Chapter2Alarm
EffectontheSystem
Iftheremotelinkisfaulty,theserviceattheportmaybedisconnected.
PossibleCauses
Theremoteenddetectslinkfault.
HandlingProcedure
ChecktheLMTorpanelstatusforthephysicalconnectionsoftheremoteopticalport.
Troubleshoottheports.
2.2.43134243771EFMdiscoveryprocessfailure
AlarmProperty
lAlarmCode:134243771
lAlarmInformation:Thealarmisreportedifthediscoveryprocessfails.
lAlarmLevel:Critical
lAlarmType:CommunicationsAlarm
Sub-codeDescription
1.Sub-code1:Localconnectionfailure;
2.Sub-code2:ThelocalOAMdoesnotreceivetheOAMpacketwithinspeciedtime;
3.Sub-code3:TheremoteOAMdoesnotsatisfytherequirementofthelocalOAM;
4.Sub-code4:ThelocalOAMdoesnotsatisfytherequirementoftheremoteOAM.
EffectontheSystem
Theserviceattheportmaybedisconnected.
PossibleCauses
Thediscoveryprocessfails.
HandlingProcedure
1.OntheLocalMaintenanceT erminal(LMT),checkwhethertherearealarmsrelatedto
theopticalmoduleorboards.
lIfyes,removethefaultsoftheopticalmoduleandboard.
lIfno,gotostep2.
2.OntheLMT,checkwhethertheopticalbersorcablesarefaulty.
lIfyes,replacethefaultyberorcable.
lIfno,gotostep3.
3.OntheLMT,checktheOAMparametersettingofNEsatthetwoendstoseewhether
theyareconsistent.
lIfyes,modifytheOAMparametersatbothendstobeconsistent.
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