Chapter7ServiceConguration
noreferenceclock.
ntptimezone:0
Intheviewedinformation,ntpis-synchronizedmeansifthecur-
rentswitchissynchronizedwithserver .
OAM
OAMOverview
OAMOverview
WiththerapiddevelopmentofEthernettechnology,Ethernetnet-
workingproportiongraduallyincreasesinnetworkstructure.Eth-
ernetdevicesreplacingATMnetworkdevicesandotherdevices
arewidelyusedinaccess,convergencelayerandbackbonenet-
work.Duetothegreatapplication,OperationAdministrationMain-
tenance(OAM)functionofEthernetdevicesreceivemuchconcern.
ThemainEthernetOAMprotocolsareshownbelow.
�IEEE802.3ah(Operations,Administration,andMaintenance-
OAM)
�IEEE802.1ag(ConnectivityFaultManagement)(Draft)
�ITU-Y1731(OAMfunctionsandmechanismsforEthernet
basednetworks)(Draft)
OAMFunction
OAMProtocol
Function
IEEE802.3ahoperations,administrationandmaintenancestan-
dardistheformalstandard,whichaimsatthemanagementof
linklevel.Itmonitorsandtroubleshootsthepointtopoint(virtual
pointtopoint)Ethernetlink.Ithastheimportantmeaningfor
connectionmanagementofLastOneMile.Thefaultstakeplace
constantlyonLastOneMile.
ZXR102900seriesswitchsupportsIEEE802.3ah.
EthernetOAM
MainFunction
EthernetOAMfunctiononZXR102900seriesswitchcanbeclas-
siedintothefollowingtypes.
1.OAMDiscoveryFunction
AfterenablingEthernetOAMfunction,ZXR102900series
switchcandetecttheremoteDTEdevicewhichhasOAM
function.AftercoordinatingwiththepeerOAM,enternormal
EthernetOAMinteractionprocess.
2.RemoteLinkEventAlarm
OAMfunctioninspectstheeventsofremotelink,andadopts
thecorrespondingrespondingmethods.Whenthefaulttakes
placeonremotelink,OAMdenestheeventandannounces
CondentialandProprietaryInformationofZTECORPORATION185