From: Donny MATEO (donny.mateo@xxxxxxxxxxxxxxxxxx)
Date: Tue Jul 23 2002 - 01:43:29 GMT-3
I'm affraid I dont' quite understand this. I have a perfectly running
demand circuit under area 0 and it's not a stubby area either.
What's the issue of using demand circuit under area 0 ?As far as I know is
that if your topology is stable that it shouldn't have triggered the line.
If changing your area into totally stub area solve the problem , perhaps
it's because you have an unstable topology in the first place.
Donny
Joe A
<GroupStudy@comca To: "'Ivan'" <limmt@lycosa
sia.com>
st.net> cc: ccielab@groupstudy.com
Sent by: Subject: RE: OSPF keeps bringin
g up DDR across asyn line
nobody@groupstudy
.com
23-07-2002 12:09
Please respond to
Joe A
You could've also done a route filter to stop the distance vector protocol
from causing an LSA. Another message referenced an unstable IGP, but don't
think that is always the case - the LSA is probably generated by the normal
periodic advertisments that would still happen in a completely stable
environment.
-----Original Message-----
From: Ivan [mailto:limmt@lycosasia.com]
Sent: Monday, July 22, 2002 11:30 PM
To: GroupStudy@comcast.net
Cc: ccielab@groupstudy.com
Subject: RE: OSPF keeps bringing up DDR across asyn line
Hi,
Yes, its correct.
I've changed the area 10 where the dialer interface is in into a totally
stubby area and that solves the issues.
Thanks
Ivan Lim
-----Original Message-----
From: "Joe A" <GroupStudy@comcast.net>
Sent: Tuesday, July 23, 2002 10:50 AM
To: "'Ivan'" <limmt@lycosasia.com>, "ccielab@groupstudy.com"
<ccielab@groupstudy.com>
Subject: RE: OSPF keeps bringing up DDR across asyn line
It might be because you are redistributing a distance vector protocol into
OSPF, which generates an LSA over the link at each update period.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Ivan
Sent: Monday, July 22, 2002 8:16 AM
To: ccielab@groupstudy.com
Subject: OSPF keeps bringing up DDR across asyn line
Hi,
I've configured AUX back to back to simulate DDR across ISDN.
I've also configure it as a IP OSPF Demand Circuit.
However OSPF continues to bring up the link.
The link is under an OSPF area 10.
The debug dialer shows the reason for the link being bring up:
-------------------------------------------------------------
Mar 4 03:59:57.249 EST: As1 DDR: rotor dialout [priority]
Mar 4 03:59:57.253 EST: As1 DDR: Dialing cause ip (s=110.99.25.2,
d=224.0.0.5)
Mar 4 03:59:57.257 EST: As1 DDR: Attempting to dial 1234
Mar 4 03:59:57.257 EST: CHAT1: Attempting async line dialer script
Mar 4 03:59:57.261 EST: CHAT1: Dialing using Modem script: isdn & System
script
: none
Mar 4 03:59:57.269 EST: CHAT1: process started
Mar 4 03:59:57.269 EST: CHAT1: Asserting DTR
Mar 4 03:59:58.197 EST: CHAT1: Chat script isdn started
Mar 4 03:59:58.201 EST: CHAT1: Chat script isdn finished, status = Success
MU-R2#
----------------------------------------------------------------
Since the hello is suppressed over the point to point dialer link,
I'm not sure what OSPF is sending out on the all router multicast address
across the dialer interface. The other reason i can think of is when a
topology change that trigger the link but there is none.
Appreciate if anyone can advice on this.
Thanks
Ivan Lim
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