User's Manual

583 | Increasing Network Uptime Through
Redundancy and VRRP
Dell Networking W-Series ArubaOS 6.4.x| User Guide
l Collect the following data before configuring master controller redundancy.
l VLAN ID on the two controllers that are on the same layer 2 network.
l Virtual IP address that has been reserved to be used for the VRRP instance.
l You can use either the WebUI or CLI to configure VRRP on the master controllers (see Table 106). For this
topology, the following are recommended values:
l For priority: Set the master to 110; set the backup to 100 (the default value)
l Enable preemption
l Configure master up time or master state tracking with an add value of 20.
The following is a configuration example for the initially-preferred master.
(host)(config) #vrrp 22
vlan 22
ip address 10.200.22.254
priority 110
preempt
authentication password
description Preferred-Master
tracking master-up-time 30 add 20
no shutdown
The following configuration is the corresponding VRRP configuration for the peer controller.
(host)(config) #vrrp 22
vlan 22
ip address 10.200.22.254
priority 100
preempt
authentication password
description Backup-Master
tracking master-up-time 30 add 20
no shutdown
Use the following commands to associate the VRRP instance with master controller redundancy.
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 107: 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.