Which airflow direction does the QFX5100-48T-AFI use?

It uses front-to-back airflow, drawing cool air in from the front and exhausting warm air out the back, optimized for hot-aisle/cold-aisle data center layouts.

What network operating system does this switch run?

It runs Juniper’s Junos OS, offering consistent CLI, automation APIs, modular architecture, and a rich feature set for Layer 2/Layer 3 protocols.

Can the QFX5100-48T-AFI be deployed in a Virtual Chassis?

Yes, it supports Virtual Chassis technology, allowing you to interconnect up to 10 QFX5100 switches and manage them as a single logical device for simplified operations.

Which Layer 2 and Layer 3 features are supported?

It supports VLAN, VXLAN, MLAG, Spanning Tree, OSPF, BGP, IS-IS, VRF-Lite, and advanced MPLS capabilities, delivering full data center fabric flexibility.

How is the switch managed and automated?

Management options include Junos CLI, Junos Space, Juniper Network Director, REST APIs, Ansible modules, and native Python scripting for end-to-end network automation.

What uplink options are available on the QFX5100-48T-AFI?

Six QSFP ports support 4×10 GbE breakout or native 40 GbE, enabling spine-leaf architectures with flexible uplink speeds.

Does the QFX5100-48T-AFI support PoE/PoE+?

No, the QFX5100-48T-AFI does not provide PoE or PoE+; it is optimized for data center leaf and spine deployments where power over Ethernet is not required.

What are the typical use cases for this switch?

Ideal use cases include top-of-rack leaf switches, campus aggregation, NFV infrastructure, and spine-leaf fabrics in cloud and enterprise data centers.

What is the power consumption of the QFX5100-48T-AFI?

In typical operation, the switch consumes around 250 W; maximum power draw with all modules and fans installed is approximately 350 W, depending on environment.

Which environments and temperature ranges are supported?

Operating temperature ranges are 0 °C to 40 °C (32 °F to 104 °F), with relative humidity from 5% to 90% non-condensing, suitable for standard data center conditions.

Does Juniper offer a warranty and support for this model?

Yes, Juniper provides a limited lifetime hardware warranty and offers optional support tiers through Juniper Care for software updates, 24×7 support, and advance replacement.

How do I order spare modules and parts for the QFX5100-48T-AFI?

Spare fans, power supplies, and transceiver modules can be ordered via Juniper’s part numbers; consult Juniper’s Spare Module Matrix or contact your Juniper sales representative.

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QFX5100-48T-AFI

Name: QFX5100, 48 100M/1G/10G Base-T, 6 QSFP ports, redundant fans, redundant power supplies, PSU to built in port air flow.
Brand: Juniper
SKU: QFX5100-48T-AFI
Price: 9378.00 USD
Availability: InStock
Rating: 4.2 (5 reviews)

Description:: QFX5100, 48 100M/1G/10G Base-T, 6 QSFP ports, redundant fans, redundant power supplies, PSU to built in port air flow.
Rating:: 4.2(5)
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QFX5100-48T-AFI Overview

QFX5100-48T-AFI is a high-performance Ethernet switch engineered with a robust, modular architecture to meet the demanding needs of data centers and enterprise networks. It is designed with advanced stacking and scalability in mind, ensuring optimal performance while maintaining low latency in high-density environments.

QFX5100-48T-AFI offers 48 high-speed 10/100/1000 copper ports alongside 4 QSFP+ uplink ports, delivering versatile connectivity options for diverse network deployments. With support for AC power supply configurations and a focus on reliable, mission-critical performance, this switch meets the rigorous requirements of modern access and aggregation applications.

QFX5100-48T-AFI price is $9,378.00, a 72.8% saving from the Juniper list price of $34,500.00. QFX5100-48T-AFI is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QFX5100-48T-AFI for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.

QFX5100-48T-AFI Specifications

Product Type: Switch
Power Source: AC Power Supply
Layer Supported: Layer 2 / Layer 3
Form Factor: Rack-mount
Power Consumption: 220W
Number of Ethernet Ports: 24–48 Ports
Number of Downlink Ports: 48 Ports
Manageable: Managed
Ethernet Technology: 10/100/1000
Media Type Supported: Twisted Pair
Redundant Power Supply Supported: No
Manufacturer Part Number: QFX5100-48T-AFI
Uplink Configuration: 10G
IOS: IP Services
POE Support: Non POE
SFP Ports: 4 SFP Ports
Memory: 4 GB
Rack Units: 1 RU
Interface Ports: 10/100/1000
Port/Expansion Slot Details: 48 x 10GBase-T ports and 4 x 40G QSFP+ uplink ports
Flash Memory: 256 MB
Switching Capacity: 1440 Gbps
Switching Capacity with Stacking: N/A
Product Name: Juniper Networks QFX5100-48T-AFI Ethernet Switch
Height: 1.75 inches
Width: 17.5 inches
Depth: 18 inches
Weight: 19 lbs

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	QFX5100-48T-AFI	QFX5100-24Q-DC-AFO	QFX5100-24Q-3AFO	QFX5100-96S-DC-AFI	QFX5100-24Q-AA-AFI
Depth	18 inches	12 inches	17 inches	18 inches	17 inches
Ethernet Technology	10/100/1000	10/100/1000	10/100/1000	10/100/1000	10/100/1000
Flash Memory	256 MB	256 MB	256 MB	256 MB	256 MB
Form Factor	Rack-mount	Rack-mount	Rack-mount	Rack-mount	Rack-mount
Height	1.75 inches	1.73 inches	1.73 inches	1.75 inches	1.75 inches
IOS	IP Services	IP Services	IP Lite	IP Services	IP Services
Interface Ports	10/100/1000	10/100/1000	10/100/1000	10/100/1000	10/100/1000
Layer Supported	Layer 2 / Layer 3	Layer 2 / Layer 3	Layer 3	Layer 2 / Layer 3	Layer 2 / Layer 3
Manageable	Managed	Managed	Managed	Managed	Managed
Manufacturer Part Number	QFX5100-48T-AFI	QFX5100-24Q-DC-AFO	QFX5100-24Q-3AFO	QFX5100-96S-DC-AFI	QFX5100-24Q-AA-AFI
Media Type Supported	Twisted Pair	Fiber	Fiber	Fiber	Fiber
Memory	4 GB	4 GB	4 GB	512 MB	4 GB
Number of Downlink Ports	48 Ports	24 Ports	24 Ports	N/A	24 Ports
Number of Ethernet Ports	24–48 Ports	12–24 Ports	12–24 Ports	Over 48 Ports	12–24 Ports
POE Support	Non POE	Non POE	Non POE	Non POE	Non POE
Port/Expansion Slot Details	48 x 10GBase-T ports and 4 x 40G QSFP+ uplink ports	24 QSFP+ ports for high-density 40/100G connectivity	24 QSFP+ ports	N/A	24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports
Power Consumption	220W	230 W	370W	450 W	250 W
Power Source	AC Power Supply	DC Power Supply	AC Power Supply	Redundant Power Supply	Redundant Power Supply / AC Power Supply
Product Name	Juniper Networks QFX5100-48T-AFI Ethernet Switch	Juniper QFX5100-24Q-DC-AFO	Juniper QFX5100-24Q-3AFO	Juniper QFX5100-96S-DC-AFI	Juniper QFX5100-24Q-AA-AFI Switch
Product Type	Switch	Switch	Switch	Switch	Switch
Rack Units	1 RU	1 RU	1 RU	1 RU	1 RU
Redundant Power Supply Supported	No	No	No	Yes	Yes
SFP Ports	4 SFP Ports	N/A	N/A	96 SFP Ports	4 SFP Ports
Switching Capacity	1440 Gbps	1280 Gbps	1440 Gbps	1440 Gbps	1280 Gbps
Switching Capacity with Stacking	N/A	N/A	N/A	1440 Gbps	N/A
Uplink Configuration	10G	40G	40G	10G	40G
Weight	19 lbs	20 lbs	8 lbs	25 lbs	15 lbs
Width	17.5 inches	17.5 inches	17.5 inches	17.5 inches	19 inches

Reviews & Ratings

Bernard Colton

10G Base-T ports worked well for mixed environments.

Miles Davenport

Stable switching with good airflow design.

Tobias Finch

Reliable for server access roles.

Quincy Harrow

Easy to integrate into existing fabric.

Edmund Blakeley

Consistent performance.

Questions & Answers

What is the Juniper QFX5100-48T-AFI switch?

The QFX5100-48T-AFI is a high-performance data center switch from Juniper featuring 48 100M/1G/10G Base-T ports, 6 QSFP ports, redundant fans and power supplies, and front-to-back airflow to support demanding enterprise and cloud environments.

How many ports and what speeds does the QFX5100-48T-AFI support?

It provides 48 Base-T ports that auto-negotiate 100 Mbps, 1 Gbps, or 10 Gbps, plus 6 QSFP uplink ports for 40 Gbps connectivity, allowing flexible server and spine links.

What redundancy features ensure high availability?

The switch includes dual, hot-swappable AC or DC power supplies and redundant, front-to-back cooling fans, enabling uninterrupted operation during component maintenance or failure.

What is the switching capacity and throughput?

With a 1.44 Tbps backplane and up to 1.07 billion packets per second (bpps) forwarding performance, the QFX5100-48T-AFI handles large east-west data flows with low latency.

Related Searches Juniper Qfx5100 Series Switches

QFX5100-48T-AFO QFX5100-48S-DC-AFO QFX5100-48S-DC-AFI QFX5100-24Q-AFO QFX5100-24Q-DC-AFO QFX5100-24Q-AFI QFX5100-48S-D-3AFI QFX5100-48S-D-3AFO

QFX5100-48T-AFI Overview

QFX5100-48T-AFI Specifications

Product Type

Switch

Power Source

AC Power Supply

Layer Supported

Layer 2 / Layer 3

Form Factor

Rack-mount

Power Consumption

220W

Number of Ethernet Ports

24–48 Ports

Number of Downlink Ports

48 Ports

Manageable

Managed

Ethernet Technology

10/100/1000

Media Type Supported

Twisted Pair

Redundant Power Supply Supported

Manufacturer Part Number

QFX5100-48T-AFI

Uplink Configuration

10G

IOS

IP Services

POE Support

Non POE

SFP Ports

4 SFP Ports

Memory

4 GB

Rack Units

1 RU

Interface Ports

10/100/1000

Port/Expansion Slot Details

48 x 10GBase-T ports and 4 x 40G QSFP+ uplink ports

Flash Memory

256 MB

Switching Capacity

1440 Gbps

Switching Capacity with Stacking

N/A

Product Name

Juniper Networks QFX5100-48T-AFI Ethernet Switch

Height

1.75 inches

Width

17.5 inches

Depth

18 inches

Weight

19 lbs

Product Comparison Table

	QFX5100-48T-AFI	QFX5100-24Q-DC-AFO	QFX5100-24Q-3AFO	QFX5100-96S-DC-AFI	QFX5100-24Q-AA-AFI
Depth	18 inches	12 inches	17 inches	18 inches	17 inches
Ethernet Technology	10/100/1000	10/100/1000	10/100/1000	10/100/1000	10/100/1000
Flash Memory	256 MB	256 MB	256 MB	256 MB	256 MB
Form Factor	Rack-mount	Rack-mount	Rack-mount	Rack-mount	Rack-mount
Height	1.75 inches	1.73 inches	1.73 inches	1.75 inches	1.75 inches
IOS	IP Services	IP Services	IP Lite	IP Services	IP Services
Interface Ports	10/100/1000	10/100/1000	10/100/1000	10/100/1000	10/100/1000
Layer Supported	Layer 2 / Layer 3	Layer 2 / Layer 3	Layer 3	Layer 2 / Layer 3	Layer 2 / Layer 3
Manageable	Managed	Managed	Managed	Managed	Managed
Manufacturer Part Number	QFX5100-48T-AFI	QFX5100-24Q-DC-AFO	QFX5100-24Q-3AFO	QFX5100-96S-DC-AFI	QFX5100-24Q-AA-AFI
Media Type Supported	Twisted Pair	Fiber	Fiber	Fiber	Fiber
Memory	4 GB	4 GB	4 GB	512 MB	4 GB
Number of Downlink Ports	48 Ports	24 Ports	24 Ports	N/A	24 Ports
Number of Ethernet Ports	24–48 Ports	12–24 Ports	12–24 Ports	Over 48 Ports	12–24 Ports
POE Support	Non POE	Non POE	Non POE	Non POE	Non POE
Port/Expansion Slot Details	48 x 10GBase-T ports and 4 x 40G QSFP+ uplink ports	24 QSFP+ ports for high-density 40/100G connectivity	24 QSFP+ ports	N/A	24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports
Power Consumption	220W	230 W	370W	450 W	250 W
Power Source	AC Power Supply	DC Power Supply	AC Power Supply	Redundant Power Supply	Redundant Power Supply / AC Power Supply
Product Name	Juniper Networks QFX5100-48T-AFI Ethernet Switch	Juniper QFX5100-24Q-DC-AFO	Juniper QFX5100-24Q-3AFO	Juniper QFX5100-96S-DC-AFI	Juniper QFX5100-24Q-AA-AFI Switch
Product Type	Switch	Switch	Switch	Switch	Switch
Rack Units	1 RU	1 RU	1 RU	1 RU	1 RU
Redundant Power Supply Supported	No	No	No	Yes	Yes
SFP Ports	4 SFP Ports	N/A	N/A	96 SFP Ports	4 SFP Ports
Switching Capacity	1440 Gbps	1280 Gbps	1440 Gbps	1440 Gbps	1280 Gbps
Switching Capacity with Stacking	N/A	N/A	N/A	1440 Gbps	N/A
Uplink Configuration	10G	40G	40G	10G	40G
Weight	19 lbs	20 lbs	8 lbs	25 lbs	15 lbs
Width	17.5 inches	17.5 inches	17.5 inches	17.5 inches	19 inches

Questions & Answers

What is the Juniper QFX5100-48T-AFI switch?

How many ports and what speeds does the QFX5100-48T-AFI support?

It provides 48 Base-T ports that auto-negotiate 100 Mbps, 1 Gbps, or 10 Gbps, plus 6 QSFP uplink ports for 40 Gbps connectivity, allowing flexible server and spine links.

What redundancy features ensure high availability?

The switch includes dual, hot-swappable AC or DC power supplies and redundant, front-to-back cooling fans, enabling uninterrupted operation during component maintenance or failure.

What is the switching capacity and throughput?

With a 1.44 Tbps backplane and up to 1.07 billion packets per second (bpps) forwarding performance, the QFX5100-48T-AFI handles large east-west data flows with low latency.