Brocade Virtual ADX Global Server Load Balancing Guide (Supporting ADX v03.1.00) - Manual (Page 57)

Brocade Virtual ADX Global Server Load Balancing Guide 47
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Configuring GSLB protocol parameters
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Tracking an application port for active bindings
You can configure the GSLB Brocade Virtual ADX to track a particular application port for active
bindings if multiple application ports are associated with a domain. For example, if application
ports HTTP and SSL are configured for www.example4.com, you may need the active bindings
count for the VIPs to be based only on the active bindings for the HTTP port but not the SSL port.
You can configure the GSLB Brocade Virtual ADX to track active bindings for the http port only as
follows.
Virtual ADX#configure terminal
Virtual ADX(config)#gslb dns zone example5.com
Virtual ADX(config-gslb-dns-example5.com)#host-info www http
Virtual ADX(config-gslb-dns-example5.com)#host-info www ssl
Virtual ADX(config-gslb-dns-example5.com)#host-info www http track-port
Virtual ADX(config-gslb-dns-example5.com)#end
Configuring connection load parameters
A GSLB site’s connection load is the average number of new connections per second on the site,
over a given number of intervals. When you enable this GSLB metric, all potential candidates are
compared against a predefined load limit. All sites that have fewer average connections than the
threshold are selected and passed to the next comparison metric.
The connection load metric is disabled by default but is enabled (added to the GSLB policy) when
you configure the metric.
You can configure the following parameters:
• Site connection limit
• Sampling intervals and sample rate
• Interval weights
• Comparison order in the GSLB policy
When the connection load metric is enabled, by default the metric is used after the geographic
location metric but before the session capacity metric. You can change the order in which the
metrics are applied.
To configure the connection limit metric, perform the following tasks on the Brocade Virtual ADX
that is the GSLB controller. You do not need to perform any tasks on the site ADX devices. All
configuration for the metric takes place on the controller.
• Specify the site connection limit. Specifying the site connection limit also enables the metric in
the GSLB policy.
• Optional – Change the sampling intervals and sample rate.
• Optional – Change the relative weights of the sampling intervals.
• Optional – Change the position of the metric in the GSLB policy. By default, the metric comes
after comparison of geographic locations and before comparison of session capacities.