From: adrian777@comcast.net
Date: Thu Apr 20 2006 - 16:10:31 GMT-3
The short answer would be - they are not supposed to peer even if you have multipoint interfaces.
The purpose of choosing a DR and BDR on a multi-access network is to minimize the number of LSA sent by each router in the area and also the DR to represent the multi-access network to the rest of the internetwork.
When a DR is elected all the other routers in that multi-access segment are going to peer just with the DR and therefore will exchange LSA just with the DR minimizing the flood.
Adrian Mornaila, CCIE #16030
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