Load balancing of authentication servers ensures that the authentication load is split across multiple authentication servers, thus avoiding any one particular authentication server from being overloaded. Authentication Server Load Balancing functionality enables the Aruba Mobility Controller to perform load balancing of authentication requests destined to external authentication servers (Radius/LDAP etc). This prevents any one authentication server from having to handle the full load during heavy authentication periods, such as at the start of the business day.
Feature Notes :
Environment : Aruba controller with Multiple Authentication servers
Configuration Steps :
Starting from AOS 6.4 image version, a new load–balancing enable parameter has been introduced in aaa server-group test command to enable authentication server load balancing functionality.
To Enable the Feature:
aaa server-group <sg_name>
To Disable the Feature:
show aaa load-balance statistics server-group <sg_name>
Acct Rq Accounting requests: This reports of the number of accounting messages (for example, start/stop/interim update) sent by the controller to a RADIUS server. This counter increments whenever the controller sends one of these messages.
Tmout Timeouts. Number of messages sent by the controller for which the controller did not receive a response before the message timed out.