Loop avoidance for recovery paths in mesh networks

摘要: A protected communication network utilizes a link-based recovery strategy that incorporates loop-avoidance mechanisms to eliminate redundant traversal of links in paths, thereby improving efficiency. The can include calculation paths taking into account segments shared risk link groups. In one two-phase mechanism, full link-detour path is calculated for primary-path by generating minimum cost between the upstream and downstream terminating nodes link. Next, shortened removing are original primary path. Calculation link-detours elimination loops supported some embodiments distribution link-state parameters via extensions link-state-advertisement (LSA) protocol.