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VPLS/IPLS Full Mesh Failures Assumption that full mesh of PWs is present. If assumption fails, black holes can occur. Failure modes: Data plane failures that misdirect or drop packets Loss of proper PW state at edges Auto-discovery/configuration failures But remember: PWs not real wires Implemented via any-any network Increase in error coverage is small: Failures not caused by backhoes, router outages, but by bugs and errors. |