Abstract: A monitoring apparatus (200) according to the present invention sets an RPL (Ring Protection Link) to each network apparatus constituting a communication network by ERP (Ethernet Ring Protection). The monitoring apparatus (200) includes an RPL deciding unit (201) for deciding an RPL based on a change in a bandwidth of a communication path. Thus, it is possible to provide a monitoring apparatus that can effectively use changing bandwidths.

Abstract: A monitoring apparatus (200) according to the present invention sets an RPL (Ring Protection Link) to each network apparatus constituting a communication network by ERP (Ethernet Ring Protection). The monitoring apparatus (200) includes an RPL deciding unit (201) for deciding an RPL based on a change in a bandwidth of a communication path. Thus, it is possible to provide a monitoring apparatus that can effectively use changing bandwidths.

Abstract: The transmission capacities of physical links that constitute link aggregation can be effectively used even when the transmission capacity of any of the physical links varies. A transmission device 100 includes a plurality of virtual ports 120 and a virtual port controller 140. Each of the plurality of virtual ports 120 is assigned to any one of a plurality of wireless ports 110 whose transmission capacity is variable, and provides data transmission with a predetermined transmission capacity using the wireless ports 110 to which the virtual port 120 is assigned. The virtual port controller 140 determines, for each of the plurality of wireless ports 110, a number of virtual ports 120 to be used for data transmission among the virtual ports 120 assigned to the wireless port 110, in accordance with the transmission capacity of the wireless port 110.