Cisco ONS 15454 - 2.7.97 EXCCOL; Clear the EXCCOL Alarm

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.97 EXCCOL
Step 3 From the row of information for the fiber span, complete the “Identify a BLSR Ring Name or Node ID
Number” procedure on page 2-261 to identify the node ID, ring name, and the slot and port in the
East Line column and West Line column. Record the above information.
Step 4 Click View > Go to Network View.
Step 5 Delete and recreate the BLSR:
a. Click the Provisioning > BLSR tabs.
b. Click the row from Step 3 to select it and click Delete.
c. Click Create.
d. Fill in the ring name and node ID from the information collected in Step 3.
e. Click Finish.
Step 6 Display node view and click the Maintenance > BLSR tabs.
Step 7 Change the West Line field to the slot you recorded for the East Line in Step 3.
Step 8 Change the East Line field to the slot you recorded for the West Line in Step 3.
Step 9 Click OK.
Step 10 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.
2.7.97 EXCCOL
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: EQPT
The Excess Collisions on the LAN alarm indicates that too many collisions are occurring between data
packets on the network management LAN, and communications between the ONS 15454 and CTC could
be affected. The network management LAN is the data network connecting the workstation running the
CTC software to the TCC2/TCC2P. The problem causing the alarm is external to the ONS 15454.
Troubleshoot the network management LAN connected to the TCC2/TCC2P for excess collisions. You
might need to contact the system administrator of the network management LAN to accomplish the
following steps.
Clear the EXCCOL Alarm
Step 1 Verify that the network device port connected to the TCC2/TCC2P has a flow rate set to 10 Mb,
half-duplex.
Step 2 If the port has the correct flow rate and duplex setting, troubleshoot the network device connected to the
TCC2/TCC2P and the network management LAN.
Step 3 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.