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
Step 3 If the ping is successful, it demonstrates that an active TCP/IP connection exists. Restart CTC by
completing the following steps:
a. Exit from CTC.
b. Reopen the browser.
c. Log into CTC.
Step 4 Using optical test equipment, verify that proper receive levels are achieved. (For specific procedures to
use the test set equipment, consult the manufacturer.)
Step 5 Verify that the optical LAN cable is properly connected and attached to the correct port. For more
information about fiber connections and terminations, refer to the “Install Hardware” chapter in the
Cisco ONS15310-MA SDH Procedure Guide.
Caution Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15310-MA SDH.
Step 6 If the fiber cable is properly connected and attached to the port, verify that the cable connects the port
to another Ethernet device and is not misconnected to an STM1 or STM4 port. For more information
about fiber connections and terminations, refer to the “Install Hardware” chapter in the
Cisco ONS15310-MA SDH Procedure Guide. For more information about Ethernet cards, refer to the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration
Guide.
Step 7 If you are unable to establish connectivity, replace the fiber cable with a new known-good cable. To do
this, refer to the “Install Hardware” chapter in the Cisco ONS15310-MA SDH Procedure Guide for
procedures.
Step 8 If you are unable to establish connectivity, perform standard network or LAN diagnostics. For example,
trace the IP route, verify cable continuity using site practice, and troubleshoot any routers between the
node and CTC.
Step 9 If the alarm 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) in order to report a Service-Affecting (SA) problem.
2.7.32 CARLOSS (ML100T)
Default Severity: Major (MJ), Service-Affecting (SA)
SDH Logical Objects: ML100T
A Carrier Loss alarm on an ML-100T-8 Ethernet card is the data equivalent of the “LOS (STM)” alarm
on page 2-98. The Ethernet port has lost its link and is not receiving a valid signal.
A CARLOSS alarm occurs when the Ethernet port has been configured from the Cisco IOS command
line interface (CLI) as a no-shutdown port and one of the following problems also occurs:
• The cable is not properly connected to the near or far port.
• Autonegotiation is failing.
• The speed (10/100 ports only) is set incorrectly.

Cisco CTX2500 Specifications

General

Brand	Cisco
Model	CTX2500
Category	Network Card
Language	English