| 摘要 |
PROBLEM TO BE SOLVED: To reduce deterioration in communication quality in a system that performs multicast distribution.SOLUTION: In a network including a first relay apparatus on an upstream, a second relay apparatus on a downstream, and a plurality of terminal devices, a communication apparatus controls whether the first relay apparatus or the second relay apparatus performs a copy processing for copying data addressed to a multicast address required by the plurality of terminal devices for addressing a partial terminal device of the plurality of terminal devices to relay the data, based on a communication state in the network. |
