[42321] in North American Network Operators' Group
Re: Anyone use Cisco Policy Routing?
daemon@ATHENA.MIT.EDU (Mark O'Brien)
Fri Sep 14 20:18:32 2001
Date: Fri, 14 Sep 2001 17:17:56 -0700
From: "Mark O'Brien" <mobrien@digitalisle.net>
To: "Stephen J. Wilcox" <steve@opaltelecom.co.uk>
Cc: nanog@merit.edu
Message-ID: <20010914171756.C3400@quark.digitalisle.net>
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In-Reply-To: <Pine.LNX.4.21.0109141822160.32553-100000@staff.opaltelecom.net>; from steve@opaltelecom.co.uk on Fri, Sep 14, 2001 at 06:28:28PM +0100
Errors-To: owner-nanog-outgoing@merit.edu
Steve,
I've seen this problem happen w/ policy routing and CEF enabled.
You need to turn off CEF if this is happening to you. Cisco has a bug out
on this, if I can find it in my notes I'll send it.
Mark.
On Fri, Sep 14, 2001 at 06:28:28PM +0100, Stephen J. Wilcox wrote:
>
> Hi,
> I'm trying to setup a platform that will send different types of packets
> over different routes, theres a good example of what I'm doing at
>
> http://www.cisco.com/warp/public/cc/pd/ibsw/ibdlsw/prodlit/dlsw5_rg.htm
>
> under 'Directing Traffic Flows with Policy Routing'
>
> Basically, it doesnt work, I'm on IOS 12.0(3) and not sure if its a bug or
> just me.
>
> I'm using policy routing and route-maps to identify certain types of
> traffic by tcp port number using extended access-lists and then change the
> next-hop.
>
> Whats happening is that it works okay until the above access-list makes a
> match, after that all packets to that IP address regardless of port number
> get sent via the modified next hop.
>
>
> I'm wondering if I've got
> a) an IOS bug
>
> or if
>
> b) I need to turn off some kind of route caching/cef that works at layer 3
> altho I've disabled everything I could think of on the interface
>
> Any thoughts?
>
> Steve
>
> --
> Stephen J. Wilcox
> IP Services Manager, Opal Telecom
> http://www.opaltelecom.co.uk/
> Tel: 0161 222 2000
> Fax: 0161 222 2008
