在GMPLS控制光网络中波长转换信息分享

Wavelength Converter Information Sharing in GMPLS Controlled Optical Networks

Wavelength converters are used in optical networks to overcome transparent wavelength channel insufficiency. However, current GMPLS control plane does not distribute wavelength converter information to network nodes. To overcome this situation, four wavelength converter information sharing methods for GMPLS-controlled optical networks are proposed. The first two, Conversion Capability during Signaling (CCS) and Conversion Availability during Signaling (CAS), are based on the RSVP-TE signaling protocol, while the others, Conversion Capability Advertisement (CCA) and Conversion Availability Advertisement (CAA), are based on the OSPF-TE routing protocol. Simulations show that CAA obtains the lowest blocking, while CCS the highest. Moreover, CAA only slightly increases the control plane load compared to CAS.