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New Member

NBMA and Hello Message

Hi,

In NBMA (non-broadcast multiple access), this communications protocol have no ability for send broadcast or multicast. How it is establish connection with neighbor because (Hello Message) send as multicast.

BR,

Auos.

3 REPLIES
Hall of Fame Super Silver

Re: NBMA and Hello Message

Hello Auos,

for example for FR by using frame-relay map command with the broadcast option.

FR or ATM NBMA needs to create a copy of each broadcast/multicast packet for each active PVC DLCI.

OSPF has also network types that don't use at all multicast hellos but in this case neighbor commands are needed in the OSPF process.

Hope to help

Giuseppe

New Member

Re: NBMA and Hello Message

Did you mean Hello Message send it as unicast.

Hall of Fame Super Silver

Re: NBMA and Hello Message

Hello Auos,

yes, I mean OSPF hellos sent as unicast to specified neighbor ip address under router ospf process.

Hope to help

Giuseppe

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