文档介绍：RingProtectionOverview March,2008 ITU-TQ9–SG15本资料由-大学生创业|创业|创业网料在线代理|网页代理|代理网页|排行榜|淘宝最好的减肥药|什么减肥药效果最好|减肥瘦身药|--大学生创业|创业|创业网料在线代理|网页代理|代理网页|排行榜|淘宝最好的减肥药|什么减肥药效果最好|减肥瘦身药|2ITU-TSG15/,-,Principles,-大学生创业|创业|创业网料在线代理|网页代理|代理网页|排行榜|淘宝最好的减肥药|什么减肥药效果最好|减肥瘦身药|(andamendedQbridges),,forwarding,flushbehaviourandportblocking/(eitherapre-determinedlinkorafailedlink).MonitoringoftheETHlayerfordiscoveryandidentificationofSignalFailure(SF)(RPL)–LinkdesignatedbymechanismthatisblockedduringIdlestatetopreventlooponBridgedringRPLOwner–NodeconnectedtoRPLthatblockstrafficonRPLduringIdlestateandunblocksduringProtectedstateLinkMonitoring–OAMmessages(CFM)SignalFail(SF)–HtrailsignalfailconditionisdetectedNoRequest(NR)–NoRequestisdeclaredwhentherearenooutstandingconditions(.,SF,etc.)onthenodeRingAPS(R-APS)Messages–(APS)Channel-Ring-wideVLANusedexclusivelyfortransmissionofOAMmessagesincludingR-