Multi-area MPLS/GMPLS Interoperability Trial Over 14-Vendor Packet/TDM/ROADM/OXC Network

A multi-area MPLS/GMPLS interoperability trial was successfully conducted using various types of network elements from 14 vendors for the first time. The results show that the interior gateway routing protocol based multi-area routing architecture is a promising solution to achieve nationwide deployment of GMPLS networks within a carrier domain.