Foundry Networks FGS648P-POE, FGS624P Observing LEDs, Network Connection-Related LED States

Connecting Network Devices and Checking Connectivity

Observing LEDs

After you install the network cables, you can observe certain LEDs to determine if the network connections are functioning properly. Table 4.2 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.

Table 4.2: Network Connection-Related LED States

LED	Desired	Meaning	Abnormal	Meaning/Action
	State		State
Link (Lnk)	On	A link is established	Off	A link is not established with the remote port.
	(Green)	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
					Foundry device is connected to the
					receive port on the other network device,
					and that the receive port on the Foundry
					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, see “Cleaning the Fiber-Optic
					Connectors” on page 4-6.
				•	If the other actions don’t resolve the
					problem, try using a different port or a
					different cable.
Active (Act)	On or	The port is	Off for an	The port is not transmitting or receiving user
	blinking	transmitting and	extended	packets. You can do the following:
	(Yellow)	receiving user	period.	•	Check the Link LED to make sure the link
		packets.
					is still established with the remote port. If
					not, take the actions described in the
					Meaning/Action column for the Link LED.
				•	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
					IronView Network Manager.

If a problem persists after taking these actions, contact Foundry’s technical support.

September 2007 © 2007 Foundry Networks, Inc. 4 - 7