METHOD OF M:1 PROTECTION

摘要

An apparatus comprises a first segment endpoint bridge (SEB) configured to couple to a second SEB via a plurality of path segments, wherein the path segments comprise a working segment and a plurality of candidate protection segments. The candidate protection segments comprise a protection segment that is configured to protect the working segment. The candidate protection segments other than the protection segment do not protect the working segment. Only one first state variable is used to maintain each of the candidate protection segments other than the protection segment. A plurality of second state variables are used to maintain each of the working segment and the protection segment.