Research Of The Protection And Recovery Technology In City Area ASON

Each optical channel in ASON carries vast of information, the protection and recovery technology is very important to ASON. The protection and recovery technology of ASON is researched in this dissertation. Several protection algorithms based in SRLG is researched in this dissertation. The DLWC-SSPP algorithm which combined the advantage of DLWC algorithm and the SSPP protection method is brought forward in this dissertation. The OPNET is used to build the simulation platform for rout algorithm. The DLWC-SSPP and DLWC-SPP algorithm are simulated in two difference topology using this plane. The difference block performance between the DLWC-SSPP and DLWC-SPP algorithm is compared. The relationship between the block performance and the topology and the amount of resource is researched. The result shows that the DLWC-SSPP algorithm is excellent in switching time when the net is in a failure, balance in communication load and avoid self fall etc. Topology is the most outstanding factor which affects the block rate.