Alcatel-Lucent 6850-48 Guida Di Rete

Configuring VRRP

VRRPv3 Configuration Overview

OmniSwitch AOS Release 6 Network Configuration Guide

page 32-19

During startup, VRRPv3 is loaded onto the switch and is enabled. Virtual routers must be configured first 
and enabled as described in the sections. Since VRRPv3 is implemented on multiple switches in the 
network, some VRRPv3 parameters must b6e identical across switches:

If QoS filtering rules (Access Control Lists) are configured for Layer 3 traffic on a VRRP router, all of 
the VRRP routers on the LAN must be configured with the same filtering rules; otherwise the security 
of the network will be compromised. For more information about filtering, see 

All virtual routers with the same VRID on the LAN should be configured with the same advertisement 
interval and IP addresses. If the virtual routers are configured differently, it may result in more than 
one virtual router acting as the master router. This in turn would result in duplicate IP and MAC 
address messages as well as multiple routers forwarding duplicate packets to the virtual router MAC 
address. Use the 

 command to check for conflicting parameters. For information 

about configuring VRRPv3 parameters, see the remaining sections of this chapter.

At least two VRRPv3 virtual routers must be configured on the LAN—a master router and a backup 
router. The VRRPv3 virtual router is identified by a number called the Virtual Router ID (VRID), the 
VLAN on which the VRRPv3 virtual router is configured, and the IPv6 address or addresses associated 
with the router. Multiple VRRPv3 virtual routers may be configured on a single physical VRRP router.

Basic commands for setting up VRRPv3 virtual routers include:

The next sections describe how to use these commands.

To create a VRRPv3 virtual router, enter the 

 command with the desired VRID and the relevant 

VLAN ID. The VRID must be a unique number in the range from 1 to 255. The VLAN must already be 
created on the switch through the vlan command. For information about creating VLANs, see 

 For example:

-> vrrp3 6 4

This command creates VRID 6 on VLAN 4. 

When you create a new VRRPv3 virtual router, the VRID ID and a VLAN ID are required. Optionally, 
you may also specify:

• Priority (in the range from 1 to 255); use the priority keyword with the desired value. The default is 

100. Note that the IP address owner is automatically assigned a value of 255, which overrides any 
value that you may have already configured. See 

 for more information about how priority is used.