Specifications

1-52
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
b. Position the cursor over the slot reporting the alarm.
c. Right-click and choose RESET CARD.
Step 8 Switch from the far-end working card to the far-end protect card.
Step 9 If the alarm persists, replace the far-end card.
Note When you replace a card with an identical type of card, you do not need to make any changes
to the database.
1.3.73 LOP-V
• Major, Service affecting
LOP-V indicates a loss of pointer at the VT level. The VT, or electrical, layer occurs when the SONET
signal is broken down into an electrical signal, for example, when an optical signal comes into an ONS
15454. The ONS 15454 demultiplexes this optical signal. One of the channels separated from the optical
signal cross connects into a ONS 15454 DS3XM-6 or DS-1 port. The ONS 15454 reports the LOS-V
alarm.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15454.
Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf
assembly.
Procedure: Clear the LOP-V Alarm on the DS3XM-6 or DS-1 Card
Step 1 Verify the stability of the cabling and physical connections on the reporting card.
Step 2 Perform a software reset on the reporting card:
a. Display the CTC node view.
b. Position the cursor over the slot reporting the alarm.
c. Right-click and choose RESET CARD.
Step 3 Do a manual switch to move traffic away from the card:
a. At the node view, click the Maintenance > Protection tabs.
b. Double-click the protection group that contains the reporting card.
c. Click the Protect/Standby card of the selected groups.
d. Click Manual and OK.
Note If you do not have a protect card for the reporting card, create a new circuit on the
reporting card to achieve the same effect.
Step 4 Clear the manual switch:
a. At the node view, click the Maintenance > Protection tabs.