Zte ZXR10 5900E Series - SFlow Maintenance and Diagnosis

ZXR105900ESeriesCongurationGuide(IPv4Routing)
isused,theASnumberrangeis1–65535.Currentversionalsosupports32–bitASwhich
isintherangeof1-4294967295.
BGPWorkingPrinciple
lBGPAttribute
TheroutersendsBGPupdatemessagesrelatedtothedestinationnetworktoitspeer
router.TheBGPupdatingmessagescontaintheinformationrelatedtoBGPmetric
(calledpathattribute).BymeansofBGPattributes,thespecialroutecanbedescribed
indetail.Inthisway,usercanselectandlterroutes.Thepathattributeshavethe
followingfourindependenttypes:
1.Well-knownmandatoryattribute:Thiskindofattributeshastobecontainedby
routedescription.
àAS-path
àNext-hop
àOrigin
2.Well-knowndiscretionaryattribute:Thekindofattributesisnotnecessary
containedbyroutedescription.
àLocalpreference
àAtomicaggregate
3.Optionaltransitiveattributes:ThiskindofattributesdoesnotrequirethatallBGP
examplessupportit.However,ifitissupported,itcanbetransmittedtoitsBGP
neighbor.while,ifitisnotsupportedbythecurrentrouter,itwillbetransmittedto
otherBGProuterscontinuously.
àAggregator
àCommunity
4.Optionalnontransitiveattribute:Thiskindofattributesshowsthattherouters
whichdonotsupporttheattributeneedtodeleteit.
Multi-ExitDiscriminator(MED)
ThekindsofBGPattributescanbeexpandedinto256butnotallattributesareused
together.Theattributescanbeusedselectivelyandexibly.
lBGPMessageType
FourtypesofmessagesareavailableforBGPworking:
àOPEN
ItestablishesBGPconnection.ThemessageincludesBGPversionnumber,local
ASnumberandtheshortestholdtimefornegotiation,BGPROUTER-IDand
otheroptionalparameters.
àUPDATE
5-2
SJ-20150114102049-003|2015-01-15(R1.0)ZTEProprietaryandCondential