From: Derek Chan (derekc@mad.scientist.com)
Date: Wed Nov 14 2007 - 17:54:37 ART
What about the traffic that is traveling via the router? Let say the router
an Internet Border Router with one interface into the Internet and an
interface with the Intranet.
PCs / Web CACHE <---> F0/0 |router| S0/0 <---> Internet
S0/1
|
|
Intranet
Should the configuration be something like this:
(Config)# IP WCCP WEB-CACHE
(Config)# Interface FA0/0
(config-if)# IP WCCP WEB-CACHE REDIRECT OUT
(config-if)# Interface S0/0
(config-if)# IP WCCP WEB-CACHE REDIRECT IN
(config-if)# Interface S0/1
(config-if)# IP WCCP WEB-CACHE REDIRECT IN
Isn't it true that the Web CACHE engine intercepts all the web traffic from
FA0/0 (I am assuming that the PCs and Web Cache Engine are in the same LAN)
thus making the inbound traffic redirection is unnecessary.
Here is another confusing part of the WCCP. If the redirection of WCCP is a
specific interface command, why is there a need for the command "IP WCCP
REDIRCT EXCLUDE ?" I just can't seem to get a definitive answer from the
Cisco documentation.
http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chap
ter09186a008030c778.html
Derek
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
shiran guez
Sent: Tuesday, November 13, 2007 1:01 AM
To: Carlos Trujillo Jimenez
Cc: ccielab@groupstudy.com
Subject: Re: ip wccp redirect
you need only Option A
interface FastEthernet0/0
ip wccp web-cache redirect in
think on the direction of the traffic, if you doing a HTTP GET from a PC
behind a F0/0 then the traffic is cumming in with Dst port 80 and source
random the web cache is intercepting your request and start to cache it the
second time another PC will try to GET he will send another request with the
GET to the same Destination and that is when the wccp server will spoof the
response and send him the file or page from the server.
PC ---> F0/0 ROUTER S0/0 ------> WEB SERVER
|
|
WCCP SERVER
On Nov 13, 2007 12:21 AM, Carlos Trujillo Jimenez <nergal888@hotmail.com>
wrote:
> Hi group.
>
> Lets suppose I have a router with a fastethernet0/0 interface, and there
> are
> hosts connected to its fastethernet 0/0 as well as a web cache engine in
> the
> same lan segmente, I mean both the web cache engine and the host are
> attached to the fastethernet0/0 interface.
>
> If I want to enable webcache redirect for all web connections originated
> in
> that lan segment and send it out to the web cache engine that is also
> connected to the lan segment.
> which of the following configurations are true??
>
>
> OPTION A:
>
> interface FastEthernet0/0
> ip wccp web-cache redirect in
>
>
> OPTION B:
>
>
> interface FastEthernet0/0
> ip wccp web-cache redirect out
> ip wccp web-cache redirect in
>
> Thanks group.
>
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-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
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