Skip to main content

Software Installation Troubleshooting Guide

Diagnose by anchor LED Status (2.4 s cycle)

1. anchor LED Off​

  1. Power-cycle the anchor.
  2. Verify PoE power from the switch.
  3. Check the physical network link and Ethernet cable.
  4. For cascaded deployments:
    • Verify cascade depth and total cable length.
    • Replace interconnecting cables.
    • Test with a different upstream anchor.
    • If the entire cascade fails, restart troubleshooting from Step 1.
  5. For managed switches, verify that the port has PoE enabled.

2. Blue LED Flashes Once Per Cycle​


  1. Power-cycle the anchor.
  2. If the issue persists, contact a Nooploop engineer for hardware diagnostics.

3. Blue LED Flashes Twice Per Cycle​


  1. Power-cycle the anchor.
  2. Troubleshoot IP address acquisition:
    • Check cables and physical links.
    • Test different switch ports or switches.
    • For Solution 1 deployments:
      • Verify DHCP is enabled on the server.
      • Verify the server is connected to the switch uplink port.
      • Verify the server NIC is configured with .254.
      • Check for physical VLAN isolation switches.
    • For Solution 2 deployments:
      • Verify DHCP is enabled on the router.
      • Verify router and server connections to the uplink port.
      • Disconnect the router and test using Solution 1.
      • Check for physical VLAN isolation switches.
    • For managed switches:
      • Verify VLAN permissions.
      • Verify DHCP is enabled on the VLAN interface.
      • Verify ports are configured in Access mode.
  3. Check for DHCP conflicts.
  4. Verify subnet and IP configuration consistency.
  5. Ensure the number of devices does not exceed subnet capacity.
  6. Contact Nooploop support if the issue remains unresolved.

4. Blue LED Flashes Three Times Per Cycle​


  1. Verify that the IPS Tool software is running.
  2. Power-cycle the anchor.
  3. Troubleshoot communication issues:
    • Check cables and physical links.
    • Test different switch ports or switches.
    • For Solution 2 deployments:
      • Verify the server is connected to the switch uplink port or router LAN port.
      • Disable any physical VLAN isolation switch.
      • Verify the server NIC is configured with .254 (firmware 1.5.0.0 or later).
    • For managed switches:
      • Verify that the server port and anchor ports are in the same VLAN.
  4. For cascaded deployments, test with a different upstream anchor.
  5. For direct connections, replace the anchor to rule out hardware failure.
  6. Contact a Nooploop engineer if the problem persists.