Specifications

4.5 NetworkRedundancy

Itiscriticalforindustrialapplicationsthatnetworkremainsnon‐stop.PMISwitch

supportsstandardRSTP,MultipleSuperRing,RapidDualHomingandbackward

compatiblewithLegacySuperRingClientmodes.

MultipleSuperRing(MSR)technology,0msforrestoreandabout5milliseconds

forfailove r forcopper.

AdvancedRapidDualHoming(RDH)technologyalsofacilitatesPMISwitchto

connectwithacoremanagedswitcheasilyandconveniently.WithRDH

technology,youcanalsocoupleseveralRapidSuperRingsorRSTPcloudtogether,

whichisalsoknownasAutoRingCoupling.

TobecomebackwardscompatiblewiththeLegacySuperRingtechnology

implementedinPMIswitches,PMISwitchalsosupportsSuperRingClientmode.

TheSuperRingportscanpassthroughSuperRingcontrolpacketsextremelywell

andworkswithSuperRing.

Besidesringtechnology,allPMIManagedSwitchsupport802.1D‐2004version

RapidSpanningTreeProtocol(RSTP).NewversionofRSTPstandardincludes

802.1D‐1998STP,802.1wRSTP,IEEE802.1sMSTP(MultipleSpanningTree).The

MSTPfunctionisavailablefrom1.1versionfirmwear.

Following commandsareincludedinthisgroup:

4.5.1STPconfiguration

4.5.2STPPortconfiguration

4.5.3STPinformation

4.5.4MSTPconfiguration

4.5.5MSTPPortConfiguration

4.5.6MSTPinformation

4.5.7MultipleSuperRing

4.5.8MultipleSuperRingInfo

4.5.9CommandLinesforNetworkRedundancy

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