I would start looking at the following:
Upgrade to at least 12.0.9. There are a number of bugs
that are in the 11.2 series that might impact you - a
sweep of the bug list would be in order.
Make sure that the other router did not alter their
timers/parameters.
Place an analyzer on the link or, outside of
production, run a debug from the console. You should
easily see the purge or other event.
The oddity here is the timing - 120 seconds is not a
'common' EIGRP timer issue - 5 seconds for T/R and
blah, blah, blah...
There is an error for the TRIP with 11.2.16 that you
might want to look at in CCO - they don't note a
timer, but at a high level there may be a link.
--- Andrew Larkins <[EMAIL PROTECTED]> wrote:
>
>
> -----Original Message-----
> From: Andrew Larkins
> Sent: 01 November 2000 12:57
> To: 'Phil Barker'
> Subject: RE: EIGRP Neighbour - keeps flapping
>
>
> the one router uses 11.2-18 desktop plus. As for the
> other, it is owned by a
> governemt organisation to which I have no access.
> We have already mentioned to the client about
> software upgrades, but this
> may only happen much further down the line
>
> -----Original Message-----
> From: Phil Barker
> [mailto:[EMAIL PROTECTED]]
> Sent: 01 November 2000 12:38
> To: Andrew Larkins; Cisco Mail List
> Subject: Re: EIGRP Neighbour - keeps flapping
>
>
> Andrew,
> What IOS version are you running on ?
> Do you have any other Routers on any other Token
> Ring
> segments ?
>
> I believe that major surgery was implemented in IOS
> 11.3 for EIGRP not sure how that would effect Token
> Ring though.
>
> Have you analysed the Token Ring Segment for errors
> e.g beaconing etc ?
>
> It is possible that some external event is causing a
> Ring purge every 2 minutes and stopping the EIGRP
> multicast packets getting through thus, losing your
> neighbor relationship.
>
> HTH
>
> Phil.
> --- Andrew Larkins <[EMAIL PROTECTED]> wrote:
> >
> HI all,
> >
> > I have to routers connected on a token ring
> segment.
> > Every 120seconds
> > exactly they lose the neighbourship. This is then
> > established immediately
> > but keeps flapping. There have been no changes to
> > the default EIGRP config
> > here in relation to timers.
> >
> > Any idea's????
> >
> >
> > Andrew Larkins
> > BCom, CCNA, CCDA
> > Usko Communications
> > Tel: +2711 800-9300
> > Fax: +2711 800-9495/6/7/8/9
> > Cell: +2783-656-7214
> > Email: [EMAIL PROTECTED]
> > OR [EMAIL PROTECTED]
> >
> >
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>
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