Multiplex communications – Wide area network – Packet switching
Patent
1988-09-08
1990-02-13
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 326
Patent
active
049013122
ABSTRACT:
A Local Area Network (LAN) is a digital communications network interconnecting serial local computer workstations. The invention provides a technique for interconnecting two or more remote LAN's. In a specific embodiment the LAN's are IBM Token Rings in which case the notion of a virtual or pseudo ring is conceived to represent the network between the remote Token Rings. Each Token Ring is connected to the network by a respective half-bridge. Each half-bridge enters a number representing the pseudo ring in the Routing Information field of the frames it forwards over the network to a remote half-bridge. The frames are preferably multiplexed by encapsulating them in a LAPD-compatible frame having a header containing an identifier which identifies the half-bridge for which the frame is destined.
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"Gateways and Bridges for Local Area Networks" by David A. Cates.
Hui Man H.
Lamont James A.
Patel Haroon
Shah Yogesh B.
Valiveti Radhakrishna S.
Marcelo Melvin
Olms Douglas W.
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