Los (Isc) - Cisco NCS 2000 series Troubleshooting Manual

LOS (ISC)

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
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
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
c/en/us/support/web/tsd-cisco-worldwide-contacts.html
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
Caution
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.
SUMMARY STEPS
1. Complete the
DETAILED STEPS
Complete the Clear the LOS (2R) Alarm, on page 272
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
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
276
through Step 6, on page 275
Physically Replace a Card, on page 453
Clear the LOS (2R) Alarm, on page 272
procedure.
for any other port on the card that reports the LOS (ESCON).
procedure for the reporting card.
for more information or log into
to obtain a directory of toll-free Technical Support numbers
procedure.
for more information or log into
Alarm Troubleshooting
http://www.cisco.com/
http://www.cisco.com/c/