From: Yasser Aly (yasser.aly@noorgroup.net)
Date: Wed Jul 07 2004 - 16:06:41 GMT-3
Hi Marvin,
No, I am not using sub-interface and I am not allowed to do any config
relative to this task on the 3550. Config is to be made on the router
Ethernet interface directly.
So following your explanation mentioned below I guess what I can do is to
apply " ip wccp redirect in " on that Ethernet, where this Ethernet is the
only connection for this router to the internal/external world.
Am I right here ?
Thanks,
Yasser
-----Original Message-----
From: Marvin Greenlee [mailto:marvingreenlee@yahoo.com]
Sent: Wednesday, July 07, 2004 9:58 PM
To: Yasser Aly
Cc: ccielab@groupstudy.com
Subject: RE: WCCP web cache redirect ???
The Cache server sets up a connection to the router, with a heartbeat for
WCCP.
The location of the cache server with respect to the router has nothing to
do with the in/out configuration of WCCP on the router.
The in/out is per interface and is for the direction of the traffic. If you
have a router with an inside interface of eth0 and an outside interface of
eth1, with hosts on eth0:
You could redirect 'in' on eth0
or
You could redirect 'out' on eth1
Traffic from the hosts would be passing through the router 'in eth0' and
'out eth1'. It is recommended to redirect in, so that the router doesn't
have to process the traffic twice.
In the scenario where you have a single ethernet, are you using
subinterfaces for the connection between the router and the switch? If so,
WCCP can be configured on a subinterface:
interface Ethernet0/0.1
encapsulation dot1Q 1 native
ip wccp web-cache redirect in
Is the switch a 3550? If so, you can configure WCCP inbound on the ports
where the hosts are attached.
Marvin Greenlee, CCIE #12237
Network Learning, Inc.
marvin@ccbootcamp.com
--- Yasser Aly <yasser.aly@noorgroup.net> wrote:
> Hi Marvin,
>
> Suppose that you have the following topology:
> Switch-------R1
>
> R1 has only one Ethernet to carry all its incoming and outgoing
> traffic. Now If we are to configure redirection of internal hosts
> requests to the cache engine would it be redirect in or redirect out ?
> Take into account the
> following scenarios:
>
> A) The cache engine is located on the same VLAN where internal hosts
> resides.
> B) The cache engine is located on a different VLAN.
>
> I am confused here because the router has only one Ethernet to carry
> either incoming or outgoing traffic.
>
> Waiting for you reply.
> Yasser
>
******
> See also:
> WCCP Implementation PDF Presentation.
>
http://www.cisco.com/warp/public/732/Tech/switching/wccp/docs/WCCP_Implement
ation.pdf
>
>
> Sample config for WCCP with a 3550 and a CE
>
http://www.cisco.com/en/US/products/hw/contnetw/ps761/products_configuration
_example09186a0080160b28.shtml
>
> Cisco WCCP Presentations
>
http://www.cisco.com/warp/public/732/Tech/switching/wccp/presentations.shtml
>
>
> Marvin Greenlee, CCIE #12237
> Network Learning, Inc.
> marvin@ccbootcamp.com
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