Interconnection of broadcast networks

Details Interconnection of broadcast networks Interconnection of broadcast networks

H - Electricity

04

Q

344/28

H04Q 3/42 (2006.01) H04L 12/46 (2006.01) H04L 12/56 (2006.01)

Patent

CA 1254984

Abstract of the Disclosure A process is disclosed for effecting transmission over a generally cyclic communication system comprising numerous networks interconnected by gateway pairs. Each gateway of each pair implements a store-and- forward protocol whereby each gateway forwards message packets propagated over its associated network except for any packets that are destined for a device which has previously appeared in the sending address of another packet. In order to utilize this protocol as a basis for transmission, the system is covered with a set of spanning trees that satisfy capacity and reliability requirements. Each spanning tree is assigned a unique identifier and each packet traversing the system is assigned to and conveys the specified spanning tree. Each gateway parses the packet to determine the assigned spanning tree and forwards the packet accordingly. To mitigate system flooding by a newly connected device, the protocol may also incorporate a delay to allow the gateways to learn the location of the new device.

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