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Re: More 6509 problems...

  • From: Rodney Dunn
  • Date: Sat Feb 03 10:22:35 2001

On Fri, Feb 02, 2001 at 04:23:40PM -0800, Ulf Zimmermann wrote:
> On Thu, Feb 01, 2001 at 06:21:48PM -0500, Rodney Dunn wrote:
> > 
> > Danny,
> > 
> > The interface status should be independent of
> > the swithcing path.  I've never seen the line
> > state be affected by the switching mechanism
> > (although I have seen the opposite).
> > 
> > Can you email me the case# you had so I can take 
> > a look?
> 
> I have, because the line state can be controlled by the keepalive.
> If the keepalive don't get through because of the switching path .....
> 

Typically we refer to fast, optimum, autonomous, cef as switching
paths through the box.  Keepalives are generated at process level
(yeah..I can see the argument that process level switching is
a valid switching path but definitely not the fastest).

This problem was not a *direct* result of the switching path preventing
the keeaplive from being switched to the wire.  As Danny stated,
it was an issue with the flexwan not being able to communicate with
the MSFC.


> > 
> > rodney
> > 
> > 
> > On Tue, Jan 30, 2001 at 02:22:21PM -0600, Danny Snyder wrote:
> > > 
> > > Ya got me on that one....Cisco didn't really say why and I didn't think to
> > > ask them either....
> > > 
> > > --Danny
> > > 
> > > 
> > > 
> > > 
> > > -----Original Message-----
> > > From: Kenny Sallee [mailto:k_sallee@yahoo.com]
> > > Sent: Tuesday, January 30, 2001 11:28 AM
> > > To: agudgeon@firstnet.co.uk; 'Danny Snyder'
> > > Cc: nanog@merit.edu
> > > Subject: Re: More 6509 problems...
> > > 
> > > 
> > > How would CEF cause an interface to be up/down?  Just curious....Kenny
> > > 
> > > ----- Original Message -----
> > > From: "Alison Gudgeon" <agudgeon@firstnet.co.uk>
> > > To: "'Danny Snyder'" <dsnyder@nowdocs.com>; <nanog@merit.edu>
> > > Sent: Tuesday, January 30, 2001 8:36 AM
> > > Subject: RE: More 6509 problems...
> > > 
> > > 
> > > >
> > > > Hi
> > > >
> > > > Hybrid IOS
> > > >
> > > > I've got IP CEF DISTRIBUTED set globally.  Did you have it enabled or
> > > > disabled on the T3 interface?
> > > >
> > > > Ali
> > > >
> > > > -----Original Message-----
> > > > From: Danny Snyder [mailto:dsnyder@nowdocs.com]
> > > > Sent: 30 January 2001 16:21
> > > > To: agudgeon@firstnet.co.uk; nanog@merit.edu
> > > > Subject: RE: More 6509 problems...
> > > >
> > > >
> > > > Alison,
> > > >
> > > > I've had VERY similar problems with a 6509 (Sup 1a + MSFC2) with a FlexWAN
> > > > and a PA-2T3+.  After spending the better part of two weeks on the phone
> > > > with Cisco, we finally determined that ip cef distributed needed to be
> > > > turned on in global configuration.
> > > >
> > > > Also, are you running native IOS or Catalyst OS on the Supervisor and IOS
> > > on
> > > > the MSFC ?
> > > >
> > > > Danny Snyder
> > > > Network Administrator
> > > > NowDocs, Inc.
> > > >
> > > >
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> > > > Alison Gudgeon
> > > > Sent: Tuesday, January 30, 2001 10:18 AM
> > > > To: nanog@merit.edu
> > > > Subject: More 6509 problems...
> > > >
> > > >
> > > >
> > > > Hi,
> > > >
> > > > Is anyone doing the following:
> > > >
> > > > 6509 (supervisor 1a + msfc) - with a flexWAN adapter to take a Packet Over
> > > > Sonet OC-3 card.
> > > >
> > > > I'm having great problems getting up/up on the interface, the current
> > > > situation is up/down, a hardware loop at the telco kit brings the line
> > > up/up
> > > > but otherwise just up/down.  Config is default I've just put IP's on.
> > > >
> > > > I'm running very new code - 12.1(4)E1
> > > >
> > > > many thanks in advance for any help.
> > > >
> > > >
> > > > Kind Regards
> > > >
> > > >
> > > > Alison
> > > >
> > > >
> > > 
> 
> -- 
> Regards, Ulf.
> 
> ---------------------------------------------------------------------
> Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-769-2936
> Alameda Networks, Inc. | http://www.Alameda.net  | Fax#: 510-521-5073





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