Imaging system and imaging device

An imaging system including an imaging device connected to a first communication network, and a first server device connected to the first communication network, the imaging system comprising:

• a network interface unit configured to transfer data that is formed of video data and data other than the video data, the network interface unit including a first logical port that is used to transfer the video data and a second logical port that is used to transfer the data other than the video data;
• a measuring unit that measures a data transfer amount of the second logical port included in the network interface unit;
• and
• a band control unit that sets a transfer band of the first logical port in such a way that the data other than the video data is transferred on the second logical port, according to the data transfer amount measured by the measuring unit.