650| Increasing Network Uptime Through Redundancy and VRRP AOS-W 6.5.3.x| User Guide
redundancy, configure VRRP instances on each of the VLANs between the master and the respective local
switch. The VRRP instance on the local switch is configured with a higher priority to ensure that when available,
the APs always choose the local switch to terminate their tunnels.
n Configure the interface on the master switch to be a trunk port with 1, 2… n being member VLANs.
n Collect the following data before configuring master switch redundancy:
n VLAN IDs on the switches corresponding to the VLANs 1, 2…n shown in the topology above.
n Virtual IP addresses that have been reserved to be used for the VRRP instances.
You can use either the WebUI or CLI to configure VRRP on the master switches (see Table 139 ). For this
topology, the following values are recommended:
n For priority: Set the local to 110; set the master to 100 (the default value)
n Enable preemption
The master switch is configured for a number of VRRP instances (equal to the number of local switches the master is
backing up).
To configure the APs, configure the appropriate virtual IP address (depending on which switch is expected to
control the APs) for the LMS IP address parameter in the AP system profile for an AP group or specified AP.
Configure these AP settings on the master switch, not thelocal switch.
As an example, the administrator configures APs in the AP group “floor1” to be controlled by local switch 1, APs
in the AP group “floor2” to be controlled by local switch 2, and so on. All the local switches are backed up by the
master switch. In the AP system profile for the AP group “floor1”, enter the virtual IP address (10.200.22.154
in the example configuration) for the LMS IP address on the master switch.
Configuration changes take effect only after you reboot the affected APs, allowing them to reassociate with the
local switch. After rebooting, these APs appear as local APs to the new local switch.
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