topic WCCP cache engine affinity in Network Security

WCCP cache engine affinity

zirkelad — Mon, 11 Mar 2019 19:26:55 GMT

Is it possible to have wccp redirect any given host to one cache engine for a period of time. For instance if I have a host X and it gets redirected to cache engine Y, I would like it to continue using that cache engine for the duration of its session. Is there a wccp setup that can accomplish this?

Re: WCCP cache engine affinity

Kureli Sankar — Thu, 23 Dec 2010 19:06:00 GMT

I believe that is true presently.

If you have two wccp servers only when one fails the second one takes over and when the failed one comes back online, second one still continues to provide the service.

I filed this ENH request on the IOS side.

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsy01353

I believe it is true on the ASA side as well.

Dont' miss my ATE event Starts January 3, 2011: https://supportforums.cisco.com/community/netpro/ask-the-expert

-KS

Re: WCCP cache engine affinity

Panos Kampanakis — Thu, 23 Dec 2010 23:47:11 GMT

You redirect to a cache engine based on the redirect list. If a packet matches a redirect list it goes to the engine the list is used.

So, you can use a time based ACL for the redirect list. Thus traffic will be matched in the list and forwarded to the engine only for the amount of time the ACL defines, and the rest of the time it will match another redirect list that is used with another engine.

I hope it helps and makes sense.