Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1996-02-13
1999-01-05
Pham, Chi H.
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370401, 370475, H04L 1266
Patent
active
058569740
ABSTRACT:
The present invention is an address mapping gateway, used in an internetwork link, that associates all nodes in a domain with a single network number (referred to as a domain network address), and provides gateway-mapped node addresses that are unique within the domain. The address mapping gateway dynamically substitutes the "globally-unique" domain network address and the "domain-unique" gateway-mapped node address for a network number and node address, respectively, of a network layer address of a packet header received from a source node in the domain. Conversely, when a packet is received for a destination node in the domain, the address mapping gateway substitutes the originally-assigned network number and node address for the domain network address and gateway-mapped node address, respectively, prior to forwarding the packet to the node. Specifically, the address mapping gateway maintains an address mapping table that provides a cross-reference between (1) a source node address and the network number of the local network in which the node resides, and (2) a gateway-mapped node address generated by the address mapping gateway. Upon receipt of a packet from the source node, the address mapping gateway creates a mapping entry in the address mapping table that node and performs an address translation to a globally-unique network layer address. On the other hand, upon receipt of a packet destined for a destination node in the domain, the address mapping gateway locates the mapping entry for the packet's gateway-mapped node address and performs a reverse address translation to the originally-assigned network layer address.
REFERENCES:
patent: 4933937 (1990-06-01), Konishi
patent: 4933938 (1990-06-01), Sheehy
patent: 5150464 (1992-09-01), Sidhu et al.
patent: 5159592 (1992-10-01), Perkins
patent: 5163045 (1992-11-01), Caram et al.
patent: 5249181 (1993-09-01), Wang et al.
patent: 5313465 (1994-05-01), Perlman et al.
patent: 5390173 (1995-02-01), Spinney et al.
patent: 5428615 (1995-06-01), Backes et al.
patent: 5442633 (1995-08-01), Perkins et al.
patent: 5636216 (1997-06-01), Fox et al.
Apple Computer, "Appletalk Update-Based Routing Protocol: Enhanced Appletalk Routing", Aug. 1993, pp. 1-50.
Allen Michael D.
Gervais Joseph L.
Natarajan Alampoondi E.
Perlman Radia J.
Novell Inc.
Pham Chi H.
Yao Kwang B.
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