Cisco 15310-MA Anleitung zur Fehlerbehebung PDF herunterladen (Seite 237)

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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, Release 9.0

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Chapter 2 Alarm Troubleshooting

Alarm Procedures

Step 3 If the correct port is in service, clean the fiber according to site practice. If no site practice exists,

complete the procedure in the “Maintain the Node” chapter in the Cisco ONS 15310-CL and

Cisco ONS 15310-MA Procedure Guide.

Step 4 If the alarm does not clear, verify that the power level of the optical signal is within the OC-3 or OC-12

port receiver specifications. The “Install Hardware” chapter in the Cisco ONS 15310-CL and

Cisco ONS 15310-MA Procedure Guide lists these specifications for each OC-N port.

Step 5 If the optical power level is within specifications, use an optical test set to verify that a valid signal exists

on the line. For specific procedures to use the test set equipment, consult the manufacturer. Test the line

as close to the receiving card as possible.

Step 6 Repeat Steps 1 to 5 for any other port on the card reporting the LOS (OC-N).

Step 7 If the alarm does not clear, look for and troubleshoot any other alarm that could identify the source of

the problem.

Step 8 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.

2.7.155 LO-TXPOWER

Default Severity: Minor (MN), Non-Service-Affecting (NSA)

SONET Logical Objects: EQPT, OCN

DWDM Logical Object: PPM

The Equipment Low Transmit Power alarm is an indicator for OCN port transmitted optical signal

power. LO-TXPOWER occurs when the measured optical power of the transmitted signal falls under the

threshold. The threshold value is user-provisionable.

Clear the LO-TXPOWER Alarm

Step 1 Display the reporting card’s card view.

Step 2 Click the Provisioning > Optical > Optics Thresholds tabs.

Step 3 Increase the TX Power Low column value by 1%.

Step 4 If the card transmit power setting cannot be increased without affecting the signal, complete the

“Physically Replace a Card” procedure on page 2-163.

Caution Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,

perform an external switch if a switch has not already occurred. See the “2.10.1 Protection Switching,

Lock Initiation, and Clearing” section on page 2-156 for commonly used traffic-switching procedures.

Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL

or ONS 15310-MA.

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Cisco 15310-MA Anleitung zur Fehlerbehebung Seite 237