HP StorageWorks Enterprise File Services WAN Accelerator Deployment Guide (November 2005)

HP EFS WAN ACCELERATOR DEPLOYMENT GUIDE 79
7 - WCCP DEPLOYMENTS
Failover
Support
You can also provide failover support using WCCP. In a failover
configuration, the HP EFS WAN Accelerators periodically announce
themselves to the routers. If an HP EFS WAN Accelerator fails, traffic is
redirected to the working HP EFS WAN Accelerators.
For example, instead of load balancing traffic between two HP EFS WAN
Accelerators, you might want traffic to go to only one HP EFS WAN
Accelerator and to failover to the other HP EFS WAN Accelerator if the first
one fails.
To configure failover support, you simply define the weight to be 0 on the
backup HP EFS WAN Accelerator. For detailed information, see “WCCP CLI
Commands” on page 64.
Troubleshooting
You can check your WCCP configuration on the router and the HP EFS WAN
Accelerator.
To check the router
configuration
• On the router, at the system prompt, enter the following set of commands:
Router>en
Router#show ip wccp
Router#show ip wccp 90 detail
Router#show ip wccp 90 view
You can trace WCCP packets and events on the router.
To trace WCCP
packets and events on
the router
• On the router, at the system prompt, enter the following set of commands:
Router>en
Router#debug ip wccp events
WCCP events debugging is on
Router#debug ip wccp packets
WCCP packet info debugging is on
Router#term mon