Clear The Tim Alarm - Cisco NCS 2000 series Troubleshooting Manual

Alarm Troubleshooting
TIM
Default Severity: Critical (CR), Service-Affecting (SA)
Logical Object: TRUNK
The Section TIM alarm occurs when the expected J0 section trace string does not match the received section
trace string. This occurs because the data being received is not correct, and the receiving port could not be
connected to the correct transmitter port.
If the alarm occurs on a port that has been operating with no alarms, the circuit path has changed due to a
fibering misconnection, a TL1 routing change, or to someone entering an incorrect value in the Current
Transmit String field.
TIM occurs on a port that has previously been operating without alarms if someone switches optical fibers
that connect the ports. TIM is usually accompanied by other alarms, such as the LOS (OCN/STMN) or
UNEQ-P (or HP-UNEQ) alarms. (For instructions to clear these alarms, refer to the Alarm Troubleshooting
chapter of the Troubleshooting guide.) If these alarms accompany a TIM alarm, reattach or replace the original
cables/fibers to clear the alarms. If a Transmit or Expected String was changed, restore the original string.

Clear the TIM Alarm

SUMMARY STEPS
1. Ensure that the physical fibers are correctly configured and attached. To do this, consult site documents.
For more information about cabling a DWDM node, refer to the Turn Up a Node chapter in the
Configuration guide.
2. If the alarm does not clear, you can compare the J0 expected and transmitted strings and, if necessary,
change them:
3. If the alarm does not clear, ensure that the signal has not been incorrectly routed. (Although the system
routes circuits automatically, the circuit route could have been changed using TL1.) If necessary, manually
correct the routing using TL1. For instructions, refer to the SONET TL1 Reference guide.
DETAILED STEPS
Step 1
Ensure that the physical fibers are correctly configured and attached. To do this, consult site documents. For more
information about cabling a DWDM node, refer to the Turn Up a Node chapter in the Configuration guide.
Step 2
If the alarm does not clear, you can compare the J0 expected and transmitted strings and, if necessary, change them:
a) Log into the circuit source node and click the Circuits tab.
b) Select the circuit reporting the condition, then click Edit.
c) In the Edit Circuit window, check the Show Detailed Circuit Map check box and click Apply.
d) On the detailed circuit map, right-click the source circuit port and choose Edit J0 Path Trace (port) from the shortcut
menu.
e) Compare the Current Transmit String and the Current Expected String entries in the Edit J0 Path Trace dialog box.
f) If the strings differ, correct the Transmit or Expected strings and click Apply.
g) Click Close.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
TIM
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