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, and EX3400-48T-AFI 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 Ports
Front 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 Ports
Front 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 Supply
Rear 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 Supply
Rear 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 Switch
Chassis 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 Connecting 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 master.

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

In a Virtual Chassis configuration:

  • On steadily—The switch is functioning normally and is the master 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 Switch
LEDs 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

Each RJ-45 network port and the uplink port on an EX3400 switch have two LEDs each that indicate link/activity and port status. See Figure 7, Figure 8, and Figure 9.

Figure 7: LEDs on the RJ-45 Network Ports
LEDs on the RJ-45 Network
Ports

Table 4 describes the Link/Activity LED.

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.

Figure 10 shows the LEDs that indicate the status of one of the four port parameters—speed, duplex mode, administrative status, and Power over Ethernet (PoE) status. 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 RJ-45 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. The LED labeled PoE is not available on switch models with RJ-45 network ports that do not provide PoE.

Figure 10: Port Mode LEDs on EX3400 Switches
Port Mode LEDs on EX3400
Switches
  1
Port mode LEDs
 

Table 5 describes the Status LED on the RJ-45 network ports.

Table 5: Status LED on the RJ-45 Network Ports in EX3400 Switches

Port Parameters

State and Description

Speed (SPD)

Indicates the speed. The speed indicators are:

  • Unlit—10 Mbps

  • Blinking—100 Mbps

  • On steadily—1000 Mbps

Duplex mode (DX)

Indicates the duplex mode. The status indicators are:

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

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

Administrative status (EN)

Indicates the administrative status. The status indicators are:

  • Green—Port is administratively enabled.

  • Unlit—Port is administratively disabled.

PoE status (PoE)

Indicates the PoE status. The status indicators for are:

  • On steadily—PoE is available on the port, a device that draws power from the port is connected to the port, and the device is drawing power from the port.

  • Blinking—PoE is available 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 available on the port.

Note: PoE Status LED is available on the following EX3400 switch models:

  • EX3400-24P

  • EX3400-48P

The uplink ports operate in full-duplex mode and PoE is not applicable on uplink ports. The Status LED on uplink ports indicate the Speed (SPD) and Administrative status (EN). Table 6 describes the Status LED on the uplink ports.

Port Parameters

State and Description

Status LED

Indicates the speed and administrative status.

  • The indicators for SFP+ uplink ports are:

    • On steadily—10 Gbps

    • Blinking—1000 Mbps

    • Unlit—The port is administratively disabled or the link is down

  • The indicators for QSFP+ uplink ports are:

    • On steadily—40-Gigabit port is up

    • Unlit—40-Gigabit port is down

You can tell which port parameter is indicated by the Status LED on RJ-45 network ports and uplink ports by issuing the operational mode command show chassis led.