WCCP Redundancy

[CSCO11177789]

Hello;

We implement WCCP v2 on cisco 6509 with wsg (websense security gateway)  successfully. For gateway redundancy we want ta add another wsg on network.

Could we configure wccp for use two wsg at the same time. Its not has to be active-active, active-passive is acceptable.

Thanks.

[pablo.nxh]

Hi,

First thing that you need to have in mind is that Cisco does not support active-passive with WCCP but you can make it work anyway.

If remember correctly WSG uses service 0 for HTTP-WCCP communication, service 0 has the highest priority for any Cisco WCCP capable

device so what you need to do is just configure your standby WSG with a higher service number  (make sure you don't use one of the protocol

defaults, i.e 70 = HTTPS).

So on your 6500 you should have something like this:

ip wccp 0 (primary)

ip wccp 10 (backup)

Then you need to configure both service under the same L3 interface or SVI whatever your case is

ip wccp 0 redirect in| out

ip wccp 10 redirect in | out

That's it, if 3 WCCP "Hello" messages get lost between the 6500 and the WSG then service 10 will be used to redirect client traffic.

HTH

__ __

Pablo