Multiplex communications – Wide area network – Packet switching
Patent
1984-06-04
1986-03-18
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
371 37, 370 89, H04J 300
Patent
active
045773130
ABSTRACT:
A method and apparatus for protecting the integrity of data in a multi-loop communication network is disclosed. A source station generates and forwards a frame with a unique format and a frame check sequence (FCS). At each bridge, an algorithm is provided to process the frame. If the frame is at a source bridge and not discarded, the FCS is preserved by encapsulating it in the Information field. The source bridge generates a new FCS, appends it to the frame and forwards the frame. Thereafter, each intermediate bridge generates its own FCS, appends it to the frame and forwards the frame. At the target bridge, no FCS is generated. The preserved FCS is forwarded as the FCS of the frame.
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patent: 3890471 (1975-06-01), Hachenburg
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"Extendability Considerations in the Design of the Distributed Computer System (DCS)," Proceedings, National Telecommunications Conference, Nov. 1973, by D. J. Farber and J. J. Vittal.
Olms Douglas W.
Rokoff Kenneth I.
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