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Abstract

An atomic type switch mesh is combined with standard local area network links, such as high speed Ethernet, and a bridge-like protocol to provide a high performance scalable network switch. The network switch comprises a plurality of switch nodes, a first set of communication links which are coupled between switch nodes internal to the network switch, and a second set of communication links which comprise network links from switch nodes on the border of the network switch to systems external to the network switch. The respective switch nodes include a set of ports (having more than two members) which are connected to respective communication links in either the first or second set of communication links. Each port in the set comprises a medium access control (MAC) logic unit for a connectionless network protocol, preferably high speed Ethernet. The switch nodes also include a route table memory which has a set of accessible memory locations that store switch route data specifying routes through the plurality of switch nodes within the boundaries of the network switch. Flow detect logic is coupled with the set of ports on the switch node, which monitors frames received by the set of ports and generates an identifying tag for use in accessing the route table memory. Finally, the switch node includes node route logic which is coupled with the flow detect logic, the route table memory and the set of ports. The node route logic monitors frames received by the set of ports to route a received frame for transmission out a port in the set of ports.

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First Claim