Dell PowerEdge C8000 - Manual (Page 21)

About the System 21
Figure 1-7. NIC Indicators (BMC management port)
1 link indicator 2 activity indicator
Indicator Status Indicator Code
Link indicator Blinking amber Linking at 10 Mbps port speed
Blinking green Linking at 100 Mbps port speed (maximum)
Activity
indicator
Solid green No activity
Blinking green Transmit or receive activity
Off Idle