Method and apparatus for interfacing to a local area network

Details Method and apparatus for interfacing to a local area network Method and apparatus for interfacing to a local area network

1987-05-01

1989-02-28

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

H04J 302

Patent

active

048092657

ABSTRACT:
A controller for a bridge interconnecting local area networks operates in two modes. In a first mode the controller receives and transmits station data frames with previously appended frame check sums. In a second mode the controller responds to requests for information from stations by generating data frames from an associated memory. The controller computes and appends frame check sums and then transmits the frames and check sums to the requesting station. The controller is constructed and is effective to operate in a way which insures that all station data frames transmitted from stations to the bridge are received by the bridge without interruption or loss during all periods of operation. The controller receives all such frames at all times, including the time intervals during which circuitry in the controller must be off line and reprogrammed for changing operation between the first and second modes.

REFERENCES:
patent: 4568930 (1986-02-01), Livingston et al.
patent: 4635254 (1987-01-01), Tulpule et al.
patent: 4700185 (1987-10-01), Balph et al.

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