Packet transmission method, packet transmission apparatus, and storage medium

A transmission apparatus, comprising:

• a memory, and
• a processor coupled to the memory and configured to:
• receive a packet having a first service class;
• determine a maximum transfer band of the first service class, the maximum transfer band indicating an upper limit of a transfer band, based on maximum transfer band information for each of a plurality of service classes of each of a plurality of computers;
• determine a transfer band of the first service class based on traffic amount information for each of the plurality of service classes of each of the plurality of computers;
• transfer the received packet in the first service class, when the transfer band of the first service class is smaller than the maximum transfer band of the first service class;
• determine whether a second service class, different from the first service class, includes a free band based on the maximum transfer band information, when the transfer band of the first service class is not smaller than the maximum transfer band of the first service class;
• and
• transfer the received packet in the second service class, when it is determined that the second service class includes the free band.

A non-transitory computer readable storage medium storing a program causing a computer among a plurality of computers in a network to execute a process, the process comprising:

• receiving a packet having a first service class;
• determining a maximum transfer band of the first service class, based on maximum transfer band information for each of a plurality of service classes of each of the plurality of computers;
• determining a transfer band of the first service class, based on a traffic amount information for each of a plurality of service classes of each of the plurality of computers;
• transferring the received packet in the first service class, when the transfer band of the first service class is smaller than the maximum transfer band of the first service class;
• determining whether a second service class, different from the first service class, includes a free band, based on the stored information of maximum transfer band information, when the transfer band of the first service class is not smaller than the maximum transfer band of the first service class;
• and
• transferring the received packet in the second service class, when it is determined that the second service class includes a free band.