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Cisco ONS 15327 Troubleshooting Guide, R3.4
March 2004
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Step 7 Change the West Line drop-down menu to the slot you recorded for the East Line in Step 3.
Step 8 Change the East Line drop-down menu 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 onto http://www.cisco.com/tac for more information or call TAC to report
a service-affecting problem (1-800-553-2447).
2.6.53 EXCCOL
• Minor (MN), Non-Service Affecting (NSA)
The Excess Collisions on the LAN (EXCCOL) alarm indicates that too many collisions are occurring
between data packets on the network management LAN, and communications between the ONS 15327
and CTC might be affected. The network management LAN is the data network connecting the
workstation running the CTC software to the XTC card. The problem causing the alarm is external to the
ONS 15327.
Troubleshoot the network management LAN connected to the XTC card for excess collisions. You might
need to contact the system administrator of the network management LAN to accomplish the following
steps.
Procedure: Clear the EXCCOL Alarm
Step 1 Verify that the network device port connected to the XTC card 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
XTC card and the network management LAN.
Step 3 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC
(1-800-553-2447).
2.6.54 EXERCISE-RING-REQ
• Not Alarmed (NA), Non-Service Affecting (NSA)
The Exercise Request on Ring (EXERCISE-RING-REQ) condition occurs when optical (traffic) cards
in two-fiber BLSRs are tested using the EXERCISE RING command.
Note EXERCISE-RING-REQ is an informational condition. It does not require troubleshooting.
2.6.55 EXERCISE-SPAN-REQ
• Not Alarmed (NA), Non-Service Affecting (NSA)
The Exercise Request on Span (EXERCISE-SPAN-REQ) condition occurs when optical (traffic) cards
in a BLSR are tested using the EXERCISE SPAN command.