Back up a cache redirection virtual server
Cache redirection can fail if the primary virtual server fails, or if it is unable to handle excessive traffic. You can specify a backup virtual server to take over the processing of traffic when the primary virtual server fails.
To specify a backup cache redirection virtual server, use the backupVServer parameter, which specifies Backup Virtual Server. Maximum Length: 127
Specify a backup cache redirection virtual server by using the CLI
At the command prompt, type the following commands to specify a backup cache redirection virtual server and verify the configuration:
- set cr vserver <name> [-backupVServer <string>]
- show cr vserver <name>
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Example:
> set cr vserver Vserver-CRD-1 -backupVServer Vserver-CRD-2
Done
> show cr vserver Vserver-CRD-1
Vserver-CRD-1 (*:80) - HTTP Type: CONTENT
State: UP ARP:DISABLED
Client Idle Timeout: 180 sec
Down state flush: ENABLED
Disable Primary Vserver On Down : DISABLED
Default: Content Precedence: URL Cache: TRANSPARENT
On Policy Match: CACHE L2Conn: OFF OriginUSIP: OFF
Redirect: POLICY Reuse: ON Via: ON ARP: OFF
Backup: Vserver-CRD-2
1) Cache bypass Policy: bypass-cache-control
2) Cache bypass Policy: Policy-CRD
Done
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Specify a backup cache redirection virtual server by using the GUI
- Navigate to Traffic Management > Cache Redirection > Virtual Servers.
- In the details pane, select the virtual server for which you want to change the destination for a policy request, (for example, Vserver-CRD-1), and then click Open.
- In the Configure Virtual Server (Cache Redirection) dialog box, select the Advanced tab.
- In the Backup Virtual Server drop-down list, select the virtual server.
- Click OK.