Observing LEDs

After you install the network cables, you can observe certain LEDs to determine if the network connections are functioning properly. The following table outlines the LEDs related to the network connections, the desired state of each LED, possible abnormal states of each LED, and what to do if an LED indicates an abnormal state.

Network connection-related LED states

LED

Desired state

Meaning

Abnormal state

Meaning or action

Ethernet (1-24/48)

On or flashing (Green)

The port has established a valid link at 10, 100, or 1000 Mbps. Flashing indicates the port is transmitting and receiving user packets.

Off

A link is not established with the remote port. You can do the following:

  • Verify that the connection to the other network device has been properly made. Also, make certain that the other network device is powered on and operating correctly.
  • Verify that the port has not been disabled through a configuration change. You can use the CLI. If you have configured an IP address on the device, you also can use the Web management interface or Brocade Network Advisor.
  • If the other actions do not resolve the problem, try using a different port or a different cable.

PoE

(1-24/48)

On (Green)

The port is providing PoE power to a connected device.

Off

A link is not established with the PoE device. You can do the following:

  • Verify that the connection to the other network device has been properly made.
  • If the other actions do not resolve the problem, try using a different port or a different cable.

SFP (X1 - X4) for ICX 7250-24G devices

SFP+ (X1 - X8) for all other ICX 7250 devices

On or flashing (Green or Yellow)

Flashing yellow indicates the port is transmitting and receiving user packets at 1 Gbps.

The SFP+ port is operating at 10 Gbps. Flashing green indicates the port is transmitting and receiving user packets at 10 Gbps.

Off

A link is not established with the remote port. You can do the following:

  • Verify that the connection to the other network device has been properly made. Also, make certain that the other network device is powered on and operating correctly.
  • Verify that the transmit port on the device is connected to the receive port on the other network device, and that the receive port on the device is connected to the transmit port on the other network device. If you are not certain, remove the two cable connectors from the port connector and reinsert them in the port connector, reversing their order.
  • Dust may have accumulated in the cable connector or port connector. For information about cleaning the connectors, refer to Cleaning the fiber-optic connectors.
  • Verify that the port has not been disabled through a configuration change.
  • Ensure that the SFP+ transceivers in both ends are of the same optic type (for example, SR, LR, LRM).
  • If the other actions do not resolve the problem, try using a different port or a different cable.

If a problem persists after taking these actions, contact RUCKUS Technical Support.

Parent topic: Testing connectivity