Applicable Scenarios; Association Between A Vrrp Group And The Interface Status To Monitor The Uplink Interface - Huawei AR530 Series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Reliability
Figure 6-5 Multi-gateway load balancing
HostA
Default gateway:
10.1.1.111
HostB
Default gateway:
10.1.1.112
As shown in
l
l
VRRP groups 1 and 2 are gateways for different user hosts. Multiple VRRP groups load balance
traffic and back up each other.

6.3 Applicable Scenarios

This section describes the applicable scenarios of VRRP.
6.3.1 Association Between a VRRP Group and the Interface Status
to Monitor the Uplink Interface
A VRRP group can only detect the status change of the interface on which the VRRP group is
configured. VRRP cannot detect faults on the uplink interface or direct uplink of the master, so
services are interrupted. You can associate a VRRP group with the interface status. When the
uplink interface or direct uplink of the master fails, the priority of the master is adjusted. This
triggers an active/standby switchover and ensures proper traffic forwarding.
Issue 01 (2014-11-30)
VRRP VRID 1
Virtual IP Address:
10.1.1.111
VRRP VRID 2
Virtual IP Address:
10.1.1.112
Figure 6-5, two VRRP groups are configured:
VRRP group 1: RouterA functions as the master and RouterB as the backup.
VRRP group 2: RouterB functions as the master and RouterA as the backup.
NOTE
A VRRP group can monitor the interface status in Increased or Reduced mode:
l In Increased mode, when the monitored interface becomes Down, the priority of the master increases.
l In Reduced mode, when the monitored interface becomes Down, the priority of the master decreases.
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RouterA
VRID1:Master
VRID2:Backup
RouterC
RouterB
VRID2:Master
VRID1:Backup
6 VRRP Configuration
Internet
Data flow 1
Data flow 2
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