Juniper Networks EX4200 - Manual (Page 48)

Table 7: Link/Activity LED on Network Ports in EX3200 and EX4200 Switches
State and Description Color LED
■ Blinking—The port and the link are active, and there is
link activity.
■ On steadily—The port and the link are active, but there
is no link activity.
■ Off—The port is not active.
Green Link/Activity
Table 8 on page 23 describes the Status LED. From the Idle menu of the LCD, use
the
Enter button on the LCD panel to toggle between the ADM, DPX, POE, and SPD
indicators.
22 ■ Network Port LEDs in EX3200 and EX4200 Switches
Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches