RE: OSPF Ethernet Segment DR Election

From: Frank B (frank@xxxxxxxxxxxx)
Date: Sat Dec 01 2001 - 19:45:19 GMT-3


   
If all routers have the same priority, in your scenario default which is
1, the DR election comes to router-id. If you have 12.0(1)T and above
you can use the router configuration command:

router-id

This command should be used to set the router-id to something higher
than all other router-id's and that router SHOULD become the DR. If the
DR has already been chose and not the one you want, not you can force an
election by clearing the OSPF process vice rebooting the router. But,
rebooting the router will do the same thing but takes longer. Or simply
shut down the Ethernet interfaces for a few seconds and bring 'em back
up. Do a debug ip ospf adjacencies to observe the entire process. This
helps you understand what is happening--whether it's what you desired or
not ;-)

Sorry I don't have time right now to confirm this but let me know how it
comes out if have the time. Aloha,

Frank

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
K. L.
Sent: Saturday, December 01, 2001 10:20 AM
To: ccielab@groupstudy.com
Subject: RE:OSPF Ethernet Segment DR Election

Hello Group,

I got scenario that one part requires for an OSPF configured Ethernet
segment of three routers.

My problem is that the default priority is not to be changed on each
routers ethernet interface. Also, that if a specific router is to be
the
DR (r2) even if the the loopback address of any of the other routers is
higher,

In brief I have a broadcast segment with 3 routers.
One is to be the DR with default priority as is on each router.
Also, not necessarily manually configuring a selected router with the
highest loopback ip address.
Still that router (ie. r2) is to be the designated router.

What did I miss?

Can this be done?

Thanks

ken



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