We are not using dialer profiles since there is only one call destination.
We have CHAP configured on the physical BRI interface and I see no problems
with it. 'debug ppp neg' and 'debug ppp auth' report successful CHAP
authentication. Is it possible for initial negotiation to work but for
subsequent negotiations to fail somehow?
>
>
> 2 quick questions..
>
> is there authentication on the isdn link?
> are u using the physical bri or dialer profiles?
>
> my guess is that u r using the physical inerface
> without authentication...go ahead and add
> authentication, should work like a charm...
>
>
> cheers
>
> Nnanna
> CCIE #6586
>
>
> --- John Neiberger <[EMAIL PROTECTED]> wrote:
> > I'm reposting this in the hopes that someone who
> > didn't see it before might
> > have some ideas about this. Heck, SWAGs, educated
> > guesstimates, or
> > telephone psychic impressions are also welcome. We
> > are completely stumped
> > about how to resolve this. I've even posted this
> > question on the CCO Q&A
> > Forum but I don't think anyone has been answering
> > questions on there lately.
> >
> > Here is the problem: we have an ISDN BRI backup
> > link between two sites, and
> > we want to run eigrp over the link when it's in use.
> > The problem is that
> > even though the line is not flapping, eigrp is
> > behaving as if it were
> > flapping. My side NEVER sees hellos from the other
> > side, but it does
> > receive updates. The other side receives my hellos,
> > but it thinks the link
> > is bouncing and that my router is intermittently
> > unavailable. My side never
> > establishes the other as a neighbor.
> >
> > I've used every debugging command I can find to no
> > avail. Nothing is giving
> > me any information that I don't already know. We
> > have no access lists
> > configured, except for distribute lists but that
> > shouldn't affect neighbor
> > relationships, should it?
> >
> > Here is sample debug output (debug eigrp neighbors
> > and debug eigrp packet):
> >
> > 3d01h: EIGRP: Sending HELLO on BRI0 nbr 10.120.226.2
> >
> >
> > 3d01h: AS 2, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ
> > un/rely 0/0
> >
> > 3d01h: EIGRP: Sending HELLO on BRI0 nbr 10.120.226.2
> >
> >
> > 3d01h: AS 2, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ
> > un/rely 0/0
> >
> > 3d01h: %LINK-3-UPDOWN: Interface BRI0:1, changed
> > state to up
> >
> > 3d01h: %LINEPROTO-5-UPDOWN: Line protocol on
> > Interface BRI0:1, changed state
> > to up
> > 3d01h: EIGRP: Sending HELLO on BRI0 nbr 10.120.226.2
> >
> >
> > 3d01h: AS 2, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ
> > un/rely 0/0
> >
> > 3d01h: EIGRP: Received UPDATE on BRI0 nbr
> > 10.120.226.2
> >
> > 3d01h: AS 2, Flags 0x1, Seq 67/0 idbQ 0/0
> >
> >
> > 3d01h: EIGRP: Neighbor(10.120.226.2) not yet found
> >
> >
> > 3d01h: EIGRP: Received UPDATE on BRI0 nbr
> > 10.120.226.2
> >
> > 3d01h: AS 2, Flags 0x1, Seq 67/0 idbQ 0/0
> >
> >
> > 3d01h: EIGRP: Neighbor(10.120.226.2) not yet found
> >
> >
> > 3d01h: %ISDN-6-CONNECT: Interface BRI0:1 is now
> > connected to 303xxxxxx
> > theirrouter
> > 3d01h: EIGRP: Sending HELLO on BRI0 nbr 10.120.226.2
> >
> >
> > 3d01h: AS 2, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ
> > un/rely 0/0
> >
> > 3d01h: EIGRP: Received UPDATE on BRI0 nbr
> > 10.120.226.2
> >
> > 3d01h: AS 2, Flags 0x1, Seq 67/0 idbQ 0/0
> >
> >
> > 3d01h: EIGRP: Neighbor(10.120.226.2) not yet found
> >
> >
> > 3d01h: EIGRP: Received UPDATE on BRI0 nbr
> > 10.120.226.2
> >
> > 3d01h: AS 2, Flags 0x1, Seq 67/0 idbQ 0/0
> >
> >
> > 3d01h: EIGRP: Neighbor(10.120.226.2) not yet found
> >
> >
> > 3d01h: EIGRP: Sending HELLO on BRI0 nbr 10.120.226.2
> >
> >
> > 3d01h: AS 2, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ
> > un/rely 0/0
> >
> > 3d01h: EIGRP: Sending HELLO on BRI0 nbr 10.120.226.2
> >
> >
> > 3d01h: AS 2, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ
> > un/rely 0/0
> >
> > 3d01h: EIGRP: Received UPDATE on BRI0 nbr
> > 10.120.226.2
> >
> > 3d01h: AS 2, Flags 0x1, Seq 67/0 idbQ 0/0
> >
> >
> > 3d01h: EIGRP: Neighbor(10.120.226.2) not yet found
> >
> >
> > Here is some info from the remote side:
> >
> > theirrouter#
> > 1d02h: EIGRP: Retransmission retry limit exceeded
> > 1d02h: EIGRP: Holdtime expired
> > 1d02h: EIGRP: Neighbor 10.120.226.1 went down on
> > BRI0/0
> > 1d02h: EIGRP: New peer 10.120.226.1
> >
> > theirrouter#sho ip eigrp neighbors
> > IP-EIGRP neighbors for process 2
> > H Address Interface Hold Uptime
> > SRTT RTO Q Seq
> > (sec)
> > (ms) Cnt Num
> > 0 10.120.226.1 BR0/0 12
> > 00:00:38 0 5000 1 0
> >
> > 1d02h: EIGRP: Retransmission retry limit exceeded
> > 1d02h: EIGRP: Holdtime expired
> > 1d02h: EIGRP: Neighbor 10.120.226.1 went down on
> > BRI0/0
> > 1d02h: EIGRP: New peer 10.120.226.1
> >
> > I'm not getting any errors on the line, and further
> > debugging (isdn q921,
> > isdn q931, ppp error, ppp auth, ppp neg,
> > bri-interface) does not show any
> > problems whatsoever. I've tried ping tests with
> > different payloads and they
> > succeeded wonderfully.
> >
> > I've also made sure that we are in the same 'AS'.
> > We are running 12.1(5) on
> > a 2520, they run 12.0(5) on a 2524. I've searched
> > CCO for any configuration
> > hints or bug reports, and I've read through Doyle's
> > Routing TCP/IP section
> > on eigrp and I can find no possible explanation for
> > this behavior.
> >
> > Any takers? ideas? hints? tips? Do you know a
> > good psychic or witch
> > doctor? Perhaps a good psychiatrist, instead? :-)
> >
> > For anyone who has taken the time to read through
> > all of this, I thank you.
> >
> > Regards,
> > John
> >
> >
> >
> >
> >
> >
> _______________________________________________________
> > Send a cool gift with your E-Card
> > http://www.bluemountain.com/giftcenter/
> >
> >
> > _________________________________
> > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to
> [EMAIL PROTECTED]
>
>
> =====
> Nnanna Obuba CCIE # 6586
> www.nantech.com
> Online lab for CCIE preparation
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Photos - Share your holiday photos online!
> http://photos.yahoo.com/
_______________________________________________________
Send a cool gift with your E-Card
http://www.bluemountain.com/giftcenter/
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
