Importance

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Abstract

Connected to different routers of a packet routing network through a public network and to local area networks (LAN's) and comprising a routing table keeping routing information for an optimum path between each pair of the LAN's, a local router comprises a protocol processor for periodically processing the routing information into a local routing information protocol (RIP) datum indicative of connection information to the LAN's connected to the local router and a comparator comparing the local RIP datum with stored information of an RIP memory to discard and to write in the memory as a current datum the local RIP datum if the local RIP datum is coincident and incoincident with the stored information, respectively. A public network interface sends the current datum towards the different routers. In the routing table, the routing information is dynamically updated in response to an incoming RIP datum received from any one of the different routers.

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First Claim