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目录1、6509、7609端口检测方法............................................................................................22、65/79交换机boot启动相关参数释疑：.....................................................................33、MED值传递....................................................................................................................54、HSPRtrack问题..............................................................................................................55、背板带宽、端口带宽相关参数理解.............................................................................66、IGP、BGP路由组播方式区别........................................................................................97、45系列硬件匹配问题..................................................................................................108、NAT一例疑难问题解决案例（BUG？）....................................................................109、45系列线卡不支持，解决案例（升级IOS解决）...................................................1110.MTU值不匹配导致OSPF邻接状态异常及相关解决方法.........................................141、6509、7609端口检测方法#shdiagnosticresultmodule2Currentbootupdiagnosticlevel:minimalModule2:CEF72024port1000mbSFPSerialNo:SAL1302FTUNOverallDiagnosticResultforModule2:PASSDiagnosticlevelatcardbootup:minimalTestresults:(.=Pass,F=Fail,U=Untested)1)TestTransceiverIntegrity:Port123456789101112131415161718192021222324----------------------------------------------------------------------------........................2)TestLoopback:Port123456789101112131415161718192021222324----------------------------------------------------------------------------........................3)TestTxPathMonitoring------------>.4)TestSynchedFabChannel----------->.5)TestL3VlanMet------------------->.6)TestIngressSpan----------------->.7)TestEgressSpan------------------>.8)TestAsicMemory------------------>U9)TestEobcStressPing-------------->U10)TestFirmwareDiagStatus---------->.11)TestAsicSync-------------------->.12)TestUnusedPortLo
