before configuring a fast VRRP switchover (in common mode), familiarize yourself with the
applicable environment and complete the tasks of pre-configuring a VRRP backup group.
Applicable Environment
VRRP tracks BFD sessions. Any change in BFD session is notified to the VRRP module to
trigger a fast VRRP switchover.
A VRRP backup group tracks the following entities:
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A VRRP backup group tracks multiple normal BFD sessions, or multiple interfaces.
If the VRRP backup group tracks several BFD sessions, a change in the status of a BFD session
does not affect other BFD sessions' status.
If the status of one BFD session tracked by a VRRP backup group changes, the master/backup
switchover is triggered by changing priorities of routers in the VRRP backup group. After the
tracked BFD session recovers, the priorities of routers in the VRRP backup group are restored
to original values.
Pre-configuration Tasks
Before configuring a fast VRRP switchover, complete the following tasks:
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Issue 01 (2012-01-06)
Run the display vrrp protocol-information command to view VRRP version information.
VRRP protocol version : V3
Send advertisement packet mode : send v3 only
Normal BFD session
Interface
Configuring network layer attributes for interfaces to connect to the network
Configuring a VRRP backup group
Configuring a BFD session
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2 VRRP Configuration
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