QFX5100-48S-D-3AFI - Juniper QFX5100-48S-D-3AFI 48x10GbE SFP+ 6x40GbE

Name: Juniper QFX5100-48S-D-3AFI 48x10GbE SFP+ 6x40GbE
Brand: Juniper
SKU: QFX5100-48S-D-3AFI

QFX5100-48S-D-3AFI - Juniper QFX5100-48S-D-3AFI 48x10GbE SFP+ 6x40GbE | US IT Hardware

Product overview

The Juniper QFX5100-48S-D-3AFI is a high-performance 1U data center access switch delivering 1.44 Tbps switching capacity and 1.08 Bpps forwarding rate. It features 48 SFP+/SFP ports supporting 10GbE connectivity and 6 QSFP+ ports configurable as 40GbE uplinks or 4x10GbE breakout interfaces. The switch includes dual SFP/RJ-45 management ports, redundant fans, and dual AC power supplies with back-to-front airflow for efficient hot-aisle/cold-aisle deployment. With 288,000 MAC address table entries and latency as low as 550 nanoseconds, it supports demanding Layer 2 and Layer 3 operations. Ideal for spine-and-leaf architectures, virtual chassis deployments, and mixed 1GbE/10GbE/40GbE environments. Power consumption is 150W, making it energy-efficient for large-scale data center deployments.

48x10GbE SFP+ ports + 6x40GbE QSFP+ uplinks
1.44 Tbps switching capacity, 550ns latency
Redundant fans, dual PSU, dual management ports
1U form factor, 150W power consumption
288,000 MAC address table entries
Back-to-front airflow for hot-aisle deployment

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Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	QFX5100-48S-D-3AFI
Brand	Juniper
Condition	New
VLAN IDs	4094
Layer Support	Layer 2 and Layer 3
Junos OS Version	Junos 15.1X53-D10 and later
MAC Addresses Supported	288000

Network & Communication

Forwarding Rate	1440 Mpps
Switching Capacity	1920 Gbps

Compatible systems

No compatibility data found for exact SKU

Best for

Data Center Access Layer
Deploy as access switch in data center environments with 48 10GbE SFP+ ports connecting servers and storage. Supports 1.44 Tbps switching capacity for high-density compute clusters requiring low-latency connectivity.
Top-of-Rack (ToR) Deployment
Ideal for ToR installations with 6 QSFP+ ports providing 40GbE uplinks to spine switches or breakout to 24x10GbE for flexible aggregation. Back-to-front airflow design optimizes cooling in standard data center racks.
Spine-and-Leaf Architecture
Functions as leaf switch in modern fabric architectures with 48 access ports and 6 uplink ports. Supports Layer 3 routing with 550ns latency for high-performance east-west traffic patterns.
Virtual Chassis Fabric
Integrates into Juniper Virtual Chassis Fabric deployments for simplified management and scaling. Dual management ports and redundant power supplies ensure high availability in mission-critical environments.
Mixed-Speed Environments
Supports heterogeneous deployments with 1GbE SFP, 10GbE SFP+, and 40GbE QSFP+ ports. Flexible transceiver options enable gradual network upgrades without complete infrastructure replacement.

Frequently asked questions

Details

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Max Wattage	525 W
Power Supplies	Dual redundant DC

Depth	20 in (50.8 cm)
Width	17.5 in (44.5 cm)
Height	1.7 in (4.3 cm)
Weight	19.84 lb (9 kg)
Form Factor	1 RU rack-mountable

Operating Humidity	5% to 90% noncondensing
Storage Temperature	-40° to 70° C
Operating Temperature	0° to 40° C

QSFP+ Ports	6
Expansion Slots	6 QSFP+
10GbE SFP+ Ports	48

What are the uplink options for the QFX5100-48S-D-3AFI?

The switch includes 6 QSFP+ ports supporting 40GbE connections or 4x10GbE breakout configurations. This provides flexible uplink options: 6 ports at 40GbE for high-capacity aggregation, or up to 24 ports at 10GbE for distributed uplink scenarios. Each QSFP+ port can be independently configured.

What is the maximum switching capacity and throughput?

The QFX5100-48S-D-3AFI delivers 1.44 Tbps switching capacity with 1.08 Bpps forwarding rate. This non-blocking architecture ensures all 48 10GbE ports and 6 40GbE ports can operate simultaneously at full capacity without performance degradation or packet loss.

How does this switch handle redundancy and high availability?

The switch features redundant fans, dual AC power supplies, and dual management ports (one SFP, one RJ-45). These redundant components eliminate single points of failure, ensuring continuous operation in mission-critical data center environments without service interruption.

What is the latency performance of this switch?

The QFX5100-48S-D-3AFI achieves latency as low as 550 nanoseconds, making it suitable for latency-sensitive applications including high-frequency trading, real-time analytics, and virtualized workloads. This ultra-low latency is maintained across all switching modes.

Is this switch suitable for virtual chassis deployments?

Yes, the QFX5100-48S-D-3AFI supports Juniper Virtual Chassis Fabric, Virtual Chassis, Junos Fusion, and QFabric architectures. It can also be deployed in industry-standard spine-and-leaf and Layer 3 fabric topologies for flexible network design.

What are the power and cooling requirements?

Power consumption is 150W with dual AC power supplies. The switch features back-to-front airflow design optimizing cooling in standard hot-aisle/cold-aisle data center layouts. The compact 1U form factor (1.72 inches high) enables dense rack deployments with minimal thermal footprint.

How many devices can this switch support with its MAC address table?

The QFX5100-48S-D-3AFI supports up to 288,000 MAC address table entries, enabling large-scale deployments with thousands of connected servers, storage devices, and network endpoints without performance degradation or address table overflow.

Juniper QFX5100-48S-D-3AFI 48x10GbE SFP+ 6x40GbE

Product overview

Featuring

Network & Communication

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

Power Consumption

Physical Characteristics

Environmental

Interface/Ports