Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
Step 7 Change the West line pull-down menu to the slot/port you recorded for the East line in Step 3.
Step 8 Change the East line pull-down menu to the slot/port you recorded for the West line in Step 3.
Step 9 Click OK.
Step 10 Click Yes at the Ring Map Change dialog box.
Step 11 Click Accept at the new Ring Map.
1.3.39 EXCCOL
• Minor, Non-service affecting
The Excess Collisions on the LAN alarm indicates that too many collisions are occurring on the network
management LAN. The network management LAN is the data network connecting the workstation
running the CTC software to the TCC+ card. This problem is external to the ONS 15454.
Procedure: Clear the EXCCOL Alarm
Troubleshoot the network management LAN connected to the TCC+ card for excess collisions. You may
need to contact the system administrator of the network management LAN to accomplish the following
steps:
Step 1 Verify that the network device port connected to the TCC+ card has a flow rate set to 10 Mb, half-duplex.
Step 2 Troubleshoot the network device connected to the TCC+ card and the network management LAN.
1.3.40 EXERCISE-SPAN-FAIL
• Not Alarmed (NA) (Condition)
The Exercise Span command issues span switching of the requested channel without completing the
actual bridge and switch. The EXERCISE-SPAN-FAILED alarm is raised if the command was issued
but the exercise did not take place.
1.3.41 EXERCISE-RING-FAIL
• Not Alarmed (NA) (Condition)
The Exercise-Ring command issues ring protection switching of the requested channel without
completing the actual bridge and switch. The EXERCISE-RING-FAILED alarm is raised if the
command was issued but the exercise did not take place.
1.3.42 EXT
• Major, Service affecting