Aruba Networks AirOS v2.3, User Manual

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240 Aruba AirOS Part 0500036-02
v2.3 User Guide January 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 master 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 corresponding 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