Improved internet protocol packet router

Details Improved internet protocol packet router Improved internet protocol packet router

H - Electricity

04

L

H04L 12/56 (2006.01)

Patent

CA 2347998

Apparatus and a method for routing packets having destination addresses in their header. The routing modules of the router are of two types: simple routing modules which can only route packets whose destination address is stored in a limited memory of the module for storing corresponding output port addresses, and default modules which are used to find the identity of an output port for routing all other packets received by the simple routing modules of the router. Advantageously, the processing load of the simple routing modules is smoothed because these modules do not have to perform the complex searching functions required to find destination addresses not readily accessible in their memory. Advantageously, the single or small number of default routing modules can have sophisticated memory and processor facilities for searching over a very large number of destination addresses and for concentrating the process of sending queries to other routers for additional information.

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