Brocade Communications Systems 12.4.00 manual Gslb active bindings enhancements

1 Configuring GSLB protocol parameters

GSLB active bindings enhancements

The following features have been added to GSLB active bindings:

•Weighed active bindings

•Minimum active bindings

•Tracking an application port for active bindings

Configuring weighted active bindings

Weighted Active Bindings allows you to configure the GSLB ServerIron ADX to direct requests to domain VIPs in proportion to their active bindings. For example, if VIP-1 has 2 active bindings and VIP-2 has 1 active binding, you can configure the GSLB ServerIron ADX to direct two-thirds of the client requests to VIP-1 and one-third of the client requests to VIP-2.

To enable weighted active bindings for the global GSLB policy, first enable the active bindings using the existing active-bindingsCLI command, then configure the following additional command.

ServerIronADX# configure terminal

ServerIronADX(config)# gslb policy

ServerIronADX(config-gslb-policy)# weighted-selection

ServerIronADX(config-gslb-policy)# end

ServerIronADX#

To enable weighted active bindings for the host level policy, first enable the active bindings using the existing active-bindingsCLI command, then configure the following additional command.

ServerIronADX# configure terminal

ServerIronADX(config)# gslb-host-policy abc

ServerIronADX(config-gslb-host-policy-abc)# weighted-selection

ServerIronADX(config-gslb-host-policy-abc)# end

ServerIronADX#

Using minimum active bindings

You can configure the GSLB ServerIron ADX to use the minimum active bindings among all application ports if multiple application ports are associated with a domain. For example, if application ports http and ftp are configured for www.companynet.com, you may need the active bindings count for the VIPs to be based on the minimum of the active bindings for these two application ports. You can configure the GSLB ServerIron ADX to use minimum bindings as follows.

ServerIronADX# configure terminal ServerIronADX(config)# gslb dns zone companynet.com ServerIronADX(config-gslb-dns-companynet.com)# host-info www http ServerIronADX(config-gslb-dns-companynet.com)# host-info www ssl ServerIronADX(config-gslb-dns-companynet.com)# host-info www min-bindings ServerIronADX(config-gslb-dns-companynet.com)# end

Tracking an application port for active bindings

You can configure the GSLB ServerIron 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.companynet.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 ServerIron ADX to track active bindings for the http port only as follows.

48	ServerIron ADX Global Server Load Balancing Guide
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