Administrator Guide

Table Of Contents
Command Explanation
master-redundancy
Enter the master-redundancy context.
master-vrrp <id>
Associates a VRRP instance with master redundancy.
Enter the virtual router ID of the VRRP instance.
peer-ip-address <ipaddr> ipsec <key>
Loopback IP address of the peer controller for master
redundancy.
The pre-shared key secures communication between
the master controllers. Specify a key of up to 64
characters.
masterip <ipaddr> ipsec <key>
Configures the master IP address and pre-shared key
on a local controller for communication with the master
controller.
Configure this to be the virtual IP address of the VRRP
instance used for master redundancy.
Table 131: VRRP Commands
Configure all the APs and local controllers in the network with the virtual IP address as the master IP address. You
can configure the master IP address for local controllers during the Initial Setup. The controller will require a reboot
after changing the master IP on the controller.
If DNS resolution is the chosen mechanism for the APs to discover their master controller, ensure that the
name aruba-master” resolves to the same virtual IP address configured as a part of the master redundancy.
Configuring Database Synchronization
In a redundant master controller scenario, you can configure a redundant pair to synchronize their WMS and
local user databases. You can either manually or automatically synchronize the databases.
When manually synchronizing the database, the active VRRP master synchronizes its database with the
standby. The command takes effect immediately.
When configuring automatic synchronization, you set how often the two controllers synchronize their
databases. To ensure successful synchronization of database events, you should set periodic synchronization
to a minimum period of 20 minutes.
In the WebUI
1. On each controller, navigate to the Configuration > Advanced Services > Redundancy page.
2. Under Database Synchronization Parameters, do the following:
a. Select the Enable periodic database synchronization check box. This enables database
synchronization.
b. Enter the frequency of synchronizing the databases. A minimum value of 20 minutes is recommended.
3. Click Apply.
In the CLI
Use the following commands to configure database synchronization.
Dell Networking W-Series ArubaOS 6.4.x | User Guide Increasing Network Uptime Through Redundancy and VRRP | 675