Lpbkfacility (Ce100T); Clear The Lpbkfacility (Ce100T) Condition; Lpbkfacility (Ds1, Ds3) - Cisco ONS 15310-CL Troubleshooting Manual

Chapter 1 Alarm Troubleshooting
The DS-3 Loopback Command Sent To Far End condition occurs on a near-end 15310-CL-CTX,
DS1-28/DS3-EC1-3, or DS1-84/DS3-EC1-3 card when you send a DS-3 FEAC loopback.
LPBKDS3FEAC-CMD is an informational condition and does not require troubleshooting.
Note

1.7.155 LPBKFACILITY (CE100T)

A Loopback Facility condition on a CE-100T-8 port occurs when a software facility (line) loopback is
active for a port on the card.
For information about troubleshooting optical circuits with loopbacks, refer to the
Troubleshooting Tests" section on page

Clear the LPBKFACILITY (CE100T) Condition

Complete the
Step 1
If the condition does not clear, log into the Technical Support Website at
Step 2
http://www.cisco.com/techsupport for more information or call Cisco TAC (1 800 553-2447).

1.7.156 LPBKFACILITY (DS1, DS3)

A Loopback Facility condition for a DS-1 or DS-3 signal occurs when a software facility (line) loopback
is active for a DS-1 or DS-3 port on a 15310-CL-CTX, DS1-28/DS3-EC1-3, or DS1-84/DS3-EC1-3 card.
For information about troubleshooting optical circuits with loopbacks, refer to the
of Failure on an Electrical Circuit Path" section on page
"1.1 Network Troubleshooting Tests" section on page
CTC permits loopbacks to be performed on an in-service (IS) circuit. Performing a loopback is
Note
Service-Affecting (SA). If you did not perform a lock out or Force switch to protect traffic, the
LPBKFACILITY condition can be accompanied by a more serious alarms such as LOS.
DS-3 facility (line) loopbacks do not transmit an AIS in the direction away from the loopback. Instead
Note
of AIS, a continuance of the signal transmitted to the loopback is provided.
78-17235-01
SONET Logical Object: DS3
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: CE100T
"Clear an Ethernet Card Loopback Circuit" procedure on page
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: DS1, DS3
1-2.
1-3. Facility loopbacks are described in the
1-2.
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
1.7.155 LPBKFACILITY (CE100T)
"1.1 Network
1-158.
"1.2 Identify Points
1-103