Perhaps look at your configs for isdn dial up.
Is there any dial up involved with these routers ?
Perhaps something is causing the isdn to kick in,
(dialer list defined properly?)
with the default timeout for isdn being 120sec.,
the line will drop,
but is brought back up immediately.
this could stuff up the eigrp routes/neighbours,
causing the flapping.>
MandyD
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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