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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.202 LOF (DS3)
g. Click Apply.
Note On the Line tab, the B8ZS coding field is normally paired with ESF in the Framing field.
AMI coding is normally paired with SF (D4) in the Framing field.
Note When you replace a card with the identical type of card, you do not need to make any
changes to the database.
Step 2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC 1 800 553-2447 in order to report a Service-Affecting (SA)
problem.
2.7.202 LOF (DS3)
Default Severity: Critical (CR), Service-Affecting (SA)
SONET Logical Object: DS3
The DS-3 LOF alarm indicates that the receiving ONS 15454 has lost frame delineation in the incoming
DS-3 data stream on DS3XM-6, DS3XM-12, or add DS3/EC1-48 cards. The framing of the transmitting
equipment could be set to a format that differs from the receiving system. On DS3XM cards, the alarm
occurs only on cards with the provisionable framing format set to C Bit or M13 and not on cards with
the provisionable framing format is set to unframed.
Clear the LOF (DS3) Alarm
Step 1 Change the line type of the non-ONS equipment attached to the reporting card to C Bit:
a. Display the card view of the reporting card.
b. Click the Provisioning > Line tabs.
c. Verify that the line type of the reporting port matches the line type of the signal source.
d. If the signal source line type does not match the reporting port, click Line Type and choose C Bit
from the drop-down list.
e. Click Apply.
Step 2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC 1 800 553-2447 in order to report a Service-Affecting (SA)
problem.
2.7.203 LOF (E1)
Default Severity: Major (MJ), Service-Affecting (SA)
SONET Logical Object: E1
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