Protect the GSLB setup against failure 编辑

You can protect your GSLB setup against failure of a GSLB site or a GSLB virtual server by configuring the following:

• A backup GSLB virtual server
• A Citrix ADC appliance to respond with multiple IP addresses
• A backup IP address for a GSLB domain

You can also divert excess traffic to a backup virtual server by using spillover.

Configure a backup GSLB virtual server

Configuring a backup entity for a GSLB virtual server ensures that DNS traffic to a site is not interrupted if the GSLB virtual server goes down. The backup entity can be another GSLB virtual server, or it can be a backup IP address. With a backup entity configured, if the primary GSLB virtual server goes down, the backup entity handles DNS requests. To specify what must happen when the primary GSLB virtual server comes back up again, you can configure the backup entity to continue handling traffic until you manually enable the primary virtual server to take over (using the disablePrimaryOnDown option).

Note: You can configure a single backup entity as backup for multiple GSLB virtual servers.

To configure a backup GSLB virtual server by using the command line interface

At the command prompt, type the following commands to configure a GSLB virtual server as backup virtual server and verify the configuration:

set gslb vserver <name> -backupVServer <name> [-disablePrimaryOnDown (ENABLED | DISABLED)]

show gslb vserver <name>
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