User's Manual

579 | Increasing Network Uptime Through
Redundancy and VRRP
Dell Networking W-Series ArubaOS 6.4.x| User Guide
(host)(HA group information "grp1"): controller <VRRP interface ipaddress> role dual
2. Configure the high-availability group profile with a dual role for the backup-master controller.
(host) (HA group information "grp1"): controller <VRRP interface ipaddress> role dual
Migrating from VRRP Redundancy
Perform the following steps to migrate from VRRP to High-Availability redundancy:
1. Remove the VRRP IP address as the LMS IP address of the AP.
(host) (AP system profile) #no lms-ip
2. Configure the AP to use the active controller’s IP address (not VRRP the IP address) as the LMS-IP for the AP.
(host) (AP system profile) #lms-ip <ipaddress>
3. Configure the AP to use the standby controller IP address (not VRRP the IP address) as the backup LMS-IP
for the AP.
(host) (AP system profile) #bkup-lms-ip <ipaddress>
4. Configure the master controller with a dual role in the high-availability group profile.
(host) (config) #ha group-profile grp1
(host) (HA group information "grp1"): controller <ipaddress> role dual
5. Configure the standby controller with a dual role in the high-availability group profile.
(host) (HA group information "grp1"): controller <ipaddress> role dual
Migrating from Backup-LMS Redundancy
Perform the following steps to migrate from Backup-LMS to High-Availability redundancy and maintain the
existing configuration as defined by the lms-ip and bkup-lms-ip parameters in the APsystem profile.
1. Configure the controller serving the AP with a dual role in the high-availability group profile.
(host) (config) #ha group-profile grp1
(host) (HA group information "grp1"): controller <ipaddress> role dual
2. Configure the AP’s standby controller with a dual role in the high-availability group profile.
(host) (HA group information "grp1"): controller <ipaddress> role dual
Configuring VRRP Redundancy
In a Dell network, the APs are controlled by a controller. The APs tunnel all data to the controller which
processes the data, including encryption/decryption and bridging/forwarding. Local controller redundancy
refers to providing redundancy for a controller such that the APs fail over”to a backup controller if a controller
becomes unavailable. Local controller redundancy is provided by running VRRP between a pair of
controllers.The APs are then configured to connect to the “virtual-IP” configured for the VRRP instance.
The two controllers need to be connected on the same broadcast domain (or Layer-2 connected) for VRRP operation.
The two controllers should be of the same class (for example, and both should be running the same version of
ArubaOS.
The following section of this document includes the following procedures:
l Before you Begin on page 580
l Configuring the Local Controller for Redundancy on page 580
l Configuring the LMS IP on page 582
l Configuring the Master Controller for Redundancy on page 582
l Configuring Database Synchronization on page 584
l Enabling Incremental Configuration Synchronization (CLIOnly) on page 584
l Configuring Master-Local Controller Redundancy on page 585