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DC powered model integrates well into our racks.
QFX5100-48S-DC-AFI
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QFX5100, 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, re...
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QFX5100-48S-DC-AFI
- Description:
- QFX5100, 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, redundant power supplies, PSU to built in port air flow.
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- Brand:
- Juniper
- GTIN:
- 832938068056
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QFX5100-48S-DC-AFI Overview
QFX5100-48S-DC-AFI is a high‐performance datacenter switch engineered with a scalable, fixed-configuration architecture that supports both Layer 2 and Layer 3 operations. It provides 48 SFP+ ports for high-density 10GbE connectivity along with a dedicated 40G uplink configuration, ensuring robust performance in environments that demand low latency and high throughput.
QFX5100-48S-DC-AFI offers flexible power options with a dedicated DC power supply and delivers energy‐optimized performance suitable for demanding enterprise and service provider networks. Its compact, rack-mount design and advanced stacking support (via Virtual Chassis technology) enable seamless network expansion and reliable operations across modern data center use cases.
QFX5100-48S-DC-AFI price is is available on request. Get immediate quote.
Request bulk order quote for QFX5100-48S-DC-AFI for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
QFX5100-48S-DC-AFI Specifications
- Product Type
- Switch
- Power Source
- DC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 300W
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 48 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Fiber
- Redundant Power Supply Supported
- No
- Manufacturer Part Number
- QFX5100-48S-DC-AFI
- Uplink Configuration
- 40G
- IOS
- IP Services
- POE Support
- Non POE
- SFP Ports
- 48 SFP Ports
- Memory
- 512 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- N/A
- Flash Memory
- 256 MB
- Switching Capacity
- 1280 Gbps
- Switching Capacity with Stacking
- N/A
- Product Name
- Juniper Networks QFX5100-48S-DC-AFI Datacenter Switch
- Height
- 1.72 inches
- Width
- 17.17 inches
- Depth
- 10.7 inches
- Weight
- 21 lbs
QFX5100-48S-DC-AFI Use Case
High-Density Leaf-Spine Switching in Hyperscale Data Centers
In hyperscale data centers, network architects deploy the QFX5100-48S-DC-AFI to connect 48 10GbE servers via SFP+/SFP and six 100GbE QSFP28 uplinks into a leaf-spine fabric. Redundant fans and power supplies combined with PSU-to-port airflow guarantee continuous operation and optimal thermal management. Benefit: delivers non-blocking 1.44Tbps throughput, sub-microsecond latency and 99.999% availability, enabling seamless capacity scaling and simplified operations.
Ultra-Low-Latency Trading Network for Financial Services
Financial exchanges integrate the QFX5100-48S-DC-AFI at trading floors to aggregate 48 direct 10GbE links to algorithmic trading servers and six 100GbE QSFP uplinks to exchange gateways. The built-in PSU-to-port airflow design and redundant components prevent thermal throttling and eliminate single points of failure. Outcome: achieves sub-microsecond round-trip latency, 24/7 fault tolerance and regulatory compliance through precision QoS and hardware redundancy.
Edge Aggregation for 5G Mobile Backhaul in Service Provider Networks
Service providers deploy the QFX5100-48S-DC-AFI at 5G cell sites to aggregate 48 SFP+/SFP links from remote radios and six 100GbE QSFP uplinks to the core network. The PSU-to-port airflow path plus redundant fans and power supplies maintain optimal performance in harsh edge environments. Benefit: delivers carrier-grade reliability, automated MPLS/EVPN segmentation and seamless failover, reducing OPEX and accelerating service roll-out.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QFX5100-48S-DC-AFI |  QFX5100-24Q-AA-AFI |  QFX5100-48S-DC-AFO |  QFX5100-96S-AFO |  QFX5100-96S-AFI | |
|---|---|---|---|---|---|
| Depth | 10.7 inches | 17 inches | 18 inches | 18.5 inches | 18 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10GbE | 10G |
| 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 | 1.72 inches | 1.75 inches | 1.75 inches | 1.73 inches | 1.75 inches |
| IOS | IP Services | IP Services | IP Services | Junos OS | N/A |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10GbE | 10G |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | QFX5100-48S-DC-AFI | QFX5100-24Q-AA-AFI | QFX5100-48S-DC-AFO | QFX5100-96S-AFO | QFX5100-96S-AFI |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 512 MB | 4 GB | 4 GB | 4 GB | 4 GB |
| Number of Downlink Ports | 48 Ports | 24 Ports | 48 Ports | 96 Ports | N/A |
| Number of Ethernet Ports | 24–48 Ports | 12–24 Ports | 24–48 Ports | Over 48 Ports | Over 48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | N/A | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports | N/A | Fixed configuration with 96 SFP+ downlink ports and 6 QSFP+ uplink ports | N/A |
| Power Consumption | 300W | 250 W | N/A | 370 W | N/A |
| Power Source | DC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper Networks QFX5100-48S-DC-AFI Datacenter Switch | Juniper QFX5100-24Q-AA-AFI Switch | Juniper QFX5100-48S-DC-AFO | Juniper Networks QFX5100-96S-AFO | Juniper QFX5100-96S-AFI |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | Yes | No | Yes | Yes |
| SFP Ports | 48 SFP Ports | 4 SFP Ports | 48 SFP Ports | 96 x 10GbE SFP+ ports | 96 SFP Ports |
| Switching Capacity | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1920 Gbps | 2560 Gbps |
| Switching Capacity with Stacking | N/A | N/A | 1280 Gbps | N/A | N/A |
| Uplink Configuration | 40G | 40G | 10G | 40G | 10G |
| Weight | 21 lbs | 15 lbs | 15 lbs | 15 lbs | 30 lbs |
| Width | 17.17 inches | 19 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
B
Byron Kendall
5
Strong SFP+ density with reliable airflow.
C
Cyril Manson
4
Stable performance for leaf switching.
E
Eamon Frost
4
No issues under sustained traffic.
L
Lester Vaughan
5
Excellent value for data center access.
Questions & Answers
What is the QFX5100-48S-DC-AFI switch?
The QFX5100-48S-DC-AFI is a high-performance data center switch featuring 48 SFP+/SFP ports, six QSFP ports, redundant power supplies and fans, and DC-to-airflow cooling.
How many ports and speeds does the QFX5100-48S-DC-AFI support?
It supports 48 SFP+/SFP ports at 1/10 GbE and six QSFP ports at 40 GbE for flexible uplinks and spine-leaf topologies.
What is the switching capacity and throughput of the QFX5100-48S-DC-AFI?
The switch delivers 1.44 Tbps of switching capacity and up to 1.07 Bpps of throughput for low-latency, high-density environments.
Does the QFX5100-48S-DC-AFI support redundant power supplies and fans?
Yes, it includes dual hot-swappable DC power supplies and fully redundant, front-to-back fans to ensure uninterrupted operation.
What is the airflow direction of the QFX5100-48S-DC-AFI?
This model uses built-in port (front-to-back) airflow for efficient hot-aisle/cold-aisle data center deployments.
Which Junos OS software features does the QFX5100-48S-DC-AFI support?
It supports advanced Junos OS features including VXLAN, EVPN, MLAG, QoS, MPLS, BGP, and segment routing for modern data centers.
Can the QFX5100-48S-DC-AFI be deployed in a Virtual Chassis configuration?
Yes, it can form a Virtual Chassis of up to 10 switches using high-speed QSFP+ uplinks for unified management and scaling.
What are the typical use cases for the QFX5100-48S-DC-AFI?
Ideal for spine-leaf fabrics, server top-of-racks, HPC clusters, and cloud-scale workloads requiring low latency and high port density.
What are the power consumption specifications of the QFX5100-48S-DC-AFI?
Maximum power draw is approximately 370 W under full load, with each DC power supply supporting up to 600 W.
What are the dimensions and rack-mount details?
The switch is 1 RU high, 17.25” deep, and mounts in standard 19” racks. Weight is 12.3 kg (27.1 lb) fully loaded.
What is the operating temperature range?
It operates between 0 °C and 40 °C (32 °F to 104 °F) with relative humidity from 5% to 90% non-condensing.
Which licenses are required for advanced features?
Junos OS comes with a Base license; advanced features like EVPN and MPLS require optional Advanced Feature licenses.
How can I manage and monitor the QFX5100-48S-DC-AFI?
Manage via CLI, Junos Space, J-Vision, NETCONF/REST APIs, and SNMP. It supports Zero-Touch Provisioning for rapid deployments.
What latency can I expect from the QFX5100-48S-DC-AFI?
Typical port-to-port latency is ≤500 ns, ensuring consistent low-latency performance for sensitive applications.
Does the QFX5100-48S-DC-AFI support VXLAN EVPN?
Yes, it fully supports VXLAN EVPN for scalable, multi-tenant fabrics with simplified provisioning and operational flexibility.
What warranty and support options are available?
Juniper offers a one-year limited warranty, with options for Juniper Care and Advanced services for 24/7 hardware and software support.