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Knowledge Base

VRRP runs abnormally because NE40 configures the same VRID in the two VRRP groups

Publication Date:  2012-07-27  |   Views:  175  |   Downloads:  0  |   Author:  Li Yufeng  |   Document ID:  EKB0000115771

Contents

Issue Description

VRRP backup group runs abnormally, the service always intermits.

Alarm Information

In logs, the following information is always printed
System detected a vrrp config error of  VIRTUAL IP ADDRESS ERROR

Handling Process

The problem is solved after modifying the group number of one virtual backup group, the configuration is
interface Ethernet3/0/0
ip address x.x.x.131 255.255.255.240
vrrp vrid 1 virtual-ip x.x.x.129
#
interface Ethernet3/0/2
ip address x.x.x.124 255.255.255.128
vrrp vrid 2 virtual-ip x.x.x.126
VRRP runs normally after modifying the configuration.

Root Cause

The configuration is
interface Ethernet3/0/0
ip address x.x.x.131 255.255.255.240
vrrp vrid 1 virtual-ip x.x.x.129
#
interface Ethernet3/0/2
ip address x.x.x.124 255.255.255.128
vrrp vrid 1 virtual-ip x.x.x.126
check the logs
the following information appears frequently
%Aug  5 02:19:28 2004 NE40-UP VRRP/5/ConfigError:
System detected a vrrp config error of  VIRTUAL IP ADDRESS ERROR
the system prompts to detect the virtual ip configuration error
because the two interfaces enable the virtual backup group 1
the configuration results in the backup group conflict, while the VRRP virtual backup group of NE40/80 is valid, so we cannot use the same virtual backup group number at the various interfaces.