broadcasts over serial type interfaces

Unanswered Question
Jan 12th, 2009

hi all, with serial intefaces and frame relay etc, can they forward broadcast and multicast traffic?

I have this problem too.
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Giuseppe Larosa Tue, 01/13/2009 - 02:27

Hello Carl,

on this kind of media to send a multicast or a broadcast requires:

mapping with broadcast option in frame-rel map ip command

and the packet needs to be replicated over each PVC to every neighbor (in a point to multipoint configuration)

on a simple point-to-point serial links with HDLC and PPP the packet is sent out as a unicast packet

Hope to hlep


carl_townshend Tue, 01/13/2009 - 07:37


how would you get eigrp and ospf to work with frame relay etc ? would you need to configure a static mapping for the end routers?

also on the point to point links, how is it sent as a unicast? would the unicast address be the data link layer address of the other sides link ?


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