Lpbkds1Feac; Lpbkds3Feac; Lpbkfacility (Ds-N) - Cisco ONS 15327 User Documentation

Alarm Procedures

14.4.78 LPBKDS1FEAC

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A loopback due to FEAC command DS1 (LPBKDS1FEAC) condition on the XTC card means a DS-1
loopback signal is received from the far-end node due to a Far-End Alarm and Control (FEAC)
command. An FEAC command is often used with loopbacks.
Loopback is a commonly used troubleshooting technique. A signal is sent out on a link or part of the
network and returned to the sending device. A troubleshooter can compare the quality of the sent signal
and the returned signal to determine the condition of an isolated circuit. By setting up loopbacks on
various parts of the network and excluding other parts, a troubleshooter can logically narrow down the
source of the problem. For more information about loopbacks, see the
page
The CTC permits loopbacks on an in-service circuit. This operation is service-affecting.
Caution
Note This is an informational alarm.

14.4.79 LPBKDS3FEAC

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A loopback due to FEAC command DS-3 (LPBKDS3FEAC) condition means an XTC-28-3 loopback
signal is received from the far-end node because of an FEAC command. An FEAC command is often
used with loopbacks. This condition is only reported by the XTC-28-3 card. An XTC-28-3 card both
generates and reports FEAC alarm/conditions.
Loopback is a commonly used troubleshooting technique. A signal is sent out on a link or part of the
network and returned to the sending device. A troubleshooter can compare the quality of the sent signal
and the returned signal to determine the condition of this isolated circuit. By setting up loopbacks on
various parts of the network and excluding other parts, a troubleshooter can logically narrow down the
source of the problem. For more information about loopbacks, see the
page
Caution The CTC permits loopbacks on an in-service circuit. This operation is service-affecting.
This is an informational alarm.
Note

14.4.80 LPBKFACILITY (DS-N)

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Cisco ONS 15327 User Documentation, R3.3
14-58
Not Alarmed (NA) (Condition)
12-19.
Not Alarmed (NA) (Condition)
12-19.
Not Alarmed (NA) (Condition)
Chapter 14 Alarm Troubleshooting
"Network Tests" section on
"Network Tests" section on
June 2002