| 摘要 |
A network device has a power saving function, wherein the network device shifts to a power saving mode depending on a transition condition and returns from the power saving mode depending on a return condition. The network device includes a first notifying unit adapted to transmit notification information indicating that the network device shifts to the power saving mode by a multicast via the network and a second notifying unit adapted to transmit the notification information indicating that the network device shifts to the power saving mode by a unicast via the network.
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