In recent years,with the increase and the development of optical network at a very high speed.It needs network performance such as network bandwidth, extensibility and adaptability can adapt to new business.At present,IP over WDM is one of the most important focus in networking field,which is envisioned as the promising candidate infrastructural technology for next generation Internet.Optical Burst Switching(OBS) is considered as one of the most promising "IP over WDM" technologies in the next generation all-optical network.In Optical Burst Switching,the granularity of bandwidth is between a bandwidth of wavelength and a bandwidth that meets the need of a grouping transmitting,which is more efficient than of Optical Circuitry Switching and more practical than Grouping Optical Switching.Therefore,the issues refer to the integration and cooperation between OBS and GMPLS should to be resolved if OBS want to be applied in next generation optical networks.GMPLS is developed from MPLS.GMPLS,in which time slots,wavelengths and optical fiber physical ports are used as labels for corresponding data transmit,is the inevitable result of MPLS extending to optical networks.
