Adaptive transparent photonic network control techmiques based on photonic-GMPLS-router network

This paper describes multillayer traffic englneenngand very cost-effective adaptlVe transparent photonic network control teclmiques based on new signaling teclmologleS in the photonic-GMPLS (generalized multi-prot∝Ol label switcll)-rOuter netWOrk・ To realize multilayer traffic englneerlng, We Propose an ospF extension that advertises boththe number of total wavelengths and也e number of unreseIVed waveleng血S・ According to the OSPF advertisement;the ingress edge node canselect best link to establish a transparent optical cut-tllrOughpath,anoptical direct pathwithout any wavelengthConversion・ ln addition,the paper describes the RSVP-TE extension, which uses the least totalnumber of wavelengthconversions. Compared tothe electrical MPLS network, this approach yields cost reductions of the order of80 %.