Atm cell switch

Details Atm cell switch Atm cell switch

H - Electricity

04

L

H04L 12/56 (2006.01)

Patent

CA 2144904

An ATM cell switch comprises a plurality of data input/output link con- trollers connected to external data links, each link controller comprising a leaky bucket processor to monitor and control cell flow rates, the leaky bucket proces- sor comprising timer means for timing the arrival of each ATM cell, and calcu- lating means to calculate the time interval between the reception of two consecutive cells on the same connection, means for storing a predetermined regular bucket increment, means for determining from the calculated time inter- val and from the predetermined regular bucket increment the resultant level in the bucket, and means for comparing the resultant level in the bucket with a predetermined maximum level and, if the maximum level will be exceeded, for discarding, or changing the Cell Loss Priority of, the current cell, characterised in that the leaky bucket processor comprises means for performing the calcula- tion of the resultant bucket level for a pair of buckets simultaneously.

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