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>

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

Specify a backup cache redirection virtual server by using the GUI

  1. Navigate to Traffic Management > Cache Redirection > irtual Servers.
  2. In the details pane, select the virtual server for which you want to change the destination for a policy hit, (for example, Vserver-CRD-1), and then click Open.
  3. In Configure Virtual Server (Cache Redirection) dialog box, select the Advanced tab.
  4. In the Backup Virtual Server drop-down list, select the virtual server.
  5. Click OK.