User Guide

OmniAccess RN: User Guide
256 Part 031650-00 May 2005
During failover, the operation state of the client is not maintained and the client
will have to re-authenticate to gain access.
Requirements on the Master Switch
z The master switch should have an interface on each of the vlans the
local switches belong to.
z The master switch also has a separate VRRP instance for each of the
local switches corresponding to the local switch’s VLAN and subnet.
z The VRRP instances on the master have a lower priority since the mas-
ter is a backup and needs to take over the Home agent functionality only
if the local switch goes down.
z The preemption on all the master switch’s VRRP instances is disabled.
Requirements on the Local Switch
z The local switch shares a VRRP instance with the master. The address
of the VRRP instance, VLAN ID on the local switch and the correspond-
ing instance on the master must be the same. Ex. The VRRP instance
between the switch local1 and master would have the VRRP address
10.1.101.10 and VLAN ID 101 configured on both switches.
VRRP instance
VLAN 101
Switches
involved
Master and Local_101
VRRP address 10.1.101.12
VRRP instance
on local_101
Priority = 150
Pre-empt = enable
VRRP instance
on master
Priority = 100
Pre-empt = disable
VRRP instance
VLAN 102
Switches
involved
Master and Local_102
VRRP address 10.1.102.12
VRRP instance
on local_102
Priority = 150
Pre-empt = enable
VRRP instance
on master
Priority = 100
Pre-empt = disable
VRRP instance
VLAN 103
Switches
involved
Master and Local_101
VRRP address 10.1.103.2
VRRP instance
on local_103
Priority = 150
Pre-empt = enable
VRRP instance
on master
Priority = 100
Pre-empt = disable