CANOGA PERKINS 9145E NID Software Version 3.1 - Manual (Page 166)

Service OAM 9145E NID Software User’s Manual
Maintenance End Points
151
Figure 11-23 Maintenance End Point Attributes screen (Y.1731)
11.6.5 View the Continuity Check Database for a Maintenance End Point
A MEP periodically transmits a continuity check message (CCM) to ensure connectivity over the
MA to which it belongs. No reply is sent in response to receiving a CCM. The CCM provides a
means to detect connectivity failures in an MA. A connectivity failure occurs if a MEP:
• is unable to receive for more than 3.5 transmission intervals a CCM from a peer MEP in
its MA, indicating either a MEP failure or a network failure. This defect is identified as
RemCCM.
• receives a CCM with an incorrect transmission interval or an incorrect MEP ID, indicating
a configuration error. This defect is identified as ErrCCM.
• receives an AIS message indicating a defect at the underlying level. This defect is identi-
fied as AIS.
• receives a CCM with an incorrect MEP ID or MAID, indicating a configuration error or a
cross connect error. This defect is identified as XCON.
• receives a CCM with an MD Level lower than that of the MEP, indicating a configuration
error or a cross connect error.
• receives a CCM containing a Port Status TLV or Interface Status TLV indicating a failed
bridge port or aggregated port on the far end. This defect is identified as MAC.
Every active MEP receives information about other MEPs in the Maintenance Association. The
information is held in its MEP CCM Database. To view database entries:
Canoga Perkins Corp. Ethernet Network Interface Device 02-JAN-2009
9145E-101-1-0 V03.10(GA0014) 05:15:27
-----------------------MAINTENANCE END POINT ATTRIBUTES-------------------------
MEP ID: 1 Direction: Up Level: 7
MEG ID: 101 Port: User MAC: 00:40:2A:01:EE:23
1) Admin status: Enabled
2) CCM Transmit status: Enabled
3) Primary VLAN ID: 900
4) Fault alarm Detect time: 2500
5) Fault alarm clear time: 10000
6) CCM/LTM Priority: 7
7) Lowest alarm priority: MacRemErrXcon A is
Fault notification state: Defect reported
Defects: Random
Next Linktrace trans. ID: 1 Next Loopback trans. ID: 2
8) AIS Transmit interval: 1 sec
9) AIS Priority bits: 1
Select [1-9], (T) for Linktrace, (L) for Loopback:
------------------------------------Messages-----------------------------------