From: Wu, Jiang (wujiang@xxxxxxxxx)
Date: Wed Dec 06 2000 - 08:24:58 GMT-3
You SHOULD filter the ISDN route out of redistribution into OSPF. Post your "de
b ip o lsa".
----- Original Message -----
From: Justin Menga <Justin.Menga@computerland.co.nz>
To: <ccielab@groupstudy.com>
Sent: Wednesday, December 06, 2000 6:15 PM
Subject: OSPF Demand Circuit
> 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
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:25:59 GMT-3