Cisco ONS 15454 Troubleshooting Manual page 362

2.7.235 LPBKDS3FEAC
Clear the LPBKCRS Condition
To remove the loopback cross-connect condition, double-click the optical card in CTC to open the card
Step 1
view.
Complete the
Step 2
If the condition does not clear, log into the Technical Support Website at
Step 3
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.235 LPBKDS3FEAC
A Loopback Due to FEAC Command DS-3 condition occurs when a DS3XM-6, DS3XM-12, DS3-12E,
or DS3/EC1-48 port loopback signal is received in C-bit framing mode from the far-end node because
of an FEAC command. An FEAC command is often used with loopbacks. LPBKDS3FEAC is only
reported by these DS cards. DS3XM-6, DS3XM-12, and DS3/EC1-48 cards generate and report FEAC
alarms or conditions, but a DS3-12E card only reports FEAC alarms or conditions.
Caution CTC permits loopbacks on an in-service (IS) circuit. Loopbacks are Service-Affecting (SA).
LPBKDS3FEAC is an informational condition and does not require troubleshooting.
Note
Clear the LPBKDS3FEAC Condition
In node view, double-click the DS-3 card to open the card view.
Step 1
Click the Maintenance > DS3 tabs.
Step 2
Click the cell for the port in the Send Code column and click No Code from the drop-down list.
Step 3
If the condition does not clear, log into the Technical Support Website at
Step 4
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.236 LPBKDS3FEAC-CMD
The DS-3 Loopback Command Sent To Far End condition occurs on the near-end node when you send
a DS-3 FEAC loopback on DS3XM-6, DS3XM-12, or DS3/EC1-48 cards. For more information about
FEAC loopbacks, see the
FEAC Loopbacks" section on page
Cisco ONS 15454 Troubleshooting Guide, R8.5
2-168
"Clear an OC-N Card Cross-Connect (XC) Loopback Circuit" procedure on page
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
"1.3 Troubleshooting DS3XM-6 or DS3XM-12 Card Electrical Paths With
1-45.
Chapter 2 Alarm Troubleshooting
2-276.
November 2009