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  [-backupVServer ] - show cr vserver  

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 toTraffic Management > Cache Redirection > Virtual Servers.
2. 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.
3. In the Configure Virtual Server (Cache Redirection) dialog box, select the Advanced tab.
4. 在备份六世rtual Server drop-down list, select the virtual server.
5. Click OK.