From: Rivalino YMT. (rivel131@cyberlib.itb.ac.id)
Date: Thu Jul 17 2003 - 03:44:28 GMT-3
Then, in which interface should we put 'ip wccp web-cache redirect in'?
In interface directly connected with cache engine or in interface
connected to users? I become confused.
Rivalino
On Wed, 16 Jul 2003, Brian McGahan wrote:
> Jim,
>
> The redirection direction doesn't have anything to do with where
> the cache engine sits. It has to do with when the redirection is done.
>
> Redirecting 'in' is faster that redirecting 'out', since the
> redirection is done before the routing table lookup and switching is
> done by the router. If you redirect the packet while it's going 'out',
> then the router just wasted the time doing a lookup and switching a
> packet that has to be possibly redirected to another interface.
>
> The router learns where the cache engine sits by running WCCP.
> Either the cache engine has the router's address configured by its
> unicast address, or it announces to a multicast address that the router
> listens for.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> Director of Design and Implementation
> brian@cyscoexpert.com
>
> CyscoExpert Corporation
> Internetwork Consulting & Training
> Toll Free: 866.CyscoXP
> Fax: 847.674.2625
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