Troubleshooting Guide for Cisco NCS 1010

Troubleshooting Guide Overview

This guide provides detailed procedures for identifying and resolving common alarms and network failures encountered when operating the Cisco NCS 1010 chassis. It is divided into sections covering infrastructure, data path, and optical application alarms, as well as general network troubleshooting.

Infrastructure Alarms

Infrastructure alarms typically relate to hardware health, power, and system initialization. Common alarms include:

• LICENSE-COMM-FAIL: Indicates inability to communicate with the Cisco license cloud server. Restore connectivity to clear.
• FAN FAIL / FAN SPEED SENSOR: Indicates fan tray issues. Replace faulty fans or fan trays.
• EQUIPMENT_FAILURE: Raised when components like optical modules, line cards, or FPGAs fail. Collect logs using show tech-support and verify ambient temperature and power supply.
• [Low | High] Voltage: Indicates power source issues. Verify voltage levels; alarms clear automatically when within operating range.

Data Path Alarms

Data path alarms often relate to signal integrity and amplifier performance. Key procedures include:

• CHANNEL-NOISE-LOADED: Clears automatically when the original traffic channel is restored.
• EGRESS/INGRESS-AMPLI-GAIN-HIGH/LOW: Adjust gain settings using controller ots egress-ampli-gain or ingress-ampli-gain commands.
• RX-LOS-P: Indicates loss of signal payload. Check fiber connections, ensure cables are properly inserted, or adjust threshold settings.

Optical Application Alarms

These alarms relate to optical performance and topology discovery:

• APC-BLOCKED-RX/TX: Indicates the Automatic Power Control (APC) domain is down. Resolve fiber cuts or network events to clear.
• OTDR-ABS-ATTENUATION-EXCEEDED: Indicates attenuation events exceeding thresholds. Check fiber scan results.
• RAMAN-TUNE-FAILED: Often caused by high back reflection. Clean fiber and ports to resolve.

General Troubleshooting

This section covers complex network failures:

• L/C Band Failures: Use show olc band-status and show olc apc to identify connectivity issues between manager and agent nodes.
• Span Failures: Often indicated by Loss of Signal or Loss of Continuity alarms. Inspect fiber for damage and verify span length configurations.
• Client-Side Failures: Typically caused by fiber cuts. Check for LOS-P alarms at the AD port controller.
• Connection Verification Failures: Errors like Tone Generation Already In Progress or Invalid Pattern occur during configuration. Ensure correct tone-pattern and frequency values are set.