1

Network Status: Ring fault

Phoenix Contact · FL SWITCH 7000

What does 1 mean?

The Device Level Ring (DLR) protocol has detected a fault, indicating a break in the ring topology. This condition compromises network redundancy and may lead to interrupted network traffic or communication failures within the ring.

Common Causes

  • Physical cable break in one of the DLR ports of a device.
  • Failure of a device integrated into the DLR, causing a disruption in the ring path.
  • Misconfiguration of a DLR port that prevents proper ring closure or communication.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Access the "DLR Status Information" web page (Figure 4-34) and click the "Verify Fault Location" button to identify the IP addresses of "Last Node Port 1" and "Last Node Port 2" where the error is detected.

  2. 2

    Physically inspect the cabling and connections at the devices identified by "Last Node Port 1" and "Last Node Port 2" for any signs of damage, disconnections, or loose contacts.

  3. 3

    Check the operational status and diagnostic logs of the devices connected at the identified fault locations for internal errors or power issues.

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Verified technical data. Last updated: March 2026

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Source: Phoenix Contact FL SWITCH 7000