NBMA ....IGP DOUBTS

HI experts

1 )since NBMA does not support multicast ..then how are we able to form
adjacency on it ..for example rip and eigrp ..just turn the interface on and
neighbors will come up .....without any need to configure neighbor commands
... is it that protocol has inbult features that sense underlying frame
relay media and begins unicasting the neighbors as RIP and eigrp dont
require " classical neighbor commands" as required by OSPF ...

2) on a frame network if we specify OSPF network type as " broadcast" does
this turns the frame network that natively dosent support broadcast ...to
suddenly start supporting broadcast ....

3) whats the funda with " broadcast " key word in frame relay static maps
... whats differce will it create if i dint specify it ...

my routing protocols will not work if i dint specify it ?

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Received on Sat Jul 16 2011 - 20:02:37 ART