[c-nsp] WCCPv2 Cisco 7600 + mask assignment problems

[Mark Pace Balzan]

Steven,

My 0.02...

As far as I know C7600 will support various combinations of L2/GRE
forwarding and hash/mask assignment for WCCP v2. I assume you are
running 12.2SXF?  WCCP is negotiated between 7600 and your squid.  So if
squid doesn't support MASK (afaik it does not, but may be wrong), then
7600 will fallback to HASH. Same for L2/GRE.  Note that on 7600, the
L2/MASK combination is supported fully in hardware in the PFC, while
other combinations result in various levels of software forwarding via
the MSFC, which is when you need to keep a watch on the CPU of your 7600


Hope this helps


M


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Date: Mon, 11 Sep 2006 09:46:15 +0800
From: "Steven Wilton" <steven.wilton at team.eftel.com.au>
Subject: [c-nsp] WCCPv2 Cisco 7600 + mask assignment problems
To: <cisco-nsp at puck.nether.net>
Message-ID:
	
<F26CB22B0C062148955B0FEB2660234032DD81 at exch-perth.corporate.eftel.com>
	
Content-Type: text/plain;	charset="windows-1250"

I've seen some posts on this list regarding getting wccpv2 working with
a cisco 7600 using L2 redirect assignment.  I'm trying to get this
working under squid, and I believe I've got it correct according to the
draft wccp2 RFC that was published around 2000/2001.  My problem is that
the cisco router reports the following error while the WCCP negotiation
is ocurring:

3d21h: WCCP-EVNT:wccp_validate_wc_assignments: no mask data, exit

The problem is that this is in response to a HERE_I_AM packet.

Has anyone got a working wccp2 implementation that negotiates L2
redirects and mask assignments that I can use as a reference for squid?
The other option for me would be to get a packet dump of the wccp2
negotiation packets so I can look at what parts of the packet I'm
missing.

Regards

Steven Wilton

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