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Network Status: Unexpected loop detected

Phoenix Contact · FL SWITCH 7000

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The Device Level Ring (DLR) protocol has identified an unintended redundant path, forming a network loop outside of the designed ring structure. This can lead to broadcast storms, packet duplication, and severe network instability if not resolved.

Vanlige årsaker

  • Incorrect physical cabling that inadvertently creates an unauthorized loop in the network segment.
  • Misconfiguration of a device's DLR ports, causing it to bridge traffic in a way that bypasses the intended ring topology.
  • Connection of a non-DLR compliant device or a standard switch incorrectly into the DLR.

Reparasjonssteg & Sjekkliste

Klikk på steg for å spore fremgangen.

  1. 1

    Carefully review the physical network topology to identify any unintended cable connections between DLR-enabled devices or connections to external switches.

  2. 2

    Examine the DLR port configurations on all ring participants, ensuring that port roles and settings are correctly assigned and not inadvertently creating bridging loops.

  3. 3

    Disconnect any recently added network devices or cables one by one to isolate the source of the unexpected loop.

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Verifisert teknisk data. Sist oppdatert: March 2026

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Kilde: Phoenix Contact FL SWITCH 7000