From: Scott Morris (swm@emanon.com)
Date: Tue Nov 23 2004 - 15:46:34 GMT-3
No worries.
Scott
_____
From: mani poopal [mailto:mani_ccie@yahoo.com]
Sent: Tuesday, November 23, 2004 1:44 PM
To: swm@emanon.com; 'Eircom.Net'; ccielab@groupstudy.com
Subject: RE: WCCP Question
Hi Scott,
As always, very good explanation and thanks for the information
Mani
Scott Morris <swm@emanon.com> wrote:
You will redirect once, and once only.
The interface you put the redirect command on (as has been discussed
previously) will depend on what you want to accomplish.
A router has:
S0/0 to the internet
E0/0 to VLAN A
E0/1 to VLAN B
E1/0 to VLAN C
If you want you cache only VLAN A's traffic, you have two options.
1. simply put redirect in on E0/0 (easiest)
2. put redirect out on S0/0 but with an ACL to only cache the clients
sourcing from VLAN A
If you want to cache VLAN A and B's traffic, you still have two options.
1. put redirect in commands on both E0/0 and E0/1
2. put redirect out on S0/0 but use an ACL to exclude VLAN C's sources from
the caching
If you want to cache for all of the VLANs, you still have two options.
1. put redirect in on each of the three ethernet interfaces
2. put redirect out on the serial interface
If the web cache exists on the same interface as clients do, it is
recommended to put "ip route-cache same-interface" on that interface. This
is not required, but will speed up the processing of packets (fast switching
versus process switching). Otherwise, the location of the web cache really
has no bearing on anything. The redirect commands are always configured
from the perspective of the router with no respect to where the cache is
located.
HTH,
Scott Morris, MCSE, CCDP, CCIE4 (R&S/ISP-Dial/Security/Service Provider)
#4713, JNCIP, CCNA-WAN Switching, CCSP, Cable Communications Specialist, IP
Telephony Support Specialist, IP Telephony Design Specialist, CISSP
CCSI #21903
swm@emanon.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of mani
poopal
Sent: Tuesday, November 23, 2004 11:10 AM
To: Eircom.Net; ccielab@groupstudy.com
Subject: Re: WCCP Question
Hi Group,
Derek question is very good one. I have the same doubt, I think ip wccp
redirect in|out tells the router in which direction to look for http
request. Brian/Scott/others , if you can put some thoughts on this for which
interfaces need ip wccp web-cachse redirect in and which interfaces need ip
wccp web-cache redirect out, will be great.(these are the interfaces in
question) so E1--Local Lan with clients
E2--Web-cache
S0-connected to ISP
PS:pls shed light if e2 interface also has clients in addition to web cache
thanks
Mani
"Eircom.Net" wrote:
Hi
I have just one simple question that you may be able to help me with here
regarding WCCP. As an example I have this situation. One router with 2
Ethernet and one serial. Ethernet 1 Connected to main lan and Ethernet 2
connected to WEB Cache. And seial to the internet.
My question is that on the Ethernet connected to the Web Cache Ethernet 2. I
configured IP WCCP Redirect IN|OUT. My question is relation to the IN|OUT.
Can somebody please explain to me what the difference is between these two
values, or do I have this configued wrong, and if so what way would this be
configured.
My thinking is as follows. If the Web Cache is connected to Ethernet 2, I
have two options, configure ip wccp redirect out on that interface or on
Ethernet 1 connected to the main lan configure ip wccp redirect in, which is
a better solution because it can be fast switched and the ip wccp redirect
out on ethernet 2 cant.
cheers
Derek
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