LED Behavior
A port LED, when there is no link on its associated port, will not be illuminated.
A port LED, when there is a 1000Mb link on its associated port, will be illuminated steady green.
A port LED, when there is a 100Mb or 10Mb link on its associated port, will alternate slowly
between green and yellow
A port LED, when illuminated, will flash when there is receive or transmit activity. The rate at
which it flashes is related to the port activity.