NSE-1 H/W will come up fine on non-supported IOS branch, but PXF
functionality will be disabled (NSE will come up as NPE default)
As far as PXF concern - you need to have the correct feature
that was announced, else the PXF will punt the packet to RP for
CEF switching instead of accelerating it.
I did see one issue with PXF regarding to ISL (not supported,
and should punt, but instead we dropped it due to un-calculated
inner CRC).
Please provide detail of PXF problem and IOS version if you
have problem with NSE-1/PXF.
Tom
> >Resent-Date: Mon, 19 Mar 2001 17:11:50 -0500
> >Date: Mon, 19 Mar 2001 17:09:05 -0500 (EST)
> >From: George Robbins <grr@shandakor.tharsis.com>
> >To: c.reichert@resolution.de, sthaug@nethelp.no
> >Subject: Re: [nsp] Experience with NSE-1 and IOS 12.0S?
> >Cc: cisco-nsp@puck.nether.net, grr@shandakor.tharsis.com
> >Resent-From: cisco-nsp@puck.nether.net
> >X-Mailing-List: <cisco-nsp@puck.nether.net> archive/latest/5754
> >X-Loop: cisco-nsp@puck.nether.net
> >Resent-Sender: cisco-nsp-request@puck.nether.net
> >
> >Hmmm... We have a couple running cef+pxf enabled and haven't
> >seen any CEF bugs, and we've lived thru a lot of CEF bugs in
> >the past. Not to say there aren't bugs, but I say it's not a
> >dead-in-the-water kind of thing...
> >
> >As far as switching performance, the boost is suposed to come
> >with the "high touch" stuff where you're looking at more than
> >the IP address for routing decisions, otherwise you might as
> >well just get a NPE-300/400.
> >
> > George
> >
> > > From c.reichert@resolution.de Mon Mar 19 16:26:34 2001
> > > X-Authentication-Warning: magrathea.resolution.de: Host
> > t1o311p80.teliauk.com [195.12.226.80] claimed to be resolution.de
> > > Date: Mon, 19 Mar 2001 22:54:19 +0100
> > > From: Christian Reichert <c.reichert@resolution.de>
> > > Organization: resolution GmbH
> > > X-Accept-Language: en
> > > To: sthaug@nethelp.no
> > > CC: grr@shandakor.tharsis.com, cisco-nsp@puck.nether.net
> > > Subject: Re: [nsp] Experience with NSE-1 and IOS 12.0S?
> > > References: <200103191649.LAA03763@shandakor.tharsis.com>
> > <7189.985028111@verdi.nethelp.no>
> > >
> > > Hi !
> > >
> > > You can even use it with earlier IOS Versions, they might report
> > > 'unknown NPE' but it still works - even more stable than some 12.1E
> > > versions :-)
> > > You certainly won't have pxf nor any support from Cisco.
> > >
> > > One more thing to mention about NSE-1, as long as PXF is turned on CEF
> > > (Cisco Express forwarding) is broken ! (all versions so far)
> > > This means if you use the 7200 as a MPLS PE, it won't work ... no pxf
> > > solves the problem.
> > >
> > > Another thing, some of our tests showed that with pxf turned on the
> > > switching performance is less than without pxf ...
> > >
> > > Cheers,
> > > Chris
> > >
> > > sthaug@nethelp.no wrote:
> > > >
> > > > > I supsect the PXF technology was developed on a 12.1 base, and isn't
> > > > > going to be retrofitted to 12.0. Someone (maybe from Cisco) mentioned
> > > > > that the NSE board would work as if it were an NPE-300 under releases
> > > > > where the NSE-1/PXF wasn't "supported"...
> > > >
> > > > That is indeed our experience with NSE-1 and 12.0(15)S1 - behaves like
> > > > an NPE-300.
> > > >
> > > > Steinar Haug, Nethelp consulting, sthaug@nethelp.no
> > >
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