Alcatel-Lucent omniaccess User Manual

Part 031650-00

May 2005

—Note: All the APs and local switches in the network should be config-

ured with the Virtual IP address as Master IP. The Master IP address can be 
configured for local switches during the Initial Setup Dialog (refer Quick Start 
Guide for more details). The administrator can also use the following com-
mands to change the Master IP of the local switch. The switch will require a 
reboot after changing the Master IP of the switch.

If DNS resolution is the chosen mechanism for the APs to discover their 
Master switch, ensure that the name “Alcatel-master” resolves to the same 
Virtual IP address configured as a part of the master redundancy.

This section outlines the concepts behind a redundancy solution where a 
master can act as a backup for one or more local switches and shows how to 
configure the Alcatel Mobility Controllers for such a redundant solution. In this 
solution, the local switches act as the controller for the APs. When any one of 
the local switches becomes unavailable, the master takes over the APs 
controlled by that local switch for the time that the local switch remains 
unavailable. It is configured such that when the local switch comes back again, 
it can take control over the APs once more.

This type of redundant solution is illustrated by the following topology 
diagram. 

—This solution requires that the master switch has a layer-2 connectivity 

to all the local switches.

Step 1

 ip-address

Configures the Master IP 
address of a local switch

Configure this to be 
the virtual IP 
address of the VRRP 
instance used for 
master redundancy.