Method for routing packets by squelched flooding

Details Method for routing packets by squelched flooding Method for routing packets by squelched flooding

1989-04-11

1991-04-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 943, H04J 326

Patent

active

050070525

ABSTRACT:
A technique is provided whereby broadcast or flooding packets received at a node are only rebroadcast if specific criteria are met. The criteria are based on a packet routing protocol wherein sequence information is maintained at each node on a link basis for each received packet and wherein received packets are rebroadcast only to other nodes with low sequence numbers. Each node maintains information on each other node within its communication range and assigns a link sequence number to the linked node at the time of the first exchange of a link information packet. Each node works backwards from the information sent to it to determine which other nodes should receive rebroadcast packets. In a packet flooding situation, a node rebroadcasts a flooding packet only to those other nodes which have low sequence numbers or for which the rebroadcasting node is a low sequence number of the other node.

REFERENCES:
patent: 4760572 (1988-07-01), Tomikawa
patent: 4864559 (1989-09-01), Perlman
patent: 4920529 (1990-04-01), Sasaki et al.

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