Troubleshooting of Data Path Alarms

This chapter provides a description, severity, and troubleshooting procedure for each commonly encountered data path alarm and condition in Cisco NCS 1020. When an alarm is raised, refer to its clearing procedure.

CHANNEL-NOISE-LOADED

Default Severity: Major (MJ), Non-Service-Affecting (NSA)

Logical Object: OTS-OCH

The CHANNEL-NOISE-LOADED alarm is raised when a traffic channel is loaded with noise. When a traffic channel fails, an equivalent temporary Amplified Spontaneous Emission (ASE) channel is inserted to maintain the spectral density of the port.

Clear the CHANNEL-NOISE-LOADED Alarm

Procedure

This alarm is cleared automatically when the original traffic channel is restored and the temporary ASE channel is removed. To check the channel status, use the show hw-module location location terminal-ampli command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

EGRESS-AMPLI-GAIN-HIGH

Default Severity: Non Service-Affecting (NSA)

Logical Object: Controller OTS

The EGRESS-AMPLI-GAIN-HIGH alarm is raised when the EGRESS EDFA module cannot reach the gain setpoint. This condition occurs if the amplifier reaches its range boundaries and the Egress Amplifier Gain Degrade is high.

Clear the EGRESS-AMPLI-GAIN-HIGH Alarm

Procedure

Step 1

Adjust the gain setting to a correct value using the controller ots egress-ampli-gain command.

If the APC value is set to the disabled state, the applied gain results from the configuration. Therefore, you must adjust the gain setting to a high value.

Step 2

Check the overall system settings, performance, and the configured EDFA Gain using the show configuration commit changes all command.

If the APC value is set to the enabled state, it may be due to an unexpected long or short span, or due to other measured channels. If the alarm persists, it may indicate an amplifier hardware failure.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

EGRESS-AMPLI-GAIN-LOW

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

Logical Object: Controller OTS

The EGRESS-AMPLI-GAIN-LOW alarm is raised when the Egress Amplifier Gain Degrade is Low.

Clear the EGRESS-AMPLI-GAIN-LOW Alarm

Procedure

Step 1

Adjust the gain setting to a correct value using the controller ots egress-ampli-gain command.

If the APC value is set to the disabled state, the applied gain results from the configuration. Therefore, you must adjust the gain setting to a low value.

Step 2

Check the overall system settings, performance, and the configured EDFA Gain using the show configuration commit changes all command.

If the APC value is set to the enabled state, it may be due to an unexpected long or short span, or due to other measured channels. If the alarm persists, it may indicate an amplifier hardware failure.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

EGRESS-AUTO-LASER-SHUT

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

Logical Object: Controller OTS

The EGRESS-AUTO-LASER-SHUT alarm is raised when the Egress EDFA shuts down its Tx power if it is not receiving any input power on the Line Rx port due to a fiber cut. This alarm is raised if the safety-control-mode is set to the auto state on line OTS controller.

EGRESS-AUTO-POW-RED

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

Logical Object: Controller OTS

The EGRESS-AUTO-POW-RED alarm is raised when LOS is detected on the line RX, the line TX normalizes the signal output power. In this case, if safety-control-mode set to auto, the egress amplifier goes into power reduction mode for safety reasons.

Clear the EGRESS-AUTO-POW-RED Alarm

Procedure

Step 1

Check if the egress amplifier automatic power reduction is active using the show controllers Controller-type R/S/I/P command.

Step 2

Check if the safety conditions of the Egress EDFA are active using the show controllers Controller-type R/S/I/P command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

HIGH-RX-BR-PWR

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

Logical Object: Controller OTS

The HI-RX-BR-PWR alarm is raised when there is a high back reflection power at the egress port due to a poor fiber connection.

Clear the HIGH-RX-BR-PWR Alarm

Procedure

Ensure that the span fiber is thoroughly clean and properly connected. For more details about cleaning fiber, see the Cleaning and Maintaining Fiber-Optic Connectors section of the Hardware Installation Guide for Cisco NCS 1020.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

HIGH-TX-BR-PWR

Default Severity: Critical (CR), Service-Affecting (SA)

Logical Object: Controller OTS

The HI-TX-BR-PWR alarm is raised when there is a high back reflection power at the ingress port due to a poor fiber connection.

Clear the HIGH-TX-BR-PWR Alarm

Procedure

Ensure that the span fiber is thoroughly clean and properly connected. For more details about cleaning fiber, ssee the Cleaning and Maintaining Fiber-Optic Connectors section of the Hardware Installation Guide for Cisco NCS 1020.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

INGRESS-AMPLI-GAIN-HIGH

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

Logical Object: Controller OTS

The INGRESS-AMPLI-GAIN-HIGH alarm is raised when the Ingress EDFA module cannot reach the gain setpoint. This condition occurs if the amplifier reaches its range boundaries.

Clear the INGRESS-AMPLI-GAIN-HIGH Alarm

Procedure

Step 1

Adjust the ingress amplification gain to a correct value using the controller ots ingress-ampli-gain command.

If the APC value is set to the disabled state, the applied gain results from the configuration. Therefore, you must adjust the gain setting to a high value.

Step 2

Check the overall system settings, performance, and the configured EDFA Gain using the show configuration commit changes all command.

If the APC value is set to the enabled state, it may be due to an unexpected long or short span, or due to other measured channels. If the alarm persists, it may indicate an amplifier hardware failure.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

INGRESS-AMPLI-GAIN-LOW

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

Logical Object: Controller OTS

The INGRESS-AMPLI-GAIN-LOW alarm is raised when the Ingress EDFA module cannot reach the gain setpoint. This condition occurs if the amplifier reaches its range boundaries.

Clear the INGRESS-AMPLI-GAIN-LOW Alarm

Procedure

Step 1

Adjust the ingress amplification gain to a correct value using the controller ots ingress-ampli-gain command.

If the APC value is set to the disabled state, the applied gain results from the configuration. Therefore, you must adjust the gain setting to a high value.

Step 2

Check the overall system settings, performance, and the configured EDFA Gain using the show configuration commit changes all command.

If the APC value is set to the enabled state, it may be due to an unexpected long or short span, or due to other measured channels. If the alarm persists, it may indicate an amplifier hardware failure.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

INGRESS-AUTO-LASER-SHUT

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

Logical Object: Controller OTS

The INGRESS-AUTO-LASER-SHUT alarm is raised when the ingress amplifier is off for safety Reasons.

Clear the INGRESS-AUTO-LASER-SHUT Alarm

Procedure

Step 1

For the controller OTS, check the RX-LOC or RX-LOSP alarm.

Step 2

Check if the safety conditions of the Ingress EDFA ALS are active.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

INGRESS-AUTO-POW-RED

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

Logical Object: Controller OTS

The INGRESS-AUTO-POW-RED alarm is raised when the ingress amplifier is in power reduction mode for safety reasons.

Clear the INGRESS-AUTO-POW-RED Alarm

Procedure

Step 1

For controller OTS, check if the APR configuration is active.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

Step 2

Check if the safety conditions of the Ingress EDFA for APR are active.

RAMAN-AUTO-LASER-SHUT

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

Logical Object: Controller OTS

The RAMAN-AUTO-LASER-SHUT alarm is raised when the laser inside the Raman pumps is automatically shut down if loss of signal is detected on the receiving fiber.

Clear the RAMAN-AUTO-LASER-SHUT Alarm

Procedure

Step 1

Check and clear the RX-LOC alarm by repairing any cut in fiber cable.

Step 2

Check if the safety conditions of the Raman pumps are active using the show controllers ots 0/0/0/0 raman-info.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

RAMAN-AUTO-POW-RED

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

Logical Object: Controller OTS

The RAMAN-AUTO-POW-RED alarm is raised when the Raman amplifier is in power reduction mode for safety reasons.

Clear the RAMAN-AUTO-POW-RED Alarm

Procedure

Step 1

Check if the Automatic Power Reduction (APR) and safety conditions for Raman amplifier are enabled using the show configuration commit changes all command.

Step 2

If APR is disabled, enable using the controller ots R/S/I/P raman-force-apr on command.

Step 3

If safety conditions are disabled, enable using the controller ots R/S/I/P raman-osri on command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

RAMAN-[1-5]-HIGH-PWR

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

Logical Object: Controller OTS

The RAMAN-[1-5]-HIGH-PWR alarm is raised when the Raman [1-5] pumps have high power.

Clear the RAMAN-[1-5]-HIGH-PWR Alarm

Procedure

Check the span length and configured Raman pump power for controller OTS.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

RAMAN-[1-5]-LOW-PWR

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

Logical Object: Controller OTS

The RAMAN-[1-5]-LOW-PWR alarm is raised when the raman [1-5] pumps have low power.

Clear the RAMAN-[1-5]-LOW-PWR Alarm

Procedure

Check the span length and configured Raman pump power for controller OTS.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

RX-LOC

Default Severity: Critical (CR), Service-Affecting (SA)

Logical Object: Line OTS Controller

The RX-LOC alarm is raised when there is a loss in the fiber connection continuity.

When the RX-LOC alarm is raised at the line OTS, the following alarms at the controller and port are suppressed:

Table 1. Suppressed Alarms List

Alarms

Controller

Port

RX-LOS-P

  • DFB

  • OSC

  • OTS

  • Line OTS-OCH

Line RX

TX-POWER-FAIL-LOW

  • OTS

  • OTS-OCH

LINE TX

RX-LOS-P

OTS-OCH

Line RX

Clear the RX-LOC Alarm

Procedure

Check and repair any cut in fiber cable.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

RX-LOS-P

Default Severity: Critical (CR), Service-Affecting (SA)

Logical Object: Controller DFB, Controller OSC, Controller OTS-OCH, Controller OMS, Controller OTS, or Controller OCH

The RX-LOS-P alarm is raised when:

  • there is a loss of signal payload.

  • the cable is not properly inserted or disconnected from a port.

  • port is not currently in use.

Clear the RX-LOS-P Alarm

Procedure

Step 1

Check and adjust the threshold values using the controller ots 0/0/0/0 rx-low-threshold value command.

Step 2

Check if the received power is between -1dBm to -40dBm.

Step 3

Check if the cable is properly inserted into the port.

Step 4

If the port is not in use, shutdown the port using the controller ots R/S/I/P shutdown command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

SPAN-TOO-SHORT-RX

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

Logical Object: Controller OTS

The SPAN-TOO-SHORT-RX alarm is raised when the input of the OTS span is too short.

Clear the SPAN-TOO-SHORT-RX Alarm

Procedure

Step 1

Inspect the RX fiber for any signs of damage.

Step 2

Increase the span length of the fiber using the controller ots R/S/I/P span-length length command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

SPAN-TOO-SHORT-TX

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

Logical Object: Controller OTS

The SPAN-TOO-SHORT-TX alarm is raised when the output of the OTS span is too short.

Clear the SPAN-TOO-SHORT-TX Alarm

Procedure

Step 1

Inspect the TX fiber for any signs of damage.

Step 2

Increase the span length of the fiber using the controller ots R/S/I/P span-length length command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

TD-FAILED

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

Logical Object: Controller OTS, Controller OMS, or Controller OCH

The TD-FAILED alarm is raised when the Tone Detection fails.

Clear the TD-FAILED Alarm

Procedure

Stop Tone Detection on the corresponding controller using the tone-pattern-detect controller ots R/S/I/P stop command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

TD-INPROGRESS

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

Logical Object: Controller OTS, Controller OMS, or Controller OCH

The TD-INPROGRESS alarm is raised when the Tone Detection is in progress.

Clear the TD-INPROGRESS Alarm

Procedure

This alarm is cleared automatically when Tone Detection is completed successfully.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

TD-SUCCESS

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

Logical Object: Controller OTS, Controller OMS, or Controller OCH

The TD-SUCCESS alarm is raised when Tone Detection is completed successfully.

Clear the TD-SUCCESS Alarm

Procedure

Stop Tone Detection on the corresponding controller using the tone-pattern-detect controller ots R/S/I/P stop command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

TG-INPROGRES

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

Logical Object: Controller OTS, Controller OMS, or Controller OCH

The TG-INPROGRES alarm is raised when the Tone Generation is in progress.

Clear the TG-INPROGRES Alarm

Procedure

Stop Tone Generation on the corresponding controller using the tone-pattern controller ots R/S/I/P stop command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).

TX-POWER-FAIL-LOW

Default Severity: Critical (CR), Service-Affecting (SA)

Logical Object: Controller DFB, Controller OSC, Controller OTS-OCH, Controller OMS, or Controller OCH

The TX-POWER-FAIL-LOW alarm is raised when the output of the OTS power reading is below the Fail-Low threshold.

Clear the TX-POWER-FAIL-LOW Alarm

Procedure

Step 1

Check if the threshold values are correct using the show controllers ots R/S/I/P command.

Step 2

Check if the corresponding Rx power is correct using the show controllers ots R/S/I/P command. For example, an OTS Controller 2 TX receives power from the controller 0 RX.

Step 3

Check the configured EDFA gain values using the using the show controllers ots R/S/I/P command.

Step 4

Check for any hardware failure alarms using the show alarms brief system active command.

If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/c/en/us/support/index.html for more information or call Cisco TAC (1 800 553-2447).