Edge-Core ES3510MA-DC, Management Manual, Page: 996 / 1098

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◆ A fault alarm can generate an SNMP notification. It is issued when the
MEP fault notification generator state machine detects that a configured
time period (see the mep fault-notify alarm-time command) has passed
with one or more defects indicated, and fault alarms are enabled at or
above the priority level set by this command. The state machine
transmits no further fault alarms until it is reset by the passage of a
configured time period (see the mep fault-notify reset-time command)
without a defect indication. The normal procedure upon receiving a
fault alarm is to inspect the reporting MEP’s managed objects using an
appropriate SNMP software tool, diagnose the fault, correct it, re-
examine the MEP’s managed objects to see whether the MEP fault
notification generator state machine has been reset, and repeat those
steps until the fault is resolved.
◆ Only the highest priority defect currently detected is reported in the
fault alarm.
◆ Priority defects include the following items:
Table 143: Remote MEP Priority Levels
Priority Level Level Name Description
1 allDef All defects.
2 macRemErrXcon DefMACstatus, DefRemoteCCM, DefErrorCCM, or
DefXconCCM.
3 remErrXcon DefErrorCCM, DefXconCCM or DefRemoteCCM.
4 errXcon DefErrorCCM or DefXconCCM.
5 xcon DefXconCCM
6 noXcon No defects DefXconCCM or lower are to be
reported.
Table 144: MEP Defect Descriptions
Field Description
DefMACstatus Either some remote MEP is reporting its Interface Status TLV as
not isUp, or all remote MEPs are reporting a Port Status TLV that
contains some value other than psUp.
DefRemoteCCM The MEP is not receiving valid CCMs from at least one of the
remote MEPs.
DefErrorCCM The MEP has received at least one invalid CCM whose CCM
Interval has not yet timed out.
DefXconCCM The MEP has received at least one CCM from either another MAID
or a lower MD Level whose CCM Interval has not yet timed out.