Cisco CTX2500 User Manual

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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
2.7.58 ETH-LINKLOSS
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Object: NE
The Rear Panel Ethernet Link Removed condition, if enabled in the network defaults, is raised under the
following conditions:
• The node.network.general.AlarmMissingBackplaneLAN field in NE default is enabled.
• The node is configured as a gateway network element (GNE).
• The LAN cable is removed.
For more information about Ethernet operation in the ONS 15310-MA SDH, refer to the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration
Guide.
Clear the ETH-LINKLOSS Condition
Step 1 To clear this condition, reconnect the LAN cable on the front of the node.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.59 EXCCOL
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SDH 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 15310-MA SDH and
CTC could be affected. The network management LAN is the data network connecting the workstation
running the CTC software to the controller card. The problem causing the alarm is external to the node.
Troubleshoot the network management LAN connected to the ONS 15310-MA SDH 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 ONS 15310-MA SDH 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
node and the network management LAN.

Cisco CTX2500 Specifications

General

Brand	Cisco
Model	CTX2500
Category	Network Card
Language	English