3Com 3C63400-3AC-C - PathBuilder S700 Switch Reference Manual page 43

Step 4: Connect I/O Cabling and Wiring 29
Figure 13 Ethernet Module Connection
Slot 1 Slot 18
LAN
Once you have connected the module, verify the front panel indicator sequence.
As shown in Figure 14, the Ethernet module has the following front panel
indicators in addition to the common system LEDs.
TX Port 1 (GREEN)—This is a transmit (to the cable) activity indicator. For each
frame sent to the cable, the LED is momentarily flashed.
RX Port 1 (GREEN)—This is a Receive (from the cable) activity indicator. For each
frame received from the cable, the LED will momentarily flash.
Link Port1 (GREEN)—This LED will illuminate when properly connected to the
Ethernet cable, otherwise it will be off.
TX Port 2 (GREEN)—This is a transmit (to the cable) activity indicator. For each
frame sent to the cable, the LED is momentarily flashed.
RX Port2 (GREEN)—This is a Receive (from the cable) activity indicator. For each
frame received from the cable, the LED will momentarily flash.
Link Port 2 (GREEN)—This LED will illuminate when properly connected to the
Ethernet cable, otherwise it will be off.
FWD (GREEN)—This is a bridging activity detector. For each frame bridged the
LED will momentarily flash.
ATM (GREEN)—This is an ATM traffic indicator. It illuminates when an ATM cell is
received or transmitted.