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EX4200 Chassis

Front Panel of an EX4200 Switch

The front panel of an EX4200 switch consists of the following components:

  • Network ports—depending on the switch model, either:

    • 10/100/1000Base-T Gigabit Ethernet ports, some or all of which are enabled for Power over Ethernet (PoE)

    • 100Base-FX/1000Base-X SFP ports for use with fiber-optic connections

  • Uplink module ports—SFP, SFP+, or XFP ports (Installing the uplink module is an optional.)

  • LCD panel and the LCD navigation buttons

  • Chassis status LEDs

  • Network port LEDs

Figure 1 shows the front panel of an EX4200 switch with 48 Gigabit Ethernet ports. Figure 2 shows the front panel of an EX4200 switch with 24 Gigabit Ethernet ports. Figure 3 shows the front panel of an EX4200-24F switch with 24 SFP ports for use with fiber-optic connectors.

Figure 1: EX4200 Switch with 48 Gigabit Ethernet PortsEX4200 Switch with 48 Gigabit Ethernet Ports
Figure 2: EX4200 Switch with 24 Gigabit Ethernet PortsEX4200 Switch with 24 Gigabit Ethernet Ports
Figure 3: EX4200-24F Switch with 24 SFP PortsEX4200-24F Switch with 24 SFP Ports

Rear Panel of an EX4200 Switch

The rear panel of the EX4200 switch accomdates the following components:

  • Fan tray

  • Virtual Chassis ports (VCPs)

  • USB port

  • Temperature shutdown LED

  • Management Ethernet port

  • Console port

  • ESD point

  • Power supply or power supplies

Figure 4 shows the rear panel of an EX4200 switch with power supplies and fan tray installed. The rear panel of all the EX4200 switches except EX4200-24F-S and EX4200-48T-S switches are similar. All EX4200 switches except the EX4200-24F-S and EX4200-48T-S switches are shipped with the power supplies and fan tray pre-installed in the rear panel of the switch. The power supplies and the fan tray for the EX4200-24F-S and EX4200-48T-S models are not shipped by default; you must order them separately and install them in the rear panel. The 320 W AC power supply and the 190 W DC are flush with the chassis. The 600 W AC power supply and 930 W AC power supply extend out of the chassis by 2.25 in. Power cord retainer clips extend out of the power supply by 3 in.

Figure 4: EX4200 Switch Rear PanelEX4200 Switch Rear Panel

LCD Panel in EX4200 Switches

The LCD panel on the front panel of the switch shows two lines of text, each of which can contain 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 5.

Figure 5: LCD PanelLCD Panel

You can configure the second line of 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.

Note:

The chassis viewer in the J-Web interface also displays the LCD panel. From the J-Web interface, you can view real-time status information in the LCD panel. See Dashboard for EX Series Switches.

LCD Panel Modes

The LCD panel operates in four modes: boot, idle, status, and maintenance.

The LCD panel operates in boot mode during switch reboot. The boot mode displays the key milestones in the switch boot process. The boot mode does not have any menu options. After the boot process is complete, the LCD panel automatically reverts to the Idle menu.

In an EX4200 switch that is not a member of a Virtual Chassis, the first line of the LCD panel displays the slot number, the role of the switch, and hostname. For a standalone EX4200 switch, the slot number is always 00 and the role is always RE (for primary).

In an EX4200 switch that is a member of a Virtual Chassis, the first line of the LCD panel displays:

  • The slot number (the member ID for the Virtual Chassis member)

  • Role of the switch in a Virtual Chassis (RE for primary, BK for backup, and LC for linecard member)

  • Hostname

In the idle mode, the second line displays the mode of the network ports’ Status LED and the number of chassis alarms. The number of alarms is updated every second.

In the status mode, the second line displays:

  • Virtual Chassis port (VCP) status (for an EX4200 switch that is a member of a Virtual Chassis)

  • Status of the power supply

  • Status of the fan and temperature

  • Version of Junos OS for EX Series switches loaded on the switch

In the maintenance mode, the second line displays one of the following options that you can use to configure and troubleshoot the switch:

  • System halt

  • System reboot

  • Load rescue

  • Request VC port (for an EX4200 switch that is a member of a Virtual Chassis)

  • Factory default

  • System EZSetup

Chassis Status LEDs in EX4200 Switches

The front panel of an EX4200 switch has three LEDs on the far right side of the panel, next to the LCD panel (see Figure 9).

Figure 9: Chassis Status LEDs in an EX4200 SwitchChassis Status LEDs in an EX4200 Switch

Table 1 describes the chassis status LEDs in an EX4200 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 lcd.

Table 1: Chassis Status LEDs in an EX4200 Switch

LED Label

Color

State and Description

ALM (Alarm)

Unlit

There is no alarm or the switch is halted.

Red

There is a major alarm.

Note:

When you connect power to the switch, the Alarm (ALM) LED lights red. This behavior is normal. Plugging an active Ethernet cable into the management (MGMT) port on the switch completes the network link and turns off the ALM LED. (See Connect a Device to a Network for Out-of-Band Management.)

Connecting the switch to a dedicated management console instead of a network does not affect the ALM LED. The LED remains red until the switch is connected to a network.

Amber

There is a minor alarm.

Note:

The Alarm (ALM) LED lights amber if you commit a configuration to make it active on the switch and do not also create a rescue configuration to back it up. To save the most recently committed configuration as the rescue configuration, enter the operational mode command request system configuration rescue save.

SYS (System)

Green

  • On steadily—Junos OS for EX Series switches has been loaded on the switch.

  • Blinking—The switch is booting.

  • Off—The switch is powered off or is halted.

MST (Primary)

Green

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.

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). The management port is set to full-duplex and the speed is set to 100 Mbps.

Figure 10: LEDs on the Management Port on an EX4200 SwitchLEDs on the Management Port on an EX4200 Switch

Table 2 describes the Link/Activity LED.

Table 2: Link/Activity LED on the Management Port on EX4200 Switches

LED

Color

State and Description

Link/Activity

Green

  • 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.

Table 3 describes the Status LED (administrative status).

Table 3: Status LED on the Management Port on EX4200 Switches

LED

Color

State and Description

Status

Green

  • On steadily—Administrative status is enabled.

  • Off—Administrative status is disabled.

Network Port LEDs in EX4200 Switches

Each network port on the switch has two LEDs. The four figures in this topic show the location of those LEDs:

  • Figure 11 shows the location of the LEDs on the network ports on the front panel.

  • Figure 12 shows the location of the LEDs on the uplink module ports on the SFP uplink module.

  • Figure 13 shows the location of the LEDs on the uplink module ports on the SFP+ and SFP+ MACsec uplink modules.

  • Figure 14 shows the location of the LEDs on the uplink module ports on the XFP uplink module.

Figure 11: LEDs on the Network Ports on the Front PanelLEDs on the Network Ports on the Front Panel
Figure 12: LEDs on the Uplink Module Ports on the SFP Uplink ModuleLEDs on the Uplink Module Ports on the SFP Uplink Module
Figure 13: LEDs on the Uplink Module Ports on the SFP+ and SFP+ MACsec Uplink ModulesLEDs on the Uplink Module Ports on the SFP+ and SFP+ MACsec Uplink Modules
Figure 14: LEDs on the Uplink Module Ports on the XFP Uplink ModuleLEDs on the Uplink Module Ports on the XFP Uplink Module

The LEDs labeled Link/Activity LED in Figure 11, Figure 12, Figure 13, and Figure 14 indicate link activity. The LEDs labeled Status LED in Figure 11, Figure 12, Figure 13, and Figure 14 indicate the status of one of the four port parameters. The port parameters are administrative status, duplex mode, Power over Ethernet (PoE) status, and speed.

Table 4 describes the Link/Activity LED.

Table 4: Link/Activity LED on Network Ports

LED

Color

State and Description

Link/Activity

Green

  • 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.

Table 5 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.

Table 5: Status LED on Network Ports

LED

LCD Indicator

State and Description

Status

LED: ADM

Indicates the administrative status (enabled or disabled). The status indicators are:

  • Green—Administrative status enabled.

  • Unlit—Administrative status disabled.

LED: DPX

Indicates the duplex mode.

The uplink module ports are always set to full-duplex; therefore, the LED is always green.

The status indicators for network ports on the front panel are:

  • Green—Port is set to full-duplex mode.

  • Unlit—Port is set to half-duplex mode.

LED: MACsec

Indicates the MACsec status (enabled or disabled). MACsec can be enabled only if you have installed the SFP+ MACsec uplink module. The status indicators are:

  • Green—MACsec is enabled on the port.

  • Unlit—MACsec is disabled on the port.

LED: POE

Indicates the PoE status on switches with PoE-enabled ports.

Here the term POE refers to both PoE and PoE+ as applicable.

PoE is not enabled on uplink module ports; therefore, the LED for those ports is always unlit.

The status indicators for network ports on the front panel are:

  • Green—PoE is enabled on the port.

  • Amber—PoE is enabled on the port, but no power is drawn from the port because of one of the following:

    • No device that draws power from the port is connected to the port.

    • A device that draws power from the port is connected to the port, but the device is not drawing any power from the port.

  • Unlit—PoE is not enabled on the port.

LED: SPD

Indicates the speed.

The speed indicators for network ports on the front panel are:

  • One blink per second—10 Mbps

  • Two blinks per second—100 Mbps

  • Three blinks per second—1000 Mbps

The speed indicators for network ports on the SFP uplink module are:

  • Green—1000 Mbps

  • Unlit—10/100 Mbps

The speed indicators for network ports on the SFP+ and SFP+ MACsec uplink module are:

  • Green—The speed of the transceiver installed in the port is the same as the speed at which the uplink module port is configured to operate.

  • Unlit—The speed of the transceiver installed in the port is not the same as the speed at which the uplink module port is configured to operate.

The speed of the XFP uplink module ports is always 10 Gbps, which is also the speed of XFP transceivers, therefore, this LED is always green on an XFP uplink module.