Nope. This is by design, so as to eliminate unnecessary routing protocol
traffic.
Practically speaking, what matters more than anything else is the order in
which the routers come on line. If you have two routers and boot them at the
same time, all this election stuff happens. If you boot one, then wait until
it is up, then boot another, the first one on line becomes the DR, or at
least this is the common operation in the Cisco world. A number of sours
mention this.
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Fowler, Joey
Sent: Saturday, January 06, 2001 5:52 PM
To: '[EMAIL PROTECTED]'
Subject: OSPF/ DR & BDR election
I setup OSPF on between two routers, and Router A was elected as the DR
becuase it had the highest IP address. Router B was elected BDR. I ran debug
ip ospf adj on Router B and unplugged the Ethernet connection between the
two. After 40 seconds Router B showed that it promoted itself to DR. Then I
plugged the connection back in, and Router A was now selected as the BDR.
This didn't make sense to me. I know that each time a router is added, that
a new DRand BDR election does NOT take place, however shouldn't Router A
still considered itself as the DR so when the connection was re-established
it would either 1. remain as the DR or more likely 2. rerun the election
since both routers think that they are the DR. I might could understand if
there were multiple routers on the Ethernet connection. Any elightenment
would be greatly appreciated. Meanwhile I'll go look at RFC 2328.
Joey
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