Juniper

Juniper QFX5100-48S-AFO 48x10GbE 6x40GbE Ethernet Switch

Name: Juniper QFX5100-48S-AFO 48x10GbE 6x40GbE Ethernet Switch
Brand: Juniper
SKU: QFX5100-48S-AFO
Price: 1048 USD
Availability: InStock

MPN: QFX5100-48S-AFO·By: Juniper

Part #:QFX5100-48S-AFORefurbishedIn stock

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Juniper QFX5100-48S-AFO 48x10GbE 6x40GbE Ethernet Switch-

$1,048.00

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Product overview

The Juniper QFX5100-48S-AFO is a compact 1U datacenter access switch delivering high-performance Layer 2/3 connectivity. It features 48 SFP+/SFP ports supporting 1GbE and 10GbE (expandable to 72 10GbE ports with breakout cables) plus 6 QSFP+ ports for 40GbE uplinks. With 1.44 Tbps switching capacity and 1.08 Bpps forwarding rate, it handles demanding traffic patterns efficiently. The switch runs Juniper Junos OS, providing consistent control plane features across infrastructure. Built-in Insight Technology enables microburst monitoring and hotspot visibility. Front-to-back airflow design supports hot-aisle/cold-aisle deployments. Redundant fans and AC power supplies ensure high availability. MAC address table supports 288,000 entries for diverse network configurations. Ideal for data center access and aggregation layers requiring low-latency, flexible deployment.

1.44 Tbps switching capacity with 1.08 Bpps forwarding rate
48x 10GbE SFP+ ports expandable to 72 with breakout cables
6x 40GbE QSFP+ uplink ports for high-speed aggregation
150W power consumption with redundant AC power supplies
Juniper Junos OS with Insight Technology monitoring
1U rackmount form factor with front-to-back airflow

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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-AFO
Brand	Juniper
Condition	Refurbished
EMC	FCC 47CFR Part 15 Class A, EN 55022 Class A
Model	QFX5100-48S-AFO
Safety	CAN/CSA-C22.2 No. 60950-1-07, UL 60950-1, EN 60950-1
Product Line	QFX5100 Series
Product Type	Ethernet Switch
Operating System	JUNOS

Network & Communication

Latency	550 ns
Throughput	1.08 Bpps
Switching Capacity	14.4 Tbit/s

Power Consumption

Max Wattage	150 W
Power Supplies	Dual hot-swappable AC/DC
Power Consumption	150 W

Physical Characteristics

Depth	20 in (50.8 cm)
Width	17.45 in (44.32 cm)
Height	1.75 in (4.45 cm)
Weight	9.9 kg
Rack Units	1U
Form Factor	1U rackmount

Environmental

Airflow Direction	Front-to-Back
Operating Humidity	5% to 90% non-condensing
Storage Temperature	-40° to 70° C
Operating Temperature	0° to 40° C

Interface/Ports

Console Port	1x RJ-45
1 GbE SFP Ports	48 (24 copper 1 GbE)
Management Port	1x RJ-45
10 GbE SFP+ Ports	48/72 with breakout cable
40 GbE QSFP+ Ports	6

Warranty & Support

MTBF	293,000 hours

Compatible systems

No specific compatibility lists found in available sources

Best for

Data Center Access Layer
Provides 48 10GbE ports for server connectivity with 6 40GbE uplinks to aggregation switches. Supports up to 72 10GbE ports with breakout cables for maximum port density in compact 1U form factor.
Cloud Infrastructure
Delivers 1.44 Tbps switching capacity and 1.08 Bpps throughput for virtualized environments. Junos OS integration enables consistent multi-vendor infrastructure management across cloud deployments.
High-Performance Computing
550ns latency and 288,000 MAC address table support demanding HPC workloads. Insight Technology microburst monitoring identifies performance bottlenecks in real-time.
Storage Area Networks
40GbE QSFP+ ports enable high-speed storage connectivity. Flexible interface options support both fiber and copper connections for diverse SAN architectures.
Virtual Chassis Deployments
Supports Juniper Virtual Chassis architecture for simplified management and operation. Enables plug-and-play scalable fabric deployments without additional management overhead.

Frequently asked questions

What is the maximum port density achievable with the QFX5100-48S-AFO?

The switch provides 48 10GbE SFP+ ports and 6 40GbE QSFP+ ports in standard configuration. Using breakout cables, the 10GbE ports expand to 72 ports, delivering up to 78 total 10GbE-equivalent ports. This enables maximum server connectivity in a compact 1U form factor.

How does the QFX5100-48S-AFO handle power consumption in large deployments?

Power consumption is only 150W, significantly lower than competing switches. Redundant AC power supplies ensure continuous operation during maintenance. Low power draw reduces cooling requirements and operational costs, making it ideal for large-scale datacenter deployments where energy efficiency directly impacts profitability.

What operating system does the QFX5100-48S-AFO run?

The switch runs Juniper Junos OS, the same operating system used across Juniper routers, EX Series switches, and SRX Services Gateways. This ensures consistent control plane features and simplified management across heterogeneous Juniper infrastructure deployments.

Can the QFX5100-48S-AFO be deployed in Virtual Chassis architecture?

Yes, the switch supports Juniper Virtual Chassis architecture, enabling multiple switches to operate as a single logical entity. This simplifies management and operation while providing plug-and-play scalability for growing datacenter environments without additional management overhead.

What monitoring and visibility features are included?

Built-in Insight Technology provides microburst monitoring and hotspot statistics for real-time performance visibility. These features enable IT teams to identify traffic bottlenecks, optimize network performance, and troubleshoot issues proactively without additional monitoring tools.

Is the QFX5100-48S-AFO suitable for hot-aisle/cold-aisle deployments?

Yes, the AFO model features front-to-back airflow design specifically optimized for hot-aisle/cold-aisle datacenter deployments. This airflow configuration improves cooling efficiency and reduces energy consumption in modern datacenter architectures.

What is the MAC address table capacity?

The MAC address table supports 288,000 entries, enabling the switch to handle diverse network configurations and large-scale deployments without performance degradation or security reduction. This capacity supports complex multi-VLAN environments and extensive network topologies.

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Manufacturer part #

QFX5100-48S-AFO

Brand

Juniper

Condition

Refurbished

EMC

FCC 47CFR Part 15 Class A, EN 55022 Class A

Model

QFX5100-48S-AFO

Safety

CAN/CSA-C22.2 No. 60950-1-07, UL 60950-1, EN 60950-1

Product Line

QFX5100 Series

Product Type

Ethernet Switch

Operating System

JUNOS

Latency

550 ns

Throughput

1.08 Bpps

Switching Capacity

14.4 Tbit/s

Max Wattage

150 W

Power Supplies

Dual hot-swappable AC/DC

Power Consumption

150 W

Depth

20 in (50.8 cm)

Width

17.45 in (44.32 cm)

Height

1.75 in (4.45 cm)

Weight

9.9 kg

Rack Units

Form Factor

1U rackmount

Airflow Direction

Front-to-Back

Operating Humidity

5% to 90% non-condensing

Storage Temperature

-40° to 70° C

Operating Temperature

0° to 40° C

Console Port

1x RJ-45

1 GbE SFP Ports

48 (24 copper 1 GbE)

Management Port

1x RJ-45

10 GbE SFP+ Ports

48/72 with breakout cable

40 GbE QSFP+ Ports