Abstract:
Embodiments of the present invention disclose a path selecting method and apparatus. The method includes: computing an end-to-end path for a newly added service according to network topology and a wavelength constraint, and assigning a wavelength to the path; computing performance of each existing service and performance of the newly added service in a network according to physical impairment information collected in the network, where the physical impairment information includes a gain reference spectrum of each optical amplifier in the network; and performing impairment check on performance of each service, and performing path selection for the newly added service according to a result of the impairment check. The apparatus includes a path computation module, a performance computation module and an impairment check module. According to the embodiments, efficiency of network update or rerouting is improved.
Abstract:
Embodiments of the present disclosure provide a method and an apparatus for achieving energy saving of a data switching device. The apparatus acquires a working model, where the working model includes correspondence between a working mode and time within a working cycle of the data switching device, the working mode can identify a bandwidth capacity in the working mode, and controls a data processing module in the data switching device to work according to the working model, so that the data processing module works under a bandwidth capacity identified by a corresponding working mode at the time. In the technical solutions of the embodiments of the present disclosure, the power consumption of the data processing module in the data switching device can be reduced in the idle time period, thereby effectively achieving energy saving.