Transmission system with recording of untransmitted packets

Details Transmission system with recording of untransmitted packets Transmission system with recording of untransmitted packets

1992-10-14

1994-05-17

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 17, 370 60, H04J 314

Patent

active

053134559

ABSTRACT:
Packets transmitted in an automatic packet transmission system each have an information part and a header part. The heater contains virtual channel information (vci), identifying the virtual transmission channel and/or the group of virtual transmission channels via which the packet is being transmitted. The transmitted system at a junction point comprises 94 access control system including a counter-and-threshold access control device (3) controlling a switch (2) for granting or refusing packets access to the downstream part of the transmission system, depending on the arrival rate of incoming of packets of the respective packet types identified by their virtual channel information. An error reporting device (4) records per vci the arrival rate of packets which are refused access downstream when a first threshold arrival rate is exceeded. Arrival rates and arrival rate thresholds are measured by a "leaky bucket" method for each packet type. When the arrival rate of packets which are refused downstream access exceeds a second threshold value the error reporting device prevents excessive processing of access refusals in overloaded virtual channels and sends an error message for attracting the attention of supervisors or users of the transmission system.

REFERENCES:
patent: 4993024 (1991-02-01), Quinguis et al.
patent: 5007043 (1991-04-01), Van Den Dool et al.
patent: 5014260 (1991-05-01), Wicklund
patent: 5117417 (1992-05-01), Danner
patent: 5119364 (1992-06-01), Thiebaut et al.
patent: 5128924 (1992-07-01), LeBihan

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