Product Documentation

Backing Up a Cache Redirection Virtual Server

Aug 31, 2016

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

To specify a backup cache redirection virtual server by using the command line interface

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 

To specify a backup cache redirection virtual server by using the configuration utility

  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.