From: Derek Fage (Derekf@xxxxxxxxxxx)
Date: Tue May 04 1999 - 17:21:17 GMT-3
Joel,
Thanks for the info.
I've used the show frame-relay pvc and map commands, and the cdp stuff is
all working fine. I see the DLCI states change when connected to the
console.
What I'm after is a deeper understanding of _how_ the router figures out
that the DLCI has gone from ACTIVE to INACTIVE or whatever. Initially I
thought it would be in debug frame-relay lmi stuff, but I can't spot
anything there.
I've tried as many of the debug frame-relay commands (events, verbose
etc...), but cannot quite spot where I should be looking. It's almost as if
I am looking for a 'debug frame-relay pvc' command.
Any further ideas ?
Derek...
> -----Original Message-----
> From: Ekis, Joel [SMTP:Joel.Ekis@Connect.Xerox.com]
> Sent: 04 May 1999 19:05
> To: Derek Fage; ccielab@groupstudy.com
> Subject: RE: Frame Relay debugging issues
>
> show frame-relay pvc
> Identifies the PVC's status: USAGE = UNUSED means the router to switch LMI
> is OK as you know, but the PVC is not carrying data.
>
> show frame-relay map
> Your PVC will no longer be in the dynamic map table. Not useful if you
> statically map.
>
> show cdp neighbor
> If 'cdp enable' is on both ends & equipment is Cisco (obviously) you will
> see layer 3 info of other end.
>
> Joel Ekis, CCNA, CCDA
> Xerox Connect
> Sr. Enterprise Consultant/Enterprise Network Services
> Phone: 913-696-0888, x234
> Pager: 800-697-0359
> joel.ekis@connect.xerox.com <mailto:joel.ekis@connect.xerox.com>
>
>
> -----Original Message-----
> From: Derek Fage [SMTP:Derekf@itexjsy.com]
> Sent: Tuesday, May 04, 1999 10:09 AM
> To: ccielab@groupstudy.com
> Subject: Frame Relay debugging issues
>
> Hi all,
>
> I'm doing some F/R work in my little lab at the moment, and am
> looking for
> some input.
>
> I have one router configured as a FR switch, and 2 x 2503 routers
> configured
> up with point-to-point sub interfaces.
>
> All is workinf fine, but I am trying to figure out how to do some
> troubleshooting.
>
> If I power off one of the 2503's, the DLCI on the other router goes
> inactive, and the s0.1 subinterface goes down. This is exactly what
> I would
> expect, but I cannot figure out which debug commands I can use to
> run traces
> as this is happening.
>
> If I debug the LMI, all looks fine, as I see S0 LMI info as opposed
> to s0.1
> info, and S0 onviously stays up. What sort of debugging commands
> would I use
> to see how the router establishes that the DLCI has gone inactive ?
>
> Regards,
>
> Derek...
>
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