Router and method of supplying power to memory unit in the same

A router, comprising:

• a routing table memory unit configured to store a routing table and be capable of reading and writing the routing table at any time, the routing table being destination information of a packet;
• a search engine unit which has a transfer information base memory unit and which is configured to search for a destination of the packet based on a transfer information base, the transfer information base memory unit storing the transfer information base and being capable of reading and writing the transfer information base at any time, the transfer information base being created based on the routing table and being information of a correspondence relationship between a transferable destination of the packet and an appropriate destination for delivering the packet in a shortest path, at least one of the routing table memory unit and the transfer information base memory unit being a non-volatile memory;
• a power supply unit configured to supply power to the routing table memory unit and the transfer information base memory unit;
• and
• a control unit configured to control the power supply unit such that the power is supplied to the non-volatile memory when the non-volatile memory is operated, and the power supply is interrupted when the non-volatile memory is not operated.