From: Guyler, Rik (rguyler@shp-dayton.org)
Date: Mon Nov 05 2007 - 14:38:16 ART
That's how I would do it, set the priority to a non-zero value on the DR and
set it to zero on the DRothers. Otherwise as you've said the DR election
isn't preemptive.
I did stop for 2 seconds to consider the possibility of mixing network types
but the DR election is what determines compatibility between various unlike
network types so that wouldn't work in this case.
Rik
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Eric
Phillips
Sent: Monday, November 05, 2007 12:05 PM
To: ccielab@groupstudy.com
Subject: Any way to force OSPF DR other than "priority 0"?
Hey all,
I have done quite a bit of Googling and DOC-CD reading, and have not found
anyone offering any clever ways to force the election of a certain router as
the DR besides setting the priority to 0 on all other routers.
For example, if I had a question that asked me to ensure Router1 was always
the DR on a certain segment without touching the configuration of Router2
and Router3 I can set the priority very high on Router1, but if Router1
boots a few seconds later than Router2, Router2 will be the DR even if it
has it's default priority of 1. The only way I can think to completely
guarantee Router1 is always the DR is to make the priority 0 on all other
routers.
Am I missing something obvious, or am I over thinking this too much? I have
not seen this asked in any practice labs, just theorizing what could happen.
-Eric
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