EX4100 and EX4100-F Chassis

Chassis Status LEDs on EX4100 and EX4100-F Switches

EX4100 and EX4100-F switches have four chassis status LEDs (labeled SYS, ALM, MST, and CLD) on the rightside of the front panel .

Figure 1: Chassis Status LEDs in EX4100 and EX4100-F Switches

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Chassis status LEDs

Table 1 describes the chassis status LEDs labeled SYS, ALM, and MST on an EX4100 and EX4100-F switch. The table also describes their colors and states and the status each LED indicates. You can view the colors of the LEDs remotely through the CLI by issuing the show chassis led operational mode command. All LEDs can be lit simultaneously.

Table 1: SYS, ALM, and MST Chassis Status LEDs on EX4100 and EX4100-F Switches
LED Label	Color	State and Description
SYS	Green	On steadily—Junos OS for EX Series switches is loaded on the switch. Blinking—The switch is booting.
SYS	Unlit	The switch is powered off or is halted.
ALM	Red	A major hardware fault—such as a temperature alarm or a power failure alarm—occurred, and the switch is halted. A major alarm indicates a critical error condition that requires immediate attention (see Chassis Component Alarm Conditions on EX4100 and EX4100-F Switches).
	Amber	A minor alarm—such as a software or a hardware error—occurred. Power off the switch and then power it back on. Monitor the switch to see whether it is working properly. A minor alarm indicates a non-critical condition that requires monitoring or maintenance. A minor alarm that is left unchecked might cause interruption in service or performance degradation.
	Unlit	No alarm is in effect, or the switch is halted.
MST	Green	In a standalone switch: On steadily—The switch is functioning normally. Off—The switch is powered off or is halted.
MST	Green	In a Virtual Chassis configuration: On steadily—The switch is the primary switch in the Virtual Chassis configuration. Blinking—The switch is the backup switch in the Virtual Chassis configuration. Off—The switch is a linecard member in the Virtual Chassis configuration, or the switch is halted.

Table 2 describes the cloud LED (labeled CLD) on an EX4100 and EX4100-F switch. The table also describes the colors on the switch and the status that the colors indicate. Cloud LED blinking patterns identify the cloud connection status of the switch. There is a distinct pause between blinking patterns to distinguish them. For example, a green color blink of the cloud LED followed immediately by a yellow color blink, followed by a distinct pause, and then the pattern repeating, signifies that the switch is connecting to the cloud.

Table 2: Cloud LED on EX4100 and EX4100-F Switches
Colors	Status
	The switch is connecting to the cloud.
	The DHCP server has not allotted an IP address to the switch, or no IP address is configured on the switch.
	The DHCP server has not allotted a gateway IP address to the switch, or no gateway IP address is configured on the switch.
	The gateway IP address is not reachable.
	The switch cannot find a DNS server.
	The DNS server does not respond.
	The response from the DNS server is blank.
	The connection to the phone-home server (PHS) or the network management server is not active or timed out.
	The PHS is active, but it does not respond.
	The switch is unable to connect to the cloud because it is unable to authenticate the certificate from the cloud.
	The switch is unable to connect to the cloud because the cloud authentication certificate is invalid.
	The switch information is not added to the PHS.
	The switch is unable to fetch the configuration file from the cloud.
	The switch is unable to apply the configuration file fetched from the cloud.
	The switch is unable to save the boot configuration file.
	Junos OS is being upgraded on the switch.
	Junos OS is upgraded successfully on the switch.
	Upgrade of Junos OS on the switch failed.

Note:

For Virtual Chassis deployments managed from the cloud, the CLD LED on individual Virtual Chassis members will reflect the state of the Master, except when a software download is in progress. When a software download is in progress, the CLD LED on a Virtual Chassis member will display the Junos OS upgrading LED pattern and color.

LEDs on the Management Port on EX4100 and EX4100-F Switches

The management port, labeled MGMT, on the rear panel of EX4100 and EX4100-F switches has two LEDs that indicate link activity and port status (see Figure 2).

Figure 2: LEDs on the Management Port on EX4100 and EX4100-F Switches

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Link activity LED

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Status LED

Figure 3: LEDs on the Management Port on the EX4100-F-12P and EX4100-F-12T Switches

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Link activity LED

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Status LED

Table 3 describes the LEDs.

Table 3: LEDs on the Management Port on EX4100 and EX4100-F Switches
LED	Color	State and Description
Link activity	Green	On steadily—The port and the link are active, but no link activity is occurring. Blinking—The port and the link are active, and link activity is occurring. Off—The port is not active.
Status	Green	Indicates the speed: On steadily—Link speed is 1000 Mbps or 100 Mpbs. Off—Link speed is 10 Mbps.

LEDs on the RJ-45 Network Ports, Virtual Chassis Ports, and Uplink Ports on EX4100 and EX4100-F Switches

The RJ-45 network ports, SFP+ uplink ports, and SFP+/SFP28 Virtual Chassis Ports on EX4100 and EX4100-F switches have LEDs that show the link activity and port status.

LEDs on the Network Ports

The figures in this section show and describe the LEDs on the following ports:

Figure 4 shows the LEDs on the RJ-45 network ports on EX4100 and EX4100-F switches.
Figure 5 and Figure 6 show the LEDs on the SFP+ uplink ports and LEDs on the multigigabit BASE-T RJ-45 uplink ports on the EX4100-F-12P and EX4100-F-12T Switches.
Figure 7 and Figure 8 shows the LEDs on the SFP+/SFP28 Virtual Chassis Ports and LEDs on the SFP+ Virtual Chassis ports on EX4100-F-12P and EX4100-F-12T Switches.
Table 4 describes the link activity LED state and description on the RJ-45 ports, SFP+ uplink ports/multigigabit BASE-T RJ-45 uplink ports, and SFP+/SFP28 Virtual Chassis Ports.

Figure 4: LEDs on the RJ-45 Network Ports on EX4100 and EX4100-F Switches

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Link activity LED

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Status LED

Figure 5: LEDs on the SFP+ uplink ports on EX4100 and EX4100-F Switches

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Link activity LED

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Status LED

Figure 6: LEDs on the multigigabit BASE-T RJ-45 uplink ports on the EX4100-F-12P and EX4100-F-12T Switches

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Link activity LED

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Status LED

Figure 7: LEDs on the SFP+/SFP28 Virtual Chassis ports on EX4100 and EX4100-F Switches

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Link activity LED

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Status LED

Figure 8: LEDs on the SFP+ Virtual Chassis ports on EX4100-F-12P and EX4100-F-12T Switches

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Link activity LED

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Status LED

Table 4: Link Activity LED on the Network Ports, Uplink Ports, and Virtual Chassis Ports
Link Activity LED Color	Link Status LED State and Description
Green	On steadily—The port and the link are active, but no link activity is occurring. Blinking—The port and the link are active, and link activity is occurring. Off—The port is not active.

EX4100 and EX4100-F switches have network port mode LEDs (labeled SPD, DX, EN, and POE) on the right side of the front panel (see Figure 9). These LEDs indicate the status of the network ports. Use the mode button on the right side of the front panel to toggle the status LEDs. You toggle the status LEDs to show the different port parameters for the network ports. The LED that is lit indicates the port parameter. Table 5 describes the status LEDs.

Note:

The LED labeled PoE is not available on switch models with network ports that do not provide PoE.

Figure 9: Port Mode LEDs on EX4100 and EX4100-F Switches

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Port Mode LEDs

Table 5: Port Status of Network Ports Based on States of Port Mode LEDs
LED	Color	State and Description
SPD	Green	Indicates the speed. The speed indicators are as follows: On steadily—1000 Mbps On steadily (for EX4100 and EX4100-F uplink and virtual chassis ports)—10 Gbps Blinking—100 Mbps Blinking; 1 blink per second (for EX4100 and EX4100-F uplink and virtual chassis ports)—1000 Mbps Blinking; 3 blinks per second (for EX4100 and EX4100-F uplink and virtual chassis ports)—25 Gbps Unlit—10 Mbps
	Amber	On steadily - 2.5 Gbps (supported only on EX4100-24MP and EX4100-48MP) Blinking - 5 Gbps (supported only on EX4100-24MP)
	Blue	On steadily - 10 Gbps (supported only on EX4100-24MP)
DX	Green	Indicates the duplex mode. The status indicators are as follows: On steadily—The port is set to full-duplex mode. Unlit—The port is set to half-duplex mode.
EN	Green	Indicates the administrative status. The status indicators are as follows: On steadily—The port is administratively enabled. Unlit—The port is administratively disabled.
POE	Green	Indicates the PoE mode. The status indicators are as follows: On steadily—PoE is enabled on the port, and a device is drawing power. Blinking—PoE is enabled on the port, but nothing is drawing power from the port. Unlit—PoE is not enabled on the port.

ON THIS PAGE

EX4100 and EX4100-F Chassis

Chassis Status LEDs on EX4100 and EX4100-F Switches

LEDs on the Management Port on EX4100 and EX4100-F Switches

LEDs on the RJ-45 Network Ports, Virtual Chassis Ports, and Uplink Ports on EX4100 and EX4100-F Switches

LEDs on the Network Ports