Configuring Association Between Vrrp And The Interface Status To Implement An Active/Standby Switchover; Configuring Association Between Vrrp And Bfd To Monitor The Uplink Status - Huawei AR530 Series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Reliability
6.7.2.2 Configuring Association Between VRRP and the Interface Status to
Implement an Active/Standby Switchover
Context
When the uplink interface of the master becomes faulty, VRRP cannot detect the status change
of interfaces not in the VRRP group, causing service interruption. You can associate a VRRP
group with the interface status. When the monitored interface is faulty, the priority of the master
is reduced. This triggers an active/standby switchover and reduces the impact of the uplink
interface fault on service forwarding.
When the fault is rectified, the original master restores its priority and switches to the master to
forward traffic.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The view of the interface on the master where a VRRP group is configured is displayed.
Step 3 Run:
vrrp vrid virtual-router-id track interface interface-type interface-number
[
Association between VRRP and the interface status is configured.
By default, when the monitored interface goes Down, the VRRP priority of the device decreases
by 10.
----End
6.7.2.3 Configuring Association Between VRRP and BFD to Monitor the Uplink
Status
Context
Because VRRP cannot detect faults on the uplink of a VRRP group, services may be interrupted.
As shown in
the BFD session monitors the uplink status of the master. When the BFD session detects a fault
Issue 01 (2014-11-30)
NOTE
The master and backup in the VRRP group must work in preemption mode. It is recommended that the
preemption delay be 0 on the backup and non-0 on the master.
value-increased | reduced value-reduced ]
NOTE
l After the value by which the priority decreases is set, ensure that the priority of the backup is higher
than the priority of the master.
Figure 6-11, a VRRP group is associated with a BFD session on the master so that
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