Connected: An Internet Encyclopedia
6.2. Multi-subnet broadcasts
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6. Gateways and Broadcasts
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6.2. Multi-subnet broadcasts
6.2. Multi-subnet broadcasts
When a gateway receives a broadcast meant for all subnets of an IP
network, it must use the Reverse Path Forwarding algorithm to
decide what to do. The method is simple: the gateway should
forward copies of the datagram along all connected links, if and
only if the datagram arrived on the link which is part of the best
route between the gateway and the source of the datagram.
Otherwise, the datagram should be discarded.
This algorithm may be improved if some or all of the gateways
exchange among themselves additional information; this can be done
transparently from the point of view of other hosts and even other
gateways. See [4, 3] for details.
Next: 6.3. Pseudo-Algol Routing Algorithm
Connected: An Internet Encyclopedia
6.2. Multi-subnet broadcasts