Article · Wikipedia archive · Last revised Jul 2, 2026

Link flap

Link flap is a condition where a communications link alternates between up and down states. Link flap can be caused by end station reboots, power-saving features, incorrect duplex configuration or marginal connections, and signal integrity issues on the link.

Last revised
Jul 2, 2026
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≈ 1 min
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Wikipedia ↗

Link flap is a condition where a communications link alternates between up and down states.1 Link flap can be caused by end station reboots, power-saving features, incorrect duplex configuration or marginal connections, and signal integrity issues on the link.2

References

References

  1. "What is the Link-flap error in Cisco Switches?". Archived from the original on 2012-10-18. Retrieved 2012-12-02.
  2. "How to Troubleshoot I/O Port Flapping". Archived from the original on 2018-11-10. Retrieved 2012-12-02.