Japanese magazine “OPTCOM” (issued in August) picked up about “a self organized energy efficient network MiDORi” as a special report in the energy efficient network.

Yamanaka Lab. focuses on a self-organizing energy saving network which realizes the most energy-efficient network topology automatically based on traffic volume monitored at network devices, Generalized Multiprotocol Label Switching (GMPLS) automatic path control protocols, and Path Computation Element (PCE) energy optimal path computation system.
When traffic volume is low, MiDORi network system makes as many links as possible idle by aggregating traffic. The idle links are power shut down for energy saving.
The experimental network consists of commercially produced Ethernet switches (Alaxala AX6700S), green Ethernet switches developed by Keio Univ. which is now selling by AllGreen Networks Inc., and an energy saving network topology calculation system.
By adopting this self-organizing energy saving network system, about 61 percent link reduction is expected in the 100 nodes topology network.

This work is supported by PREDICT program of the Ministry of Internal Affairs and Communications (MIC) of Japan.