ECS4100 Series CLI Reference Guide-R07

Chapter 29 | CFM Commands
Fault Generator Operations
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Command Usage
◆ 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 169: Remote MEP Priority Levels
Priority Level Level Name Description
1allDefAll defects.
2 macRemErrXcon DefMACstatus, DefRemoteCCM, DefErrorCCM, or
DefXconCCM.
3 remErrXcon DefErrorCCM, DefXconCCM or DefRemoteCCM.
4 errXcon DefErrorCCM or DefXconCCM.
5xconDefXconCCM
6 noXcon No defects DefXconCCM or lower are to be reported.
Table 170: 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.