Cisco 15310-MA Průvodce řešením problémů stáhnout pdf (Strana 209)

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

78-18394-01

Chapter 2 Alarm Troubleshooting

Alarm Procedures

The Equipment High Transmit Power alarm is an indicator on the OC-N port transmitted optical signal

power. HI-TXPOWER occurs when the measured optical power of the transmitted signal exceeds the

threshold.

Note For information about this alarm that applies to DWDM objects, refer to the “Alarm Troubleshooting”

chapter in the Cisco ONS 15454 DWDM Troubleshooting Guide.

Clear the HI-TXPOWER Alarm

Step 1 In node view, display the card view for the controller card (15310-CL-CTX or CTX2500 card).

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

Step 3 Decrease (change toward the negative direction) the OPT-HIGH column value by 1%.

Step 4 If the card transmit power setting cannot be lowered without disrupting 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.

Note When you replace a card with the identical type of card, you do not need to make any changes

to the database.

Step 5 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).

2.7.112 HLDOVRSYNC

Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)

SONET Logical Object: NE-SREF

The Holdover Synchronization Mode condition is caused by loss of the primary and second timing

references in the node. Timing reference loss occurs when line coding on the timing input is different

from the configuration on the node, and it often occurs during the selection of a new node reference

clock. The condition clears when primary or second timing is reestablished. After the 24-hour holdover

period expires, timing slips could begin to occur on an ONS 15310-CL or ONS 15310-MA relying on

an internal clock.

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