EX4300 Chassis

The LCD panel on the front panel of the EX4300 switch shows two lines of text, each with a maximum of 16 characters. The LCD panel displays a variety of information about the switch and also provides a menu to perform basic operations such as initial setup and reboot.

There are two navigation buttons—Menu and Enter—to the right of the LCD panel.

See Figure 1.

Figure 1: LCD Panel in EX4300 Switches

1 — LCD panel	3 — LCD panel Menu button
2 — LCD panel Enter button	4 — Chassis status LEDs

The first line of text on the LCD panel displays basic information about the switch and the second line of text displays information about the mode selected on the LCD panel. You can configure the second line of the text for the LCD panel to display a custom message. If the LCD panel is configured to display a custom message, the Menu button and the Enter button are disabled. See Configuring the LCD Panel on EX Series Switches (CLI Procedure).

The LCD panel has a backlight. If the LCD panel is idle for 60 seconds, the backlight turns off. You can turn on the backlight by pressing the Menu or Enter button once. After turning on the backlight, you can toggle between the LCD panel menus by pressing the Menu button and navigate through the menu options by pressing the Enter button.

This topic describes:

• LCD Panel Modes
• LCD Panel Menus

EX4300 switches provide a slot to install an optional uplink module. Uplink modules are hot-insertable and hot-removable field-replaceable units (FRUs).

You can install an uplink module horizontally in the uplink module slot on the front panel of the switch. By installing an uplink module, you add more ports to your switch, thereby increasing the port density of the switch.

Table 2 shows the uplink modules supported on 24-port and 48-port EX4300 switches except EX4300-48MP and EX4300-48MP-S switches, their descriptions, and the Junos OS release in which the models were released. Table 3 shows the uplink modules supported on 32-port EX4300 switches, their descriptions, and the Junos OS release in which the models were released. Table 4 shows the uplink modules supported on EX4300-48MP and EX4300-48MP-S switches, their descriptions, and the Junos OS release in which the models were released.

Table 5 shows the uplink modules used in 24-port and 48-port EX4300 switches except EX4300-48MP and EX4300-48MP-S switches. Table 6 shows the uplink modules used in 32-port EX4300 switches. Table 7 shows the uplink modules used in EX4300-48MP and EX4300-48MP-S switches.

Table 5: Uplink Modules Used in 24-Port and 48-Port EX4300 Switches Except EX4300-48MP and EX4300-48MP-S Switches

Uplink Module Name	Model Number	Figure
4-port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ uplink module	EX-UM-4X4SFP	Figure 2: 4-Port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ Uplink Module Figure 3: LEDs on the 4-Port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ Uplink Module Link activity LED of the uplink module port Status LED of the uplink module port Captive screws of the uplink module Handle of the uplink module

Table 6: Uplink Modules Used in 32-Port EX4300 Switches

Uplink Module Name	Model Number	Figure
2-port 40-Gigabit Ethernet QSFP+ uplink module	EX-UM-2QSFP	Figure 4: 2-Port 40-Gigabit Ethernet QSFP+ Uplink Module Figure 5: LEDs on the 2-Port 40-Gigabit Ethernet QSFP+ Uplink Module Status LED of the uplink module Link activity LED of the uplink module port Status LED of the uplink module port
8-port 10-Gigabit Ethernet SFP+ uplink module	EX-UM-8X8SFP	Figure 6: 8-Port 10-Gigabit Ethernet SFP+ Uplink Module Figure 7: LEDs on the 8-Port 10-Gigabit Ethernet SFP+ Uplink Module Status LED of the uplink module Link activity LED of the lower port Link activity LED of the upper port Status LED the lower port Status LED the upper port

Table 7: Uplink Modules Used in EX4300-48MP and EX4300-48MP-S Switches

Uplink Module Name	Model Number	Figure
2-port 40-Gigabit Ethernet QSFP+/100-Gigabit Ethernet QSFP28	EX-UM-2QSFP-MR	Figure 8: 2-Port 40-Gigabit Ethernet QSFP+/100-Gigabit Ethernet QSFP28 Uplink Module Figure 9: LEDs on the 2-Port 40-Gigabit Ethernet QSFP+/100-Gigabit Ethernet QSFP28 Uplink Module   1 — Captive screws of the uplink module   4 — Link activity LED of the uplink module port   2 — Link activity LED of the uplink module port   5 — Link activity LED of the uplink module port   3 — Link activity LED of the uplink module port   6 — Handle of the uplink module
4-port 1-Gigabit Ethernet SFP/10-Gigabit Ethernet SFP+ uplink module	EX-UM-4SFPP-MR	Figure 10: LEDs on the 4-Port 1-Gigabit Ethernet SFP/10-Gigabit Ethernet SFP+ Uplink Module Captive screws of the uplink module Link activity LED of the uplink module port Status LED of the uplink module port Handle of the uplink module

The SFP+ uplink module ports in EX4300 switches can operate either in 10-gigabit or in 1-gigabit mode depending on the transceiver you install in them. The operating mode for an SFP+ uplink module is shown in the output of the show chassis pic fpc-slot slot number pic-slot slot number command.

Each port on the uplink modules has a pair of LEDs that indicate the link activity and status of the port. See Network Port, Built-In QSFP+ Port, Uplink Port, and Uplink Module Port LEDs on EX4300 Switches for details about the status and link activity LEDs.

SFP+ uplink modules are shipped with dust covers installed in the ports. QSFP+ uplink module is shipped with a dust cover installed in one of the ports.

EX4300 switches except EX4300-48MP and EX4300-48MP-S switches have three chassis status LEDs (labeled ALM, SYS, and MST) on the right of the LCD panel, next to the Menu and Enter buttons (see Figure 11). EX4300-48MP and EX4300-48MP-S switches have three chassis status LEDs (labeled ALM, SYS, and MST) on the right of the front panel (see Figure 12).

Figure 11: Chassis Status LEDs in EX4300 Switches Except EX4300-48MP and EX4300-48MP-S Switches

1 — LCD panel	3 — LCD panel Menu button
2 — LCD panel Enter button	4 — Chassis status LEDs

Figure 12: Chassis Status LEDs in EX4300-48MP and EX4300-48MP-S Switches

1 — Chassis status LEDs

Table 8 describes the chassis status LEDs on an EX4300 switch, their colors and states, and the status they indicate. You can view the colors of the three LEDs remotely through the CLI by issuing the operational mode command show chassis led.

A major alarm (red) indicates a critical error condition that requires immediate action.

A minor alarm (yellow or 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.

All three LEDs can be lit simultaneously.

The management port, labeled MGMT, on the rear panel of an EX4300 switch, has two LEDs that indicate link activity and status of the management port. Figure 13 shows the location of Management port on a 24-port EX4300 switch. The location of the LEDs and their behavior are similar for all EX4300 switches except EX4300-48MP and EX4300-48MP-S switches. Figure 14 shows the location of Management port on EX4300-48MP and EX4300-48MP-S Switches.

Figure 13: LEDs on the Management Port on a 24-Port EX4300 Switch

1 — Link/Activity LED

2 — Status LED

Figure 14: LEDs on the Management Port on EX4300-48MP and EX4300-48MP-S Switches

1 — Link/Activity LED

2 — Status LED

Table 9 describes the Link/Activity LED.

Table 10 describes the Status LED.

Each 10/100/1000BASE-T network port, SFP network port, SFP+ uplink port, SFP+ uplink module port, built-in QSFP+ port, and QSFP+ uplink module port on an EX4300 switch has two LEDs that show the link activity and status of the port.

The following figures in this topic shows the location of those LEDs:

• Figure 15 shows the LEDs on the 10/100/1000BASE-T and 100/1000/2500/5000/10000BASE-T Ethernet network ports.

• Figure 16 shows the LEDs on the SFP network ports on EX4300-32F switches.

• Figure 17 shows the LEDs on the built-in QSFP+ ports.

• Figure 18 shows the LEDs on the SFP+ uplink ports and on the uplink module ports on the 4-port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ uplink module for EX4300 switches except EX4300-48MP and EX4300-48MP-S switches.

• Figure 19 shows the LEDs on the ports on the 2-port 40-Gigabit Ethernet QSFP+ uplink module for EX4300-32F switches.

• Figure 20 shows the LEDs on the ports on the 8-port 10-Gigabit Ethernet SFP+ uplink module for EX4300-32F switches.

• Figure 21 shows the LEDs on the ports on the 2-port 40-Gigabit Ethernet QSFP+/100-Gigabit Ethernet QSFP28 uplink module for EX4300-48MP and EX4300-48MP-S switches.

• Figure 22 shows the LEDs on the ports on the 4-port 1-Gigabit Ethernet SFP/10-Gigabit Ethernet SFP+ uplink module for EX4300-48MP and EX4300-48MP-S switches.

Figure 15: LEDs on 10/100/1000BASE-T Network Ports and 100/1000/2500/5000/10000BASE-T Ethernet Network Ports

Figure 16: LEDs on the SFP Network Ports on EX4300-32F Switches

Figure 17: LEDs on the Built-In QSFP+ Ports

1 — Link activity LED

2 — Status LED

Figure 18: LEDs on the SFP+ Uplink Ports and on the 4-Port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ Uplink Module for EX4300 Switches Except EX4300-48MP and EX4300-48MP-S Switches

1 — Link activity LED

2 — Status LED

Figure 19: LEDs on the on the Ports on the 2-Port 40-Gigabit Ethernet QSFP+ Uplink Module for EX4300-32F Switches

1 — Status LED of the uplink module	3 — Status LED of the uplink module port
2 — Link activity LED of the uplink module port

Figure 20: LEDs on the 8-Port 10-Gigabit Ethernet SFP+ Uplink Module for EX4300-32F Switches

1 — Status LED of the uplink module	4 — Status LED the lower port
2 — Link activity LED of the lower port	5 — Status LED the upper port
3 — Link activity LED of the upper port

Figure 21: LEDs on the Ports on the 2-Port 40-Gigabit Ethernet QSFP+/100-Gigabit Ethernet QSFP28 Uplink Module for EX4300-48MP and EX4300-48MP-S Switches

1 — Captive screws of the uplink module	4 — Link activity LED of the uplink module port
2 — Link activity LED of the uplink module port	5 — Link activity LED of the uplink module port
3 — Link activity LED of the uplink module port	6 — Handle of the uplink module

There are four LEDs for each port (labeled 2, 3, 4, and 5 in Figure 21). If a port is configured to operate at 10-Gbps speed by using breakout cables, four 10-Gbps interfaces are created and the four LEDs for that port becomes operational. Each of these LEDs indicates the link activity on the corresponding interface. If a port is configured to operate at 40-Gbps or 100-Gbps speed, the LED labeled 2 for that port in Figure 21 becomes operational and indicates the link activity on the corresponding port.

Figure 22: LEDs on the Ports on the 4-Port 1-Gigabit Ethernet SFP/10-Gigabit Ethernet SFP+ Uplink Module for EX4300-48MP and EX4300-48MP-S Switches

1 — Captive screws of the uplink module	3 — Status LED of the uplink module port
2 — Link activity LED of the uplink module port	4 — Handle of the uplink module

The Table 11 describes the link activity LED on 10/100/1000BASE-T network ports, SFP network ports, SFP+ uplink ports, SFP+ uplink module ports, built-in QSFP+ ports, QSFP+ uplink module ports, and QSFP+/QSFP28 uplink module ports.

On EX4300 switches except EX4300-48MP and EX4300-48MP-S switches, from the Idle menu of the LCD panel, use the Enter button on the LCD panel to toggle between the ADM, DPX, SPD, and PoE+ indicators.

Table 12 describes the Status LED on 10/100/1000BASE-T Ethernet network ports and SFP network ports on EX4300 switches except EX4300-48MP and EX4300-48MP-S switches.

Table 14 describes the Status LED on QSFP+ ports and QSFP+ uplink module ports in EX4300 switches.

Table 15 describes the Status LED on 100/1000/2500/5000/10000BASE-T Ethernet network ports on EX4300-48MP and EX4300-48MP-S switches. Use the Factory Reset/Mode button on the far right side of the front panel to toggle the Status LED to show the different port parameters for the network ports. You can tell which port parameter is indicated by the Status LED by looking at which port status mode LED (SPD, DX, EN, and PoE) is lit.

Starting in Junos OS Release 20.1R1, you can use the request chassis beacon command on EX4300-48MP switches to identify the switch or a port on the switch. When you execute the command, the status LEDs on the RJ-45 network ports blink two times per second irrespective of the mode the ports are operating in (see How to Locate a Device or Port Using the Chassis Beacon).

Table 16 describes the Status LED on the ports on the 4-port 1-Gigabit Ethernet SFP/10-Gigabit Ethernet SFP+ uplink module for EX4300-48MP and EX4300-48MP-S switches.