Dell Networking N4000 Series Configuration Manual page 110

Table 3-16 shows the 100/1000/10000Base-T port LED definitions.
Table 3-7. 100/1000/10000Base-T Port Definitions
LED
Link/SPD LED Off
Activity LED
(on non-PoE
switches)
Activity/PoE
LED (on PoE
switches)
Module Bay LEDs
The following tables describe the purpose of each of the module bay LEDs
when SFP+ and 10GBaseT modules are used.
Table 3-8. SFP+ Module LED Definitions
LED
Link/SPD LED Off
Activity LED
110
Hardware Overview
Color
Solid yellow
Solid green
Off
Blinking green
Off
Blinking green
Blinking yellow
Solid yellow
Color
Solid green
Solid amber
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 operating at 10 Gbps.
The port is operating at 1000 Mbps.
There is no current transmit/receive activity.
The port is actively transmitting/receiving.