NETWORK RELAY DEVICE, QoS CONTROL METHOD, AND RECORDING MEDIUM ON WHICH QoS CONTROL PROGRAM IS RECORDED

摘要

[Problem];The problem is to carry out the QoS control which tracks a change in a state of an outward line.;[Means for solving the problem];A network repeater according to the present invention includes: a flow control means to carry out flow control for restricting inflow of a data flow which is received through an inward line; a bandwidth control means to carry out bandwidth control of controlling a bandwidth of a data flow which is received through the inward line and is sent through an Outward line; and an outward line monitoring means to monitor a change in a state of the outward line. In the case that the monitored state of the outward line satisfies a specified condition which is determined in advance, either the flow control or the bandwidth control is carried out on a condition corresponding to the specified condition.