ccieck题库钻石终结版

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1、63,77,87,92,111,128,MSDP133,144,152,168，171,172,177,200,207,216，221,237,254,258—263,,267，269，286，303，331,366Police后面直接加数值和CIR加数值的区别MSDP和ANYCASTWRR和SRRWFQ和CBWFQ1、WhatisBGPsynchronization?A:Theruleofsynchronizationstatesthefollowing:BeforearoutelearnedfromanIBGPneighb

2、orisenteredintotheIProutingtableorisadvertisedtoaBGPpeer,theroutemustfirstbeknownviaIGP.2、whichBGPattributeswillinfluenceinboundflow?A:MED、AS-PATH，ORIGIN3、BGPAdministrativedistanceA：BGPhasadistancebgpcommandthatallowsyoutosetdifferentadministrativedistancesforthreer

3、outetypes:external,internal,andlocal.Externalroute20Internalroute200Localroute2004、WhichpictureisTrafficShape,why?A:Policingtypicallydropsexcesstraffic.Shapingsmoothtraffictoaspecificrateusingabuffer.5、Unequalcostload-sharingA:RouterEwillselectbothBandCasnexthoptore

4、achnetworkZ.Unequalcostloadsharinghappening.Thevariancecommandisusedtodeterminewhichroutesarefeasibleforunequal-costloadsharing.Variancedefinesamultiplierbywhichametricmaydiffer,orvary,fromthemetricofthelowest-costroute.Anyroutewhosemetricexceedsthemetricofthelowest

5、-costroute,multipliedbythevariance,willnotbeconsideredafeasibleroute.Thedefaultvarianceisone,meaningthatthemetricsofmultipleroutesmustbeequal,toloadbalance.Variancemustbespecifiedinwholenumbers.Thefollowingthreeconditionsmustbemetforaroutetobeincludedinunequal-costl

6、oadsharing:·Themaximum-pathslimitmustnotbeexceededasaresultofaddingtheroutetoaload-sharinggroup.·Thenext-hoproutermustbemetricallyclosertothedestination.Thatis,itsmetricfortheroutemustbesmallerthanthelocalrouter'smetric.Anext-hoprouter,beingclosertothedestination,is

7、oftenreferredtoasthedownstreamrouter.(加入负载均衡的下一跳的路由器必须要满足FC，即AD

8、lassociationbetweentwoneighborsoverwhichrouteinformationisexchanged.Whenadjacencieshavebeenestablished,therouterwillreceiveupdatesfromitsn