3Com 2426-PWR, 2226-SFP, 2250-SFP manual SFP Mode

14INTRODUCING THE BASELINE SWITCH

1000BASE-T Mode

Table 3 1000BASE-T Link/Activity Status LEDs

Link/Activity	Meaning
Green	The link is operating at 1000 Mbps.
Yellow	The link is operating at 10 or 100 Mbps.
Flashing Green	Packets are being received or
	transmitted on the port at 1000 Mbps.
Flashing Yellow	Packets are being received or
	transmitted on the port at 10 or 100
	Mbps.
Off	The link has not been established,
	nothing is connected to the port, or
	there is a problem:
	■	Check that the attached device is
		powered on.
	■	Check that the cable is the correct
		type, is not faulty, and is inserted
		correctly.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.

Table 4 1000BASE-T SFP/Duplex Status LEDs

SFP/Duplex	Meaning
Yellow	The link is operating at full duplex.
Off	The link is operating at half duplex, or
	no link is established.

1000BASE-T only operates in full-duplex mode. 10/100BASE-TX can operate in half- or full-duplex mode.

SFP Mode

Table 5 SFP Link/Activity Status LEDs

Link/Activity	Meaning
Green	The link is operating at 1000 Mbps.
Flashing Green	Packets are being received or
	transmitted on the port at 1000 Mbps.
Off	The link has not been established; Either
	nothing is connected to the port, or
	there is a problem:
	■	Check that the attached device is
		powered on.
	■ Check that the SFP module is inserted
		correctly.
	■	Check that the fiber cable is the
		correct type, is not faulty, and is
		inserted correctly.
	■	Ensure that the transmit (TX) and
		receive (RX) fiber cables are not
		swapped. TX on the remote device

must be connected to RX on the local device; likewise, RX on the remote device must be connected to TX on the local device.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.