Cisco NCS 2000 series Troubleshoot Manual

Step 7 If the signal is valid, ensure that the transmit and receive outputs from the patch panel to your equipment are properly
connected. For more information about fiber connections and terminations, refer to the Turn Up a Node chapter in the
Configuration guide.
Step 8 If a valid signal exists but the alarm does not clear, replace the cable connector on the NCS system.
Step 9 Repeat Steps Step 2, on page 275 through Step 6, on page 275 for any other port on the card that reports the LOS (ESCON).
Step 10 If the alarm does not clear, the cabling could still be faulty despite correct attachments. Use the test set to locate the
bad cable and replace it using the procedures in the Configuration guide.
Step 11 If the alarm does not clear, look for any card-level alarm that could cause this port alarm.
Step 12 If the alarm does not clear, complete the Physically Replace a Card, on page 453 procedure for the reporting card.
If the alarm does not get cleared, you need to report a Service-Affecting (SA) problem. Log into the Technical Support
Website at http://www.cisco.com/c/en/us/support/index.html for more information or log into http://www.cisco.com/
c/en/us/support/web/tsd-cisco-worldwide-contacts.html to obtain a directory of toll-free Technical Support numbers
for your country.
LOS (ISC)
Default Severity: Critical (CR), Service-Affecting (SA)
Logical Object: ISC
The LOS alarm for the ISC port applies to TXPP_MR_2.5G or TXP_MR_2.5G client PPMs (SFPs) provisioned
at the ISC port rate. Troubleshooting is similar to the LOS (2R) alarm.
Clear the LOS (ISC) Alarm
Before you begin
Always use the supplied electrostatic discharge wristband when working with a powered NCS system. Plug
the wristband cable into the ESD jack located on the lower-right edge of the shelf assembly.
Caution
SUMMARY STEPS
1. Complete the Clear the LOS (2R) Alarm, on page 272 procedure.
DETAILED STEPS
Complete the Clear the LOS (2R) Alarm, on page 272 procedure.
If the alarm does not get cleared, you need to report a Service-Affecting (SA) problem. Log into the Technical Support
Website at http://www.cisco.com/c/en/us/support/index.html for more information or log into http://www.cisco.com/c/
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
276
Alarm Troubleshooting
LOS (ISC)

Cisco NCS 2000 series Specifications

General

Brand	Cisco
Model	NCS 2000 series
Category	Network Hardware
Language	English