IP ROUTER, QUALITY OF SERVICE CONTROL METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To construct an IP network of high quality by efficiently suppressing variation in the delay characteristic of priority class traffic in the case of supporting a plurality of QoS classes in which low delay type priority classes such as VoIP and non-priority classes such as video distribution service are mixed.

SOLUTION: In an IP router having a QoS class control function, WFQ means 2a-2c for controlling the WFQ type reading of traffic in a non-priority class are formed in each of logical Internet units 5a-5c, a WRR means 3 for controlling the WRR type reading of output traffic from respective WFQ means 2a-2c is formed in each physical interface unit, a common queue 7 common to respective logical interface parts is formed as a queue for storing priority class traffic, and an SP means 4 for controlling SP type reading for reading out the output traffic from the common queue 7 and the output traffic of the non-priority class from the WRR means 3 in each priority is formed in each physical interface unit.

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