ospf misunderstanding

From: Popgeorgiev Nikolay (nikolay.popgeorgiev@siemens.com)
Date: Wed Feb 01 2006 - 12:50:17 GMT-3


Dear all,
 
I have a small question about ospf, network types and frame-relay.
 
Here is a sample network:
 
two spokes, one hub. The requirement is to enable ospf between them and to use non-broadcast network type on the interfaces.
 
This leads to a DR/BDR election, and according to me the DR should be on the hub and there shouldn't be BDR.
Also I have to put "ip ospf priority 0" on my spoke routers' interfaces right?
Cause the network doesn't allow multicasts I have to specify neighbors - two from the DR and one on each spoke.
 BUT in a solution from a work book I saw this sentence :
 
"The neighbor statements are required only on interfaces that are NOT configured with ip ospf priority 0 (which means spokes don't need neighbor command)"
 
SO how does the spokes find where to make their adjacency ?
 
 
thanks,
Nick



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