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ZXR102900ESeriesCongurationGuide

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port-1900d0d0092918110BSZXR102918E-PSport-9Unknown

VersionV2.05..

zte(cfg)#showlldpentry

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LocalPort:port-19

ChassisID:00d0d0092918(MACAddress)

PortID:port-9(InterfaceName)

TTLID:100(Timetolive)

PortDescription:port-9statusisup,media-typeis100BaseT,pvidis1.

SystemName:zte

SystemDescription:ZXR102918E-PSVersionV2.05.10.B10

SystemCapability:BridgeSwitch

4.36SinglePortLoopDetectionConguration

SinglePortLoopDetectionOverview

Singleportloopdetectionistocheckwhetheraloopexistsintheportsoftheswitch.Ifsuch

aloopexists,itmayresultinerrorsinlearningMACaddressesandmayeasilycausea

broadcaststorm.Inseverecase,switchandnetworkmaybedown.Startingthesingleport

loopdetectionanddisablingtheportwithloopcanefcientlyavoidtheinuencecaused

byportloop.

Theswitchsendsatestpacketthroughaport.Ifthistestpacketisreceivedthroughthe

portwithoutanychange(oronlyatagisattached),itindicatesthataloopexistsinthis

port.

Thetestpacketsentbytheswitchincludesthefollowingthreeparameters:

lSourceMACaddress:ItindicatestheMACaddressoftheswitch.TheMACaddress

ofeachswitchisunique.

lPortNumber:Portnumberscorrespondtothenumbersoftheportsontheswitchone

byone.

lDiscriminationField:Foreachswitch,thedigitalsignatureofeachportisdifferent.

Whenthreeparametersinthereceivingandsendingtestpacketsaresame,theloop

denitelyexistsonthisport.

ConguringSinglePortLoopDetection

Thecongurationofsingleportloopdetectionincludesthefollowingcontents:

CommandFunction

zte(cfg)#setloopdetectsendpktinterval<5-60>

Setstheintervalforsendingloop

detectionpacket.

4-128

SJ-20120409144109-002|2012-07-02(R1.0)ZTEProprietaryandCondential

Zte ZXR10 2918E-PS User Manual

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