I don't understand ospf network statement with physical network topology

From: Wen Jia Yang (tonyblair@xxxxxxxxx)
Date: Wed Mar 06 2002 - 07:54:46 GMT-3

   
hi,all .

   A senario like this, 1----------fr cloud--------2
                         HUB \
                                        \
                                         \
                                          3

I use physical interfaces,1 is hub,2 and 3 are spokes
I just turned off the inverse-arp on all of them,then issue two fr map statemen
ts only on 1(towards 2 and 3) & only one fr map statement on 2 and 3 respective
ly(towards 1,of course),now I know that 1 can ping 2 and 3,and 2c3 can ping 1 b
ut 2 and 3 can't ping eath other.Then how will I configure ip ospf network stat
ement if I will run ospf on it????

Physical topology is NBMA,and the default ospf network is NBMA(if i am running
FR)
I just don't get the difference between the network type of ip ospf network sta
tement and the physical topology.

And does the fr map statement affect the physical topology????

Thank you so much.

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