Troubleshooting Interface issues
From Internet Computer Wiki
If you are seeing Interface drops/errors/flaps:
- Verify the switch port statistics:
- Access the switch interface statistics and examine the counters for drops, errors, or flapping.
- Pay close attention to any significant increases in discards, CRC errors, or port flaps.
- Try to localize affected ports (search from high increase of discards/CRC errors or port flaps):
- Identify the specific ports experiencing drops, errors, or flapping by comparing the statistics across different interfaces.
- Look for ports with a significant increase in discards, CRC errors, or frequent port flapping.
- Try to replace the cabling toward affected ports:
- Replace the network cables connected to the ports experiencing drops, errors, or flapping.
- Use high-quality, properly shielded cables to ensure a stable and reliable connection.
- Verify the NIC adapter on the server:
- Check the network interface card (NIC) on the affected server.
- Ensure that the NIC is functioning correctly.
- Consider updating the NIC firmware or replacing it if necessary.
- Check with the switch/server vendor:
- If the issue persists or if you are unable to determine the cause, contact the switch or server vendor's support team.
- Provide vendor with detailed information about the issue, including the troubleshooting steps taken and any relevant error messages or statistics.
- Seek vendor’s assistance in diagnosing and resolving the interface-related problems.
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