From: Simon Baxter (Simon.Baxter@xxxxxxxxxxxxxx)
Date: Wed Dec 06 2000 - 20:22:08 GMT-3
But aren't you saying the problem is in the IGRP-OSPF direction?
how would
router os 10
redist igrp 10 subn
distribute-list 100 in igrp 10
!
access 100 per ip any x.x.x.x m.m.m.m
Doesn't "Solution: filter IGRP to OSPF redist to ensure no OSPF routes are
coming
back from the IGRP area." imply you need to stop routes going back in
mutual redistribution?
Simon
-----Original Message-----
From: gferro@netstarnetworks.com [mailto:gferro@netstarnetworks.com]
Sent: Thursday, December 07, 2000 12:49 AM
To: Justin Menga
Cc: ccielab@groupstudy.com
Subject: Re: OSPF Demand Circuit
IGRP is putting routes into the OSPF process as Type 5 External LSA summary
routes. Every time IGRP updates, it updates the routes vs the OSPF internal
routes, OSPF database sequence number increments, ospf on demand comes up
to synchronise.
to see this debug ip os lsa (as other have said).
Solution: filter IGRP to OSPF redist to ensure no OSPF routes are coming
back from the IGRP area.
At 08:15 PM 6/12/2000, you wrote:
>Hi,
>
>I am having real trouble with these.......
>
>If I have a point-to-point link, and on one side I have dialer map
>statements and on the other side I do NOT have dialer map statements (i.e.
>dialer string xxxxxx), what I have found:
>
>1. If I leave the network type as POINT_TO_POINT I must include the
>broadcast keyword in the dialer map statement, otherwise an adjacency never
>forms - this is logical as point-to-point uses multicast.
>
>2. If I include the broadcast keyword in the dialer map statement and have
>the dialer interface configured as ip ospf demand-circuit, HELLO's are
still
>sent over the dialer interface - however NOT while the line is up, only
once
>it disconnects.
>
>3. Demand-circuit doesn't work if you use NON_BROADCAST or BROADCAST -
>Hellos continue to be sent - I thought this might get around using the
>broadcast in the dialer map (at least for NON_BROADCAST).
>
>This 'seems' to be a simple technology, but it won't work properly for me!!
>Any ideas as to why OSPF multicasts to BRI0 once the line goes down??
>
>I HAVE JUST DONE SOME MORE TESTING AND FOUND THAT THIS BEHAVIOUR ONLY
OCCURS
>IF YOU ARE REDISTRIBUTING INTO OSPF. ONCE THE LINE GOES DOWN, THE ROUTER
>REDISTRIBUTING BRINGS UP THE LINE. THE REASON FOR CALL IS AN OSPF
MULTICAST
>TO 224.0.0.5. IN THE SCENARIO (BOOTCAMP 17), ONE OF THE ROUTERS IS
>REDISTRIBUTING IGRP. THE OTHER END IS REDISTRIBUTING IS-IS AND DOES NOT
>BRING UP THE LINE WITH THIS REDISTRIBUTION.
>
>IS THIS NORMAL??
>
>Regards,
>
>Justin Menga MCSE+I CCNP CCSE ASE
>WAN Specialist
>Computerland New Zealand
>PO Box 3631, Auckland
>DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
>mailto: justin.menga@computerland.co.nz
>
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