The PVC is working perfectly, except for CDP. It's configured exactly like
the 89 other subinterfaces on that major interface, so I doubt it's a
configuration issue, but it still may be. The remote side has two PVCs on
one major interface and CDP is working on one subinterface only and they,
too, are configured exactly the same except for DLCI and IP address.
Keep throwing out ideas, this is a stange one! :-)
> John,
>
> Is it just CDP not working or is the whole PVC showing as inactive?
I've
> seen where if LMI was configured incorrectly at the remote end when the
> router was first brought up it would come up but after a minute or so go
> down because it wasn't receiving lmi keepalives from the switch. In this
> case it was a telco switch problem and I do know that LMI is supposed to
be
> autosensing with the newer software.
>
> If it is just CDP down I would have suggested something to do with the
> timers but you said the remote end isn't receiving any packets at all?
> Hmmm.
>
> Stumper.
>
> Just throwing out some ideas for ya. Let us know when you get it
figured
> out.
>
> Thanks
> Cory
>
> -----Original Message-----
> From: John Neiberger [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, July 12, 2000 12:44 PM
> To: [EMAIL PROTECTED]
> Subject: RE: CDP not working on subinterface
>
>
> We use entirely point-to-point subinterfaces, and we have no special
> configuration on them regarding broadcasts. On this particular major
> interface, there are 90 subinterfaces and CDP is working just fine on all
> but two of them. They all have identical configs except for the DLCIs
and
> IP addresses. "show cdp int" shows that CDP packets are being sent, but
> they aren't being received at the opposite end, according to "debug cdp
> packets".
>
> Another oddity about this is that it worked correctly when I first
brought
> the circuit up for about a minute or so, and then it stopped. Very
> strange...
>
> > This is purely a guess.......
> >
> > Are you allowing broadcasts across the PVC by using the broadcast
keyword
>
> > on the frame-relay map command? CDP sends to a multicast address.
> >
> > Priscilla
> >
> >
> >
> > At 08:50 PM 7/11/00, John Neiberger wrote:
> > >No, I haven't done that, but I did "show cdp int" and the router said
> that
> > >it was sending cdp packets out that interface. Both routers on each
end
> of
> > >the link reported this. I'll try debugging tomorrow.
> > >
> > >Thanks for the tip!
> > >
> > >John
> > >
> > > > Did you run "debug cdp" to verify that it is being sent?
> > > >
> > > > -Mag
> > > >
> > > > --------------------------------------------------------
> > > > Magnus Thorne
> > > > eVoice, Inc.
> > > > 1394 Williow Road
> > > > Menlo Park, CA 94025
> > > > Direct: 650.330.3974
> > > > Main: 650.330.3700
> > > > Fax: 650.330.3901
> > > > --------------------------------------------------------
> > > > eVoice. The best voicemail you can buy is free.
> > > > Sign up at www.evoice.com or call 1.800.GET.EVOICE
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: John Neiberger [mailto:[EMAIL PROTECTED]]
> > > > Sent: Tuesday, July 11, 2000 3:08 PM
> > > > To: [EMAIL PROTECTED]
> > > > Subject: CDP not working on subinterface
> > > >
> > > >
> > > > We do not have CDP disabled anywhere on our routers, either
globally
> or
> > >at
> > > > the interface level. I brought up a new PVC today and at the
remote
> side
> > >I
> > > > could see both PVCs to that router. After a few seconds, though,
> one of
> > > > them disappeared from the "show cdp neighbors" output. No
changes
> were
> > >made
> > > > to configs at either side, it just did this on it's own. This
> particular
> > > > PVC is terminating at a subinterface on both routers, and other
> > > > subinterfaces on the major interfaces at each end still report
their
> cdp
> > > > neighbors correctly; the problem is only on this particular
> > >subinterface.
> > > >
> > > > I have noticed this in the past with a different PVC, so it's
> happened at
> > > > least twice in our network.
> > > >
> > > > any ideas why it works temporarily and then quits?
> > > >
> > > > TIA,
> > > > John Neiberger
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________________
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> > >
> > >
> > >_______________________________________________________
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> >
> > ________________________
> >
> > Priscilla Oppenheimer
> > http://www.priscilla.com
> >
> > ___________________________________
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>
>
>
>
>
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