>Chuck,
>
>You are not crazy. ;-) I have seen this with IOS 12.0, and it totally
>confounded me the first time I saw it. It seems to happen when the serial
>interfaces are configured and brought up BEFORE the cables are attached.
>Save your config, then power cycle the boxes.
>
>HTH,
>Pamela
Thank you! It's always good for the community as a whole when a
serial killer is identified.
>
>On Tue, 13 Jun 2000, Chuck Larrieu wrote:
>
> > Now that it appears I can post again, let me try this again. Discovered the
> > problem Saturday. Have not been able to ask for help.
> >
> > Got a good one for you all to ponder.
> >
> > I am in the process of reassembling my lab. Routers have been off
>line for a
> > couple of weeks. Friday I brought two back on line to test some
> > configurations for someone. Discovered that I was unable to route.
> >
> > Here is what I know:
> >
> > Serial interfaces on both routers are up. I know this because:
> >
> > 1) Show CDP neighbor reveals the other router, both interfaces,
>both routers
> > 2) Debug serial interface and debug serial events shows
>communication across
> > the interfaces
> > 3) Show interface reveals the interface is up and the protocol is up, both
> > interfaces, both routers
> > 4) On either router I can ping the directly connected interfaces of the
> > other router
> > 5) Oh, and IPX and AppleTalk routing work just fine. I see all networks for
> > both protocols.
> >
> > I also know that the routing protocols are set up correctly. Honest, gang.
> > I'm not sure how many more ways I can check an IGRP configuration with one
> > network in it. Let alone EIGRP and BGP ( the lab configuration I was
> > testing ) Besides, as I stated, I can ping the each router serial interface
> > from the other router.
> >
> > I also found that one time, if I reloaded with an empty startup config, and
> > configured from the setup, that I would have routing. Admittedly I have not
> > done too many more experiments along this line.
> >
> > Oh, one last thing. IP routing works fine and dandy across the ethernet
> > interfaces. I.e if I plug both router ethernets into the same hub, routing
> > is great. Even the BGP processes establish neighbor relationships with the
> > right information..
> >
> > Well, I'm frustrated as hell. And out of ideas. I have gone so far as to
> > reload images into the routers. The only other thing that is a
>wild guess is
> > that two of the three routers were the recipients of new images via Cisco's
> > Router Software Loader. But the other one was updated the old fashioned
> > way - TFTP. Makes no sense to me that this would effect the ability of the
> > IOS to see the serial ports. I suppose strange things have happened.
> >
> > I do find it rather incredible that every serial interface on every single
> > one of my routers has failed at exactly the same time. And failed for IP
> > only.
> >
> > Anyone have any ideas? Is there some secret command within IOS version 12.x
> > that someone is keeping secret from me? I continue to search on
>CCO, but CCO
> > is hiding this secret well.
> >
> > Chuck
> >
> >
> > ___________________________________
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> >
>
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