EX4400 Chassis

Chassis Physical Specifications for EX4400 Switches

The EX4400 switch chassis is a rigid sheet-metal structure that houses all components of the switch. Table 1 summarizes the physical specifications of the EX4400 switch chassis.

Figure 1: EX4400 Switches—Dimensions and Clearance Requirements

Table 1: Physical Specifications of the EX4400 Switch Chassis
Description	Value
Chassis height	1.72 in. (4.37 cm)
Chassis width	17.39 in. (44.17 cm) The outer edges of the front-mounting brackets extend the width to 19 in. (48.2 cm).
Chassis depth	With no power supply, fan module, or extension module installed: 15.71 in. (39.9 cm) With power supply and fan module installed: 16.93 in. (43 cm) The cables and power supply cords you connect to the switch extend the depth. With power supply, fan module, and extension module installed: 17.35 in. (44.07 cm)
Weight	Switch with no power supply, fan module, or extension module installed: 12–13.67 lb (5.43–6.2 kg) Fan module: 0.26 lb (0.12 kg) 550 W AC power supply: 1.76 lb (0.8 kg) 550 W DC power supply: 1.65 lb (0.75 kg) 1050 W AC power supply: 1.98 lb (0.9 kg) 1600 W AC power supply: 2 lb (0.91 kg) 2000 W AC power supply: 2.05 lb (0.93 kg) 1x100GbE QSFP28 extension module (model number: EX4400-EM-1C): 0.26 lb (0.12 kg) 4x10GbE SFP+ extension module (model number: EX4400-EM-4S): 0.2 lb (0.09 kg) 4x25GbE SFP28 extension module (model number: EX4400-EM-4Y): 0.29 lb (0.13 kg) We ship the switch preinstalled with one power supply, two fan modules, one cover for the empty extension module slot, and one cover for the empty power supply slot.

You can mount an EX4400 switch:

On a two-post rack or on two posts of a 19-in. four-post rack by using the two-post mounting brackets provided with the switch.
Flush with the front posts of a 19-in. four-post rack by using a separately orderable four-post rack mount kit.
In a recessed position inside a 19-in. four-post rack by using the recessed-mounting brackets provided with a separately orderable four-post rack mount kit.
On a desk or other level surface by using the rubber feet provided with the switch.
On a wall by using a separately orderable wall mount kit.

To know the part numbers for ordering the separately orderable mounting kits, see the EX4400 Switches Datasheet.

See EX4400 Models and Specifications to know more about the EX4400 models and their specifications.

Chassis Status LEDs on EX4400 Switches

Each EX4400 switch has four chassis status LEDs (labeled SYS, ALM, MST, and CLD) on the right-hand side of the front panel (see Figure 2).

For information on the blink patterns of the CLD LED, which provide the cloud connection status of the switch, see Cloud Ready LED Blink Patterns, or see Cloud Connection Process, to understand how the cloud connection works.

Figure 2: Chassis Status LEDs in EX4400 Switches

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Chassis status LEDs

Table 2 describes the chassis status LEDs labeled SYS, ALM, and MST on an EX4400 switch, their colors and states, and the status they indicate. 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 2: SYS, ALM, and MST Chassis Status LEDs on EX4400 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	There is a major hardware fault, such as a temperature alarm or a power failure alarm, and the switch is halted. A major alarm indicates a critical error condition that requires immediate attention (see Chassis Component Alarm Conditions on EX4400 Switches).
	Amber	There is a minor alarm, such as a software or a hardware error. Power off the switch and then power it on. Monitor the switch to see whether it is working properly. A minor alarm indicates a noncritical condition that requires monitoring or maintenance. A minor alarm that is left unchecked might cause interruption in service or performance degradation.
	Unlit	There is no alarm 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 functioning as 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.

Note:

Issuing request system power-off doesn't power-off the SYS LED, which continues to blink. It is because this command will power-off only the CPU board. As CPU board asserts platform reset during shutdown process, it will trigger SYS LED to enter default state of blinking. This is expected behavior.

Note:

In a VPC involving EX4400-48XP or EX4400-48MXP, if request system power-off member member number of the EX4400-48XP or EX4400-48MXP is issued to power-off the FPC; all of its LEDs become unlit as expected but the SYS LED continues to blink, the CLD LED continues to glow (Green), and the Virtual Chassis port LEDs at the rear of the switch will continue to glow (Amber).

LEDs on the Management Port on EX4400 Switches

The management port—labeled MGMT—has two LEDs that indicate link activity and status of the port (see Figure 3 and Figure 4). The management port is on the rear panel of EX4400 switch models except the EX4400-24X model. The management port is on the front panel of the EX4400-24X model.

Figure 3: LEDs on the Management Port on EX4400 Switches Except the EX4400-24X Model

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Link activity LED

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Status LED

Figure 4: LEDs on the Management Port on the EX4400-24X Model

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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 EX4400 Switches
LED	State and Description
Link activity	On steadily—The port and the link are active, but there is no link activity. Blinking—The port and the link are active, and there is link activity. Off—The port is not active.
Status	Indicates the speed: On steadily—Link speed is 1000 Mbps. Blinking—Link speed is 100 Mbps. Off—Link speed is 10 Mbps.

LEDs on the RJ-45, SFP, and SFP+ Network Ports, QSFP28 Ports, and Extension Module Ports on EX4400 Switches

The RJ-45, small form-factor pluggable (SFP), and small form-factor pluggable plus (SFP+) network ports, SFP+, SFP28, and QSFP28 extension module ports, and QSFP28 ports on EX4400 switches have LEDs that show the link activity and status of the port.

LEDs on the Network Ports
LEDs on the QSFP28 Ports
LEDs on the Extension Module Ports

LEDs on the Network Ports

Figure 5 shows the LEDs on the RJ-45 network ports on EX4400-24T, EX4400-24P, EX4400-24MP, EX4400-48T, EX4400-48P, EX4400-48XP, EX4400-48MXP and EX4400-48MP switches. Figure 6 shows the LEDs on the SFP+ network ports on EX4400-24X switches. Figure 7 shows the LEDs on the SFP network ports on EX4400-48F switches. Figure 8 shows the LEDs on the SFP+ network ports on EX4400-48F switches.

Figure 5: LEDs on the RJ-45 Network Ports on EX4400-24T, EX4400-24P, EX4400-24MP, EX4400-48T, EX4400-48P, and EX4400-48MP Switches

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Link activity LED

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Status LED

Figure 6: LEDs on the SFP+ Network Ports on EX4400-24X Switches

1 — Link activity LED for the upper port	3 — Status LED for the lower port
2 — Status LED for the upper port	4 — Link activity LED for the lower port

Figure 7: LEDs on the SFP Network Ports on EX4400-48F Switches

1 — Link activity LED for the upper port	3 — Status LED for the lower port
2 — Status LED for the upper port	4 — Link activity LED for the lower port

Figure 8: LEDs on the SFP+ Network Ports on EX4400-48F Switches

1 — Link activity LED for the upper port	3 — Status LED for the lower port
2 — Status LED for the upper port	4 — Link activity LED for the lower port

Table 4 describes the link activity LED on the network ports.

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

EX4400 switches have network port mode LEDs labeled SPD, DX, and EN on the right-hand side of the front panel; models with ports that support PoE-bt have an additional mode LED labeled POE (see Figure 9). These LEDs indicate the status of the network ports. Use the mode button on the right-hand side of the front panel to toggle the status LEDs to show the different port parameters for the network ports; the port parameter is indicated by the LED that is lit. Table 5 describes the status LEDs.

Figure 9: Port Mode LEDs on EX4400 Switches

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Port Mode LEDs

Table 5: Status LEDs on the RJ-45, SFP, and SFP+ Network Ports
LED	Color	State and Description
SPD	Green	Indicates the speed at which the RJ-45, SFP, and SFP+ network ports operate. The speed indicators for EX4400-24T, EX4400-24P, EX4400-24MP, EX4400-48T, EX4400-48P, and EX4400-48MP models are: On steadily—1000 Mbps Blinking—100 Mbps Unlit—10 Mbps The speed indicators for the SFP ports on the EX4400-48F model are: On steadily—1000 Mbps Blinking—100 Mbps The speed indicators for the SFP+ ports on EX4400-24X and EX4400-48F models are: On steadily—10 Gbps Blinking—1000 Mbps
	Amber	The speed indicators for EX4400-24MP and EX4400-48MP are: On steadily—2.5 Gbps Blinking—5 Gbps
	Blue	The speed indicator for EX4400-24MP and EX4400-48MP is: On steadily—10 Gbps
DX	Green	Indicates the duplex mode. The status indicators are: 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: On steadily—The port is administratively enabled. Unlit—The port is administratively disabled.
POE	Green	Indicates the PoE-bt mode for ports that support PoE-bt. The status indicators are: On steadily—PoE-bt is enabled on the port, and a device is drawing power. Blinking—PoE-bt is enabled on the port, but no power is drawn from the port. Unlit—PoE-bt is not enabled on the port.

Table 6 describes the beacon functionality on the status LEDs on the RJ-45, SFP, and SFP+ network ports when you execute the request chassis beacon command.

Table 6: Beacon Functionality on the Status LEDs on the RJ-45, SFP, and SFP+ Network Ports
LED	Color	State	Description
Status LEDs on all the ports	Green	Blinking, irrespective of the mode the ports are operating in.	Helps identify the switch.
Status LED on the applicable port	Green		Helps identify the port.

LEDs on the QSFP28 Ports

Figure 10 and Figure 11 show the LEDs for the QSFP28 ports on EX4400 switch models except the EX4400-24X model. The top left LEDs are lit green when the ports operate as Virtual Chassis ports (VCPs).

Figure 12 and Figure 13 show the LEDs for the QSFP28 ports on the EX4400-24X model. The LEDs on the extreme left hand side are lit green when the ports operate as VCPs. Table 7 describes the LED when the ports are configured as network ports.

Figure 10: LEDs for the QSFP28 Ports on EX4400 Switch Models Except the EX4400-24X Model

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LEDs for the upper port

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LEDs for the lower port

Figure 11: Link Activity LEDs for the QSFP28 Ports on EX4400 Switch Models Except the EX4400-24X Model

Figure 12: LEDs for the QSFP28 Ports on the EX4400-24X Model

Figure 13: Link Activity LEDs for the QSFP28 Ports on the EX4400-24X Model

Table 7: Link Activity LED on the QSFP28 Ports
LED	Color	State and Description
Link activity (non-channelized ports)	Green	On steadily—A 100-Gbps link is established, but there is no link activity. Blinking—A 100-Gbps link is established, and there is link activity. Off—There is no link.
Link activity (non-channelized ports)	Amber Note: The support for 40-Gbps nonchannelized speed is available from Junos OS Release 22.1R1.	On steadily—A 40-Gbps link is established, but there is no link activity. Blinking—A 40-Gbps link is established, and there is link activity. Off—There is no link.
All four LEDs (channelized ports). The LEDs correspond to the four channels.	Green	On steadily—A 4x25-Gbps channelized link is established, but there is no link activity. Blinking—A 4x25-Gbps channelized link is established, and there is link activity. Off—There is no link.
	Amber	On steadily—A 4x10-Gbps channelized link is established, but there is no link activity. Blinking—A 4x10-Gbps channelized link is established, and there is link activity. Off—There is no link.

LEDs on the Extension Module Ports

Figure 14 shows the LEDs on the 1x100GbE QSFP28 extension module port. Table 9 describes the LEDs on that port.

Figure 15 shows the LEDs on the 4x10GbE SFP+ extension module ports. Table 8 describes the link activity LED on those ports and Table 10 describes the status LED on those ports.

Figure 16 shows the LEDs on the 4x25GbE SFP28 extension module ports. Table 8 describes the link activity LED on those ports and Table 11 describes the status LED on those ports.

Figure 14: LEDs on the 1x100GbE QSFP28 Extension Module Port

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LEDs

Figure 15: LEDs on the 4x10GbE SFP+ Extension Module Ports

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Link activity LED

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Status LED

Table 8: Link Activity LED on the Extension Module Ports
Color	State and Description
Green	On steadily—The port and the link are active, but there is no link activity. Blinking—The port and the link are active, and there is link activity. Unlit—The port is not active.

Table 9: LEDs on the 1x100GbE QSFP28 Extension Module Port
LED	Color	State and Description
The LED on the extreme left	Green	On steadily—A 100-Gbps link is established, but there is no link activity. Blinking—A 100-Gbps link is established, and there is link activity. Off—There is no link.
The LED on the extreme left	Amber	On steadily—A 40-Gbps link is established, but there is no link activity. Blinking—A 40-Gbps link is established, and there is link activity. Off—There is no link.
All four LEDs (channelized ports). The LEDs correspond to the four channels.	Green	On steadily—A 4x25-Gbps channelized link is established, but there is no link activity. Blinking—A 4x25-Gbps channelized link is established, and there is link activity. Off—There is no link.
	Amber	On steadily—A 4x10-Gbps channelized link is established, but there is no link activity. Blinking—A 4x10-Gbps channelized link is established, and there is link activity. Off—There is no link.

Table 10: Status LED on the 4x10GbE SFP+ Extension Module Ports
Color	State and Description
Green	Indicates the speed. The speed indicators are: On steadily—10 Gbps One blink per second—1000 Mbps Unlit—The port is not active.

Figure 16: LEDs on the 4x25GbE SFP28 Extension Module Ports

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Link activity LED

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Status LED

Table 11: Status LED on the 4x25GbE SFP28 Extension Module Ports
Color	State and Description
Green	Indicates the speed. The speed indicators are: On steadily—10 Gbps Three blinks per second—25 Gbps Unlit—The port is not active.

ON THIS PAGE

Chassis Physical Specifications for EX4400 Switches

Chassis Status LEDs on EX4400 Switches

LEDs on the Management Port on EX4400 Switches

LEDs on the RJ-45, SFP, and SFP+ Network Ports, QSFP28 Ports, and Extension Module Ports on EX4400 Switches

LEDs on the Network Ports

LEDs on the QSFP28 Ports

LEDs on the Extension Module Ports