QFX5120 Chassis

Chassis Physical Specifications for QFX5120 Switches

The QFX5120 switch chassis is a rigid sheet-metal structure that houses all components of the switch. Table 1 shows the physical specifications of the QFX5120 switch models.

Table 1: Physical Specifications of the QFX5120 Switch Models
Model	Height	Width	Depth	Weight
QFX5120-32C	1.7 in. (4.33 cm)	17.26 in. (43.84 cm)	20.27 in. (51.5 cm) excluding fan and power supply handles	21.12 lb (9.58 kg) with two power supplies and fans installed
QFX5120-48T	1.72 in. (4.37 cm)	17.36 in. (44.09 cm) The outer edges of the front-mounting brackets extend the width to 19 in. (48.2 cm)	20.48 in. (52.02 cm) excluding fan and power supply handles	24.25 lb (11 kg) with two power supplies and fans installed
QFX5120-48Y	1.72 in. (4.37 cm)	17.36 in. (44.09 cm) The outer edges of the front-mounting brackets extend the width to 19 in. (48.2 cm)	20.48 in. (52.02 cm) excluding fan and power supply handles	23.7 lb (10.75 kg) with two power supplies and fans installed
QFX5120-48YM	1.72 in. (4.37 cm)	17.36 in. (44.09 cm) The outer edges of the front-mounting brackets extend the width to 19 in. (48.2 cm)	20.48 in. (52.02 cm) excluding fan and power supply handles	24.8 lb (11.25 kg) with two power supplies and fans installed

Field-Replaceable Units in QFX5120 Switches

Field-replaceable units (FRUs) are components that you can replace at your site. The FRUs in QFX5120 switches are hot-removable and hot-insertable: You can remove and replace them without powering off the switch or disrupting switch functions. The QFX5120 switches have the following FRUs:

Power supplies
Fan modules
Transceivers

Note:

Transceivers are not part of the shipping configuration. If you want to purchase any of these components, you must order them separately.

Note:

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/. Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.

Chassis Status LEDs in QFX5120 Switches

The rear panel of QFX5120-32C switches has a chassis ID LED labeled ID (see Figure 1).

Figure 1: Chassis ID LED on a QFX5120-32C Switch

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Chassis ID LED (labeled ID)

Table 2 describes the chassis ID LED on QFX5120-32C switches, its color and states, and the status they indicate.

Table 2: Chassis ID LED on QFX5120-32C Switches
LED Label	Color	State and Description
ID	Yellow	Blinking—The beacon feature is enabled on the switch.
ID	Unlit	The beacon feature is not enabled on the switch. You can enable the beacon feature by using the `request chassis beacon` command.

The rear panel of QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches has four chassis status LEDs labeled ALM, SYS, MST, and ID (see Figure 2, Figure 3, and Figure 4).

Figure 2: Chassis Status LEDs on QFX5120-48T Switches

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Chassis status LEDs (labeled ALM, SYS, MST, and ID)

Figure 3: Chassis Status LEDs on QFX5120-48Y Switches

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Chassis status LEDs (labeled ALM, SYS, MST, and ID)

Figure 4: Chassis Status LEDs on QFX5120-48YM Switches

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Chassis status LEDs (labeled ALM, SYS, MST, and ID)

Table 3 describes the chassis status LEDs on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches, their colors and states, and the status they indicate.

Table 3: Chassis Status LEDs on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches
LED Label	Color	State and Description
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 action. See Chassis Component Alarm Conditions on QFX5120 Switches.
	Yellow	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 if 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.
SYS	Green	On steadily—Junos OS for QFX Series switches is loaded on the switch.
	Green	Blinking—The switch is a member in a QFX Series Virtual Chassis configuration.
	Unlit	The switch is powered off or is halted.
MST	Green	In a standalone QFX5120 switch: On steadily—The switch is functioning normally as the primary switch.
	Green	In a Virtual Chassis configuration: On steadily—The switch is functioning normally and is the primary switch. Blinking—The switch is functioning normally and is the backup.
	Unlit	In a standalone QFX5120 switch: The switch is powered off or halted. In a Virtual Chassis configuration: The switch is a linecard member.
ID	Blue	Blinking—The beacon feature is enabled on the switch.
ID	Unlit	The beacon feature is not enabled on the switch. You can enable the beacon feature by using the `request chassis beacon` command.

LEDs on the Management Port on QFX5120 Switches

QFX5120-32C switches have one management port on the front panel. Figure 5 shows the location of the management port on the QFX5120-32C and the LED on the port. The LED indicates link activity of the port. Table 4 describes the LED on the management port on QFX5120-32C switches.

QFX5120-48T switches have one management port on the rear panel. Figure 6 shows the location of the management port on the QFX5120-48T and the LEDs on the port. The LEDs indicate link activity and status of the port. Table 5 describes the LEDs on the management port on QFX5120-48T switches.

QFX5120-48Y switches have two management ports on the rear panel. Figure 7 shows the location of the management ports on the QFX5120-48Y and the LEDs on the ports. The LEDs indicate link activity and status of the port. Table 5 describes the LEDs on the management ports on QFX5120-48Y switches.

QFX5120-48YM switches have two management ports on the rear panel. Figure 8 shows the location of the management ports on the QFX5120-48YM and the LEDs on the ports. The LEDs indicate link activity and status of the port. Table 5 describes the LEDs on the management ports on QFX5120-48YM switches.

Figure 5: Location of the Management Port on QFX5120-32C Switches and the LED on the Port

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Link activity LED

Table 4: LED on the Management Port on QFX5120-32C Switches
LED	Color	State and Description
Link activity	Green	On steadily—The port and the link are active, but there is no link activity.
	Green	Blinking—The port and the link are active and there is link activity.
	Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

Figure 6: Location of the Management Port on QFX5120-48T Switches and the LEDs on the Port

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Status LED

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Link activity LED

Figure 7: Location of the Management Ports on QFX5120-48Y Switches and the LEDs on the Port

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Status LED

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Link activity LED

Figure 8: Location of the Management Ports on QFX5120-48YM Switches and the LEDs on the Port

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Status LED

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Link activity LED

Table 5: LEDs on the Management Ports on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches
LED	Color	State and Description
Link activity	Green	On steadily—The port and the link are active, but there is no link activity.
	Green	Blinking—The port and the link are active and there is link activity.
	Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.
Status	Green	On steadily—The link speed is 1000 Mbps.
	Yellow	On steadily—The link speed is 100 Mbps.
	Unlit	Either the port speed is 10 Mbps or the link is down.

Network Port LEDs on QFX5120 Switches

Network Port LEDs on QFX5120-32C Switches
Network Port LEDs on QFX5120-48T Switches
Network Port LEDs on QFX5120-48Y Switches
Network Port LEDs on QFX5120-48YM Switches

Network Port LEDs on QFX5120-32C Switches

Each SFP+ port on QFX5120-32C switches has one LED that shows the link activity of the port (see Figure 9). See Table 6 to learn more about that LED.

Each QSFP28 port on QFX5120-32C switches has four LEDs that show the link activity of the port (see Figure 10). The first LED operates when the port is not channelized; the other three LEDs operate when the port is channelized. See Table 7 to learn more about those LEDs.

Figure 9: LED on the SFP+ Ports on QFX5120-32C Switches

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LED for the SFP+ port 32

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LED for the SFP+ port 33

Table 6: LED on the SFP+ Ports on QFX5120-32C Switches
Color	State and Description
Green	On steadily—The port and the link are active, but there is no link activity.
Green	Blinking—The port and the link are active and there is link activity.
Unlit	The port is not active.

Figure 10: LEDs on the QSFP28 Ports on QFX5120-32C Switches

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LEDs on the QSFP28 ports

Table 7: LEDs on the QSFP28 Ports on QFX5120-32C Switches
Position	Color	State	Description
1	Green	On steadily	The port is not channelized, a 100 -Gbps or 40 -Gbps link is established, but there is no link activity. When this LED is on, the LEDs in positions 2 through 4 are off.
1	Green	Blinking	The port is not channelized, a 100 -Gbps or 40 -Gbps link is established, and there is link activity.
1–4	Green	On steadily	The port is channelized, a 25-Gbps or 10-Gbps link is established, but there is no link activity.
1–4	Green	Blinking	The port is channelized, a 25-Gbps or 10-Gbps link is established, and there is link activity.
1–4	Unlit	Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

Network Port LEDs on QFX5120-48T Switches

Each BASE-T port on QFX5120-48T switches has one LED that indicates the status of the port (see Figure 11). See Table 8 to learn more about that LED.

Each QSFP28 port on QFX5120-48T switches has one LED that indicates the status of the port (see Figure 12). See Table 9 to learn more about that LED.

Figure 11: LEDs on the 10-GbE BASE-T Ports on QFX5120-48T Switches

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LED for the BASE-T ports in the top row

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LED for the BASE-T ports in the bottom row

Table 8: LEDs on the BASE-T Ports on QFX5120-48T Switches
Color	State and Description
Green	On steadily—The port is operating at 10-Gbps speed, but there is no link activity.
Green	Blinking—The port is operating at 10-Gbps speed and there is link activity.
Yellow	On steadily—The port is operating at 1-Gbps speed, but there is no link activity.
	Blinking—The port is operating at 1-Gbps speed and there is link activity.
	Blipping—The beacon function is enabled on the port.
Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

Figure 12: LED on the QSFP28 Ports on QFX5120-48T Switches

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LED for the QSFP28 ports in the top row

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LED for the QSFP28 ports in the bottom row

Table 9: LED on the QSFP28 Ports on QFX5120-48T Switches
Color	State and Description
Green	When the port is not channelized and is configured to operate as one 100GbE or 40GbE interface: On steadily—The port is operational, but there is no link activity. Blinking—The port is operational and there is link activity.
	When the port is channelized and is configured to operate as two 50GbE interfaces: On steadily—The port is operational, both the interfaces are operational, but there is no link activity. Blinking—The port is operational and there is link activity on at least one of the interfaces.
	When the ports 50 and 51 are channelized and are configured to operate as four 25GbE or 10GbE interfaces: On steadily—All four breakout links are established, but there is no link activity on any of the channelized interfaces. Blinking—All four breakout links are established and there is link activity on at least one of the channelized interfaces.
Yellow	When the port is channelized and is configured to operate as two 50GbE interfaces: Blipping—The beacon function is enabled on the port.
Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

Network Port LEDs on QFX5120-48Y Switches

Each SFP28 port on QFX5120-48Y switches has two LEDs that show the link activity and status of the port (see Figure 13). See Table 10 to learn more about those LEDs.

Each QSFP28 port on QFX5120-48Y switches has four LEDs that show the link activity of the port (see Figure 14). The first LED operates when the port is not channelized; the other three LEDs operate when the port is channelized. See Table 11 to learn more about those LEDs.

Figure 13: LEDs on the SFP28 Ports on QFX5120-48Y Switches

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Link activity LED for the SFP28 ports

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Status LED for the SFP28 ports

Table 10: LEDs on the SFP28 Ports on QFX5120-48Y Switches
LED	Color	State and Description
Link activity	Green	On steadily—The port and the link are active, but there is no link activity.
	Green	Blinking—The port and the link are active and there is link activity.
	Unlit	The port is not active.
Status	Green	On steadily—The port is operating at 25-Gbps speed.
Status	Green	Blinking—The port is operating at 1-Gbps or 10-Gbps speed.

Figure 14: LEDs on the QSFP28 Ports on QFX5120-48Y Switches

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LEDs on the QSFP28 ports in the top row

Table 11: LEDs on the QSFP28 Ports on QFX5120-48Y Switches
Position	Color	State	Description
1	Green	On steadily	The port is not channelized, a 100 Gbps or 40 Gbps link is established, but there is no link activity. When this LED is on, the LEDs in positions 2 through 4 are off.
1	Green	Blinking	The port is not channelized, a 100 Gbps or 40 Gbps link is established, and there is link activity.
1–4	Green	On steadily	The port is channelized, a 25-Gbps or 10-Gbps link is established, but there is no link activity.
1–4	Green	Blinking	The port is channelized, a 25-Gbps or 10-Gbps link is established, and there is link activity.
All	Yellow	Blinking	The beacon function is enabled on the port.
1–4	Unlit	Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

Network Port LEDs on QFX5120-48YM Switches

Each SFP28 port on QFX5120-48YM switches has one LED that shows the link activity and status of the port (see Figure 15). See Table 12 to learn more about that LED.

Each QSFP28 port on QFX5120-48YM switches has one LED that shows the link activity and status of the port (see Figure 16). See Table 13 to learn more about those LEDs.

Figure 15: LED on the SFP28 Ports on QFX5120-48YM Switches

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LED on the SFP28 ports on QFX5120-48YM switches

Table 12: LED on the SFP28 Ports on QFX5120-48YM Switches
Color	State and Description
Green	On steadily—A link is established, but there is no link activity.
Green	Blinking—A link is established and there is link activity.
Yellow	Blinking—The beacon function is enabled on the port.
Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

Figure 16: LED on the QSFP28 Ports on QFX5120-48YM Switches

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LED on the QSFP28 ports on QFX5120-48YM switches

Table 13: LED on the QSFP28 Ports on QFX5120-48YM Switches
Color	State	Description
Green	On steadily	A link is established, but there is no link activity.
Green	Blinking	A link is established and there is link activity.
Yellow	Blinking	The beacon function is enabled on the port.
Unlit	Unlit	The port is administratively disabled, there is no power, the link is down, or there is a fault.

ON THIS PAGE

Chassis Physical Specifications for QFX5120 Switches

Field-Replaceable Units in QFX5120 Switches

Chassis Status LEDs in QFX5120 Switches

LEDs on the Management Port on QFX5120 Switches

Network Port LEDs on QFX5120 Switches

Network Port LEDs on QFX5120-32C Switches

Network Port LEDs on QFX5120-48T Switches

Network Port LEDs on QFX5120-48Y Switches

Network Port LEDs on QFX5120-48YM Switches