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System for extending network resources to remote networks

  • US 5,423,002 A
  • Filed: 02/28/1994
  • Issued: 06/06/1995
  • Est. Priority Date: 04/20/1992
  • Status: Expired due to Term
First Claim
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1. An apparatus that connects a first network located in a particular site and a second network located in a remote site, so that resources on the first network appear to users of the second network as if such resources were located on the second network, comprising:

  • a first processor, having a first interface on the first network through which network frames of data are transmitted and received to and from the first network and an extended interface through which network frames of data are transmitted and received to and from the second network, the first processor providing network services to network frames of data received through the first and extended interfaces from users of the first and second networks and transmitting network frames of data through the first interface to users of the first network and through the extended interface to users of the second network;

    wherein the extended interface includes a point-to-point communication link from the particular site to the remote site, having a first link interface at the particular site coupled to the first processor and a remote link interface at the remote site, the network frames encapsulated and decapsulated according to a communication link format in the first link interface and the remote link interface, anda second processor, on the second network in the remote site and coupled to the extended interface, the second processor forwarding network frames of data from users of the second network addressed to the extended interface through the remote link interface to the first processor, and forwarding network frames of data received from the extended interface to the second network so that the first processor appears to users of the second network as if it was on the second network.

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