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EX3400 Chassis

Front Panel of an EX3400 Switch

The front panel of an EX3400 switch consists of the following components:

  • RJ-45 ports:

    • Depending on the switch model, 24 or 48 RJ-45 ports (labeled 0 through 23 or 0 through 47) that support 10/100/1000BASE-T Gigabit Ethernet connectors

    • PoE available in all RJ-45 ports in EX3400-24P and EX3400-48P models

    • PoE not available in any network port in EX3400-24T, EX3400-24T-DC, EX3400-48T, EX3400-48T-AFI, and EX3400-48T-DC models

  • Three chassis status LEDs

  • Four port status mode LEDs in models with PoE capability and three port status mode LEDs in models without PoE capability

  • One Factory Reset/Mode button

  • One Mini-USB console port (the Mini-USB Type-B console port accepts a Mini-B plug (5-pin) connector to connect to the console management device)

  • Four uplink ports that support SFP+ transceivers, SFP transceivers, or a combination of these transceivers. These uplink ports are configured as network ports by default. To use the uplink ports to interconnect Virtual Chassis members, you must configure them as VCPs. See Setting an Uplink Port on an EX Series or QFX Series Switch as a Virtual Chassis Port.

Figure 1 shows the front panel of an EX3400 switch with 24 Gigabit Ethernet ports. Figure 2 shows the front panel of an EX3400 switch with 48 Gigabit Ethernet ports.

Figure 1: Front Panel of an EX3400 Switch with 24 Gigabit Ethernet PortsFront Panel of an EX3400 Switch with 24 Gigabit Ethernet Ports
  1
RJ-45 ports
  4
Factory Reset/Mode button
  2
Chassis status LEDs
  5
Mini-USB console port
  3
Port status mode LEDs. The LED labeled PoE is present only on models with PoE capability.
  6
Uplink ports
Figure 2: Front Panel of an EX3400 Switch with 48 Gigabit Ethernet PortsFront Panel of an EX3400 Switch with 48 Gigabit Ethernet Ports
  1
RJ-45 ports
  4
Factory Reset/Mode button
  2
Chassis status LEDs
  5
Mini-USB console port
  3
Port status mode LEDs. The LED labeled PoE is present only on models with PoE capability.
  6
Uplink ports

Rear Panel of an EX3400 Switch

The rear panel of the EX3400 switch consists of the following components:

  • 1 USB port

  • 1 management Ethernet port that supports an RJ-45 connector

  • 1 RJ-45 console port (the RJ-45 console port accepts a cable with an RJ-45 connector to connect to the console management device)

  • 1 protective earthing terminal

  • 2 QSFP+ uplink ports. These uplink ports are configured as Virtual Chassis ports (VCPs) by default. You can use these uplink ports to interconnect Virtual Chassis members. To use the QSFP+ uplink ports as network ports, you must configure them as network ports.

  • 1 ESD point

  • 2 fan modules

  • CLEI code label

  • Serial Number ID Label

  • 1 AC power supply or DC power supply

  • Empty slot for power supply covered by a blank panel or DC power supply

Figure 3 shows the rear panel of an EX3400 switch with AC power supply.

The power cord retainer extends out of the chassis by 3 in. (7.62 cm). The fan module handle extends out of the chassis by 1.2 in. (3 cm).

Figure 3: Rear Panel of an EX3400 Switch with an AC Power SupplyRear Panel of an EX3400 Switch with an AC Power Supply
  1
USB port
  7
Fan modules
  2
Management Ethernet port
  8
CLEI code label
  3
RJ-45 console port
  9
Serial Number ID Label
  4
Protective earthing terminal
10
AC power supply
  5
QSFP+ uplink ports
11
Empty slot for power supply covered by a blank panel
  6
ESD point
 

Figure 4 shows the rear panel of an EX3400 switch with DC power supply.

Figure 4: Rear Panel of an EX3400 Switch with a DC Power SupplyRear Panel of an EX3400 Switch with a DC Power Supply
  1
USB port
  7
Fan modules
  2
Management Ethernet port
  8
CLEI code label
  3
RJ-45 console port
  9
Serial Number ID Label
  4
Protective earthing terminal
10
DC power supply
  5
QSFP+ uplink ports
11
Empty slot for power supply covered by a blank panel
  6
ESD point
 
Note:

EX3400 switches shipped after 2 February, 2017 have serial number ID label on the side panel of the chassis and on the rear panel of the chassis. EX3400 switches shipped before 2 February, 2017 have the serial number ID label only on the side panel of the chassis.

Chassis Status LEDs in EX3400 Switches

The front panel of an EX3400 switch has three chassis status LEDs labeled SYS, ALM, and MST (see Figure 5).

Figure 5: Chassis Status LEDs in an EX3400 SwitchChassis Status LEDs in an EX3400 Switch
  1
Chassis Status LEDs
 

Table 1 describes the chassis status LEDs in an EX3400 switch, their colors and states, and the status they indicate.

Table 1: Chassis Status LEDs in an EX3400 Switch

LED Label

Color

State and Description

SYS

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.

ALM

Red

There is a major alarm.

Note:

When you connect power to the switch, the alarm LED (ALM) glows red. This behavior is normal. Plugging an active Ethernet cable into the management port (MGMT) 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.

Yellow

There is a minor alarm.

Note:

The ALM LED glows yellow if you commit a configuration to make it active on the switch without creating 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.

Unlit

There is no alarm or the switch is halted.

MST

Green

In a standalone EX3400 switch:

  • On steadily—The switch is functioning normally as the primary.

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

In a Virtual Chassis configuration:

  • On steadily—The switch is functioning normally and is the primary in the Virtual Chassis configuration.

  • Blinking—The switch is functioning normally and 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 (yellow) 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.

You can view the colors of the two LEDs remotely through the CLI by issuing the operational mode command show chassis led.

Management Port LEDs in EX3400 Switches

The management port, which is on the rear panel of an EX3400 switch, has two LEDs that indicate link/activity and port status (see Figure 6).

Figure 6: LEDs on the Management Port on an EX3400 SwitchLEDs on the Management Port on an EX3400 Switch
  1
Link/Activity LED
  2
Status LED

Table 2 describes the Link/Activity LED.

Table 2: Link/Activity LED on the Management Port on an EX3400 Switch

LED

Color

State and Description

Link/Activity

Green

  • Blinking—The port and the link are active, and there is link activity.

  • Off—The port is not active.

Table 3 describes the Status LED.

Table 3: Status LED on the Management Port on an EX3400 Switch

LED

Color

State and Description

Status

Green

Indicates the speed. The speed indicators are:

  • Off—Link speed is 10 Mbps

  • Blinking—Link speed is 100 Mbps

  • On Steadily—Link speed is 1000 Mbps