Before revision: There are two types of path protection in Optical Mesh Networks: Dedicated Backup Path Protection and Shared Backup Path Protection Dedicated Backup Path Protection or DBPP (1+1) Dedicated backup path protection In DBPP, both the primary and backup path carry the traffic end to end, then it is up to the receiver to decide which of the two incoming traffic it is going to pick; this is exactly the same concept as in Ring Based Path Protection.
After revision: There are two types of path protection in Optical Mesh Networks: Dedicated Backup Path Protection and Shared Backup Path Protection Dedicated Backup Path Protection or DBPP (1+1) In DBPP, both the primary and backup path carry the traffic end to end, then it is up to the receiver to decide which of the two incoming traffic it is going to pick; this is exactly the same concept as in Ring Based Path Protection.