Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 76)

64 ServerIron ADX Global Server Load Balancing Guide
53-1002437-01
Site persistence in GSLB using stickiness
1
The <si-name> parameter specifies the name of the peer site ServerIron ADX to regenerate the
session keys for.
The <si-ip-address> parameter specifies the IP address of the peer site ServerIron ADX.
The regenerate-key-interval <duration> parameter configures the ServerIron ADX to periodically
regenerate session keys for the peer site ServerIron ADX. Each time a connection is set up, this key
is regenerated and negotiated.
The <duration> specifies the duration in minutes after which new session keys will be regenerated.
The random option configures the controller to regenerate session keys for the peer site ServerIron
ADX at a bounded random frequency.
When used with random, the <duration> parameter specifies the bound on the random key
regeneration duration in minutes. The key will be randomly regenerated between 1 minute and the
upper bound specified by the duration parameter.
Minimum GSLB configuration
Following is a sample minimum GSLB controller configuration for Secure GSLB. Note the si
secure-communication command.
server real dns-rs 20.20.20.105

port dns

port dns one "brocade.com"

port dns proxy

port http

port http url "HEAD /"

!

!

server virtual dns-vs 8.8.8.200

port dns

port http

bind dns dns-rs dns

bind http dns-rs http

!

gslb protocol

gslb sit brocade

si si-1 2.2.2.1

si si-2 2.2.2.3 secure-communication 

gslb dns zone brocade.com
host-info www http
Site persistence in GSLB using stickiness
Sticky GSLB enables the GSLB controller to return the same IP address if a client sends multiple
DNS requests within a configurable period of time. This feature ensures the client is directed to the
site that was previously visited.
For example, a business case for Sticky GSLB includes when user-specific content is stored at one
site, such as a shopping cart. Being redirected to a site that no longer stores the content would
result in a lost session.
To return the same IP address for a client that has sent requests previously, the GSLB controller
must save the following information: