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Frame Switching Node Architecture Disclosure Number: IPCOM000038481D
Original Publication Date: 1987-Jan-01
Included in the Prior Art Database: 2005-Jan-31

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Blanc, A Jeanniot, P [+details]


This architecture is used in a high performance network composed of traditionnal network access nodes connected through one or several frame switching nodes (FSNs) which realize the network transit function. The main characteristics of the FSN are: . Multiplexing of HDLC (high level data link control) frames of variable length. . Routing of the incoming HDLC frame to the selected output line according to the routing tag information included in the transmission header of each frame. No error recovery. Frame drop in case of overflow. The main characteristics of this architecture are described hereunder. Frames are memorized and transferred including opening flag, closing flag and inserted zeros. Internal dataflow is controlled by flag detection.