Dell Networking N4000 Series Configuration Manual page 98

Table 3-16 shows the 100/1000/10000Base-T port LED definitions.
Table 3-1. 100/1000/10000Base-T Port Definitions
LED
Link/SPD LED Off
Activity LED
(on non-PoE
switches)
Activity/PoE
LED (on PoE
switches)
Stacking Port LEDs
Table 3-2. Stacking Port LED Definitions
LED
Link LED
Activity LED
98
Hardware Overview
Color
Solid yellow
Solid green
Off
Blinking green
Off
Blinking green
Blinking yellow
Solid yellow
Color
Off
Solid green
Off
Blinking green
Definition
There is no link.
The port is operating at 10/100 Mbps.
The port is operating at 1000 Mbps.
There is no current transmit/receive activity.
The port is actively transmitting/receiving.
There is no current transmit/receive activity
and PoE power is off.
The port is actively transmitting/receiving and
PoE power is off.
The port is actively transmitting/receiving and
PoE power is on.
There is no current transmit/receive activity
and PoE power is on.
Definition
There is no link.
The port is actively transmitting/receiving.
There is no current transmit/receive activity.
The port is actively transmitting/receiving.