Hub apparatus

Details Hub apparatus Hub apparatus

2007-01-24

2009-08-25

Lee, Andrew (Department: 2416)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S235100

Reexamination Certificate

active

07580352

ABSTRACT:
A hub apparatus is disclosed that includes plural input ports; a policer unit that monitors the input bandwidth of the input ports and controls acquisition and discarding of input packet data input via the input ports, the policer unit including plural policers assigned to the input ports that have input token buckets for accumulating input tokens; a packet multiplexer that multiplexes the input packet data acquired by the policer unit; a shaper that transmits the multiplexed packet data at equal intervals according to an output bandwidth, the shaper including an output token bucket that accumulates output tokens up to a predetermined amount; and a surplus token recycling unit that recycles surplus tokens exceeding the predetermined amount that are generated at the output token bucket of the shaper by distributing the surplus tokens to the input token buckets of the policers of the policer unit.

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