Determining the number of active nudes on an ethernet network by

Details Determining the number of active nudes on an ethernet network by Determining the number of active nudes on an ethernet network by

1996-10-11

1998-11-17

Barry, Lance Leonard

Multiplex communications

Channel assignment techniques

Carrier sense multiple access

370447, 370448, 39520055, H04B 714

Patent

active

058386882

ABSTRACT:
Delay times are modified in Ethernet network devices by adding an integer multiple of a delay interval to the minimum interpacket gap (IPG) interval, and decrementing a deferral counter storing the integer in each network station in response to detected activity on the media. Each station independently determines the number of stations active on the network media by counting the number of successful packet receptions following a corresponding detected collision. Once the number of detected collisions equals the number of stations (N) minus one, each station independently establishes a unique integer value from the range of zero to the number of detected collisions, i.e., up to the number of stations (N) minus one, by resetting the deferral counter to (N-1) after a successful transmission, and by decrementing the deferral counter upon detection of a successful transmission without collision by another station. The unique integer value ensures that each station has a different delay interval in accessing the media after sensing deassertion of the receive carrier. Each network station also includes a deferral timer that counts the maximum delay interval of (N-1) delay intervals plus the minimum IPG value, and thus establishes a bounded access latency for a half-duplex shared network.

REFERENCES:
patent: 5430732 (1995-07-01), Lee et al.
patent: 5436903 (1995-07-01), Yang et al.
patent: 5526355 (1996-06-01), Yang et al.
patent: 5642360 (1997-06-01), Trainin
patent: 5650997 (1997-07-01), Yang et al.
patent: 5699515 (1997-12-01), Berkema et al.
AMD, AM79C791 PCnet.TM.-Fast, Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller to PCI Local Bus, Preliminary Data Sheet Publication #20550, Rev. B, May 1996.
Breyer et al., "Switched and Fast Ethernet: How It Works and How to Use It", Ziff-Davis Press, Emeryville, CA (1995), pp. 60-70.
Johnson, "Fast Ethernet: Dawn of a New Network", Prentice-Hall, Inc. (1996) , pp. 158-175.

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