3Com 2848 SFP User Guide - Page 10

(4) Module Active LEDs, (5) SFP Port Status LEDs, (6) Power LED, Status, Meaning - baseline

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10 INTRODUCING THE BASELINE SWITCH Flashing Packets are being received or transmitted on the Green port at 1000 Mbps. Flashing Packets are being received or transmitted on the Yellow port at 10 or 100 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 cable or fiber is the correct type and is not faulty. ■ For fiber connections, ensure that the receive (RX) and transmit (TX) cable connectors are not swapped. 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. (4) Module Active LEDs The Module Active LEDs show the status of the SFP ports. Status Meaning Green Module present. Off No module present. (5) SFP Port Status LEDs The SFP Port Status LEDs show the transmit and receive activity of the SFP ports. Status Meaning Flashing Packets are being received or transmitted on the Green port at 1000 Mbps. Off No link. (6) Power LED The Power LED shows the power status of the Switch. Status Meaning Green The unit is powered on and ready for use. Flashing POST test in progress. Green Yellow Internal power, POST, or loopback test has failed. Switch is in fail-safe mode. Off The unit is not receiving power. ■ Check that the power cord is connected correctly. ■ If the unit still does not operate, contact your supplier.

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10
I
NTRODUCING
THE
B
ASELINE
S
WITCH
(4) Module Active LEDs
The Module Active LEDs show the status of the SFP
ports.
(5) SFP Port Status LEDs
The SFP Port Status LEDs show the transmit and receive
activity of the SFP ports.
(6) Power LED
The Power LED shows the power status of the Switch.
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, either nothing
is connected to the port, or there is a problem:
■
Check that the attached device is powered
on.
■
Check that the cable or fiber is the correct
type and is not faulty.
■
For fiber connections, ensure that the receive
(RX) and transmit (TX) cable connectors are
not swapped.
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.
Status
Meaning
Green
Module present.
Off
No module present.
Status
Meaning
Flashing
Green
Packets are being received or transmitted on the
port at 1000 Mbps.
Off
No link.
Status
Meaning
Green
The unit is powered on and ready for use.
Flashing
Green
POST test in progress.
Yellow
Internal power, POST, or loopback test has
failed. Switch is in fail-safe mode.
Off
The unit is not receiving power.
■
Check that the power cord is connected cor-
rectly.
■
If the unit still does not operate, contact your
supplier.