From: shiran guez (shiranp3@gmail.com)
Date: Tue Feb 24 2009 - 05:09:55 ARST
As Expand's 3rd Level Support Eng I am happy to see you enjoy the benefits
of our product
On Mon, Feb 23, 2009 at 2:19 AM, ALL From_NJ <all.from.nj@gmail.com> wrote:
> (had to practice my doc look-up skills ...)
>
> Link to WCCP (watch the ugly word wrap):
>
>
> http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_wccp_ps6350_TSD_Products_Configuration_Guide_Chapter.html
>
> From this link:
> Understanding WCCP
>
> WCCP uses Cisco Content Engines (or other content engines running WCCP) to
> localize web traffic patterns in the network, enabling content requests to
> be fulfilled locally. Traffic localization reduces transmission costs and
> download time.
>
> WCCP enables Cisco IOS routing platforms to transparently redirect content
> requests. The main benefit of transparent redirection is that users need not
> configure their browsers to use a web proxy. Instead, they can use the
> target URL to request content, and have their requests automatically
> redirected to a content engine. The word "transparent" in this case means
> that the end user does not know that a requested file (such as a web page)
> came from the content engine instead of from the originally specified
> server.
> ~~~~~~~~~~~~~~~
>
> We used to use this protocol to redirect traffic to an Expand Accelerator.
> We only wanted to direct specific types of traffic to our unit, and not all
> traffic. By configuring this in the customer network, we were able to come
> in and set in a demo unit without reconfiguring the client PCs. Kind of
> cool ... and was transparent to the desktop tech support staff and the end
> users.
>
> Would suggest to practice some of the configs, but not to worry about too
> much ... the config guide has several config examples.
>
> HTH,
>
> Andrew Lee Lissitz
>
>
>
>
> On Sun, Feb 22, 2009 at 2:56 PM, shiran guez <shiranp3@gmail.com> wrote:
>
>> Basiclly WCCP web cach control protocol was called like that as in ver 1
>> it
>> was relevant for web traffic but the version 2 has many enahcments
>> additionly like support for tcp udp icmp support for multiple cache
>> engines.
>> and more. the basic concept behind wccp in the router side is a
>> sophisticated PBR (policy based routing) allowing to redirect traffic to a
>> network node for further manipulation. the server side of the WCCP mean
>> the
>> network node that the traffic was redirected to can be a cache engine for
>> web like squid or cisco cache engine or can be even Expand's network
>> Accelerator (there are more options like juniper and others).
>>
>> The directions in the statements under the interface is the direction of
>> the
>> traffic in relation to the interface so if you say redirect in it mean
>> that
>> traffic comming in to the interface will be intercepted and redirect out
>> mean that traffic on the way out from the interface will be redirected
>> just
>> like ACL assigments.
>>
>>
>>
>>
>> On Sun, Feb 22, 2009 at 9:29 PM, Tharak Abraham <tharakabraham@gmail.com
>> >wrote:
>>
>> > Hi,
>> >
>> > Could you please brief here the concept of packet redirection on and
>> > outbound and inbound interface ?
>> > Got confused with the wccp commands "ip wccp web-cache redirect out" and
>> > "ip
>> > wccp web-cache redirect in"
>> >
>> > Thanks in advance,
>> >
>> > BR,
>> > Tharak.
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
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>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>> --
>> Shiran Guez
>> MCSE CCNP NCE1 JNCIA-ER CCIE #20572
>> http://cciep3.blogspot.com
>> http://www.linkedin.com/in/cciep3
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>>
>>
>>
>>
>>
>>
>>
>>
>
>
> --
> Andrew Lee Lissitz
> all.from.nj@gmail.com
>
-- Shiran Guez MCSE CCNP NCE1 JNCIA-ER CCIE #20572 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3Blogs and organic groups at http://www.ccie.net
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