| 摘要 |
An apparatus comprising 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, wherein the candidate protection segments comprise a protection segment that is configured to protect the working segment, wherein the candidate protection segments other than the protection segment do not protect the working segment, wherein only one first state variable is used to maintain each of the candidate protection segments other than the protection segment, and wherein a plurality of second state variables are used to maintain each of the working segment and the protection segment.
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