Configuring VRRP VRRPv3 Configuration Overview
OmniSwitch AOS Release 7 Network Configuration Guide June 2013 page 22-19
VRRPv3 Configuration Overview
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 be identical across switches:
• VRRPv3 and ACLs
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 Chapter 25, “Configur-
ing QoS.”
• Conflicting VRRPv3 Parameters Across Switches
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 show vrrp statistics command to check for conflicting parameters. For information
about configuring VRRPv3 parameters, see the remaining sections of this chapter.
Basic VRRPv3 Virtual Router Configuration
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:
vrrp3
vrrp3 address
The next sections describe how to use these commands.
Creating/Deleting a VRRPv3 Virtual Router
To create a VRRPv3 virtual router, enter the vrrp3 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 Chapter 4,
“Configuring VLANs.” 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 (vrrp priority): use the priority keyword to change the default priority value and set a desired
value. Note that the IP address owner is automatically assigned a value of 255, which overrides any
value that you may have already configured. See “Configuring the VRRPv3 Virtual Router Priority”
on page 22-21 for more information about how priority is used.
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