Management Port Leds In Ex4200 Switches - Juniper EX4200 Hardware Manual

Table 6: Chassis Status LEDs in an EX4200 Switch (continued)
LED Label
MST (Primary)
A major alarm (red) indicates a critical error condition that requires immediate action.
A minor alarm (amber) indicates a noncritical condition that requires monitoring or maintenance. A minor
alarm that is left unchecked might cause interruption in service or performance degradation.
NOTE: The amber glow of the Alarm LED that indicates a minor alarm closely resembles the red
glow that indicates a major alarm.
All three LEDs can be lit simultaneously.

Management Port LEDs in EX4200 Switches

The management port on EX4200 switches has two LEDs that indicate link/activity and port status (see
Figure 10 on page 40). The management port is set to full-duplex and the speed is set to 100 Mbps.
Color
Green
State and Description
In a standalone EX4200 switch:
On steadily—The switch is functioning normally.
Off—The switch is powered off or is halted.
In a Virtual chassis configuration:
On steadily—The switch is the primary in the Virtual
Chassis configuration.
Blinking—The switch is the backup in the Virtual Chassis
configuration.
Off—The switch is a linecard member in the Virtual
Chassis configuration or is halted.
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