Juniper

Juniper QFX5100-24Q-3AFO Switch

Name: QFX5100-24Q-3AFO - Juniper QFX5100-24Q-3AFO Switch
Brand: Juniper
SKU: QFX5100-24Q-3AFO
Price: 902 USD
Availability: InStock

MPN: QFX5100-24Q-3AFO·By: Juniper

Part #:QFX5100-24Q-3AFORefurbishedIn stock

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QFX5100-24Q-3AFO - Juniper QFX5100-24Q-3AFO Switch-

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Product overview

The Juniper Networks QFX5100-24Q-3AFO is a purpose-built data center switch optimized for high-density 40GbE environments, featuring 24 QSFP+ ports that support native 40Gbps or 4x10GbE breakout cables, with two expansion slots enabling up to 32 QSFP+ ports for flexible scalability. It provides 2.56 Tbps full-duplex switching capacity and 1.44 Bpps forwarding rate, ensuring wire-speed performance with sub-microsecond latency ideal for spine/leaf architectures. Rich Layer 2/3 features include 288K MAC addresses, 128K IPv4 routes, 4K firewall filters, and advanced QoS for storage, video, and HPC workloads. Dual redundant hot-pluggable AC power supplies and fans support front-to-back airflow for hot/cold aisle deployments. Integrated Junos OS offers zero-touch provisioning, unified management across fabric topologies like Virtual Chassis Fabric and QFabric, plus microburst detection for proactive troubleshooting in mission-critical data centers.

2.56 Tbps full-duplex switching capacity.
24 QSFP+ ports expandable to 32 total.
1.44 Bpps forwarding rate with low latency.
Supports 40GbE native or 4x10GbE breakout.
288,000 MAC address table capacity.
Redundant hot-swap PSU and fans included.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
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 #	QFX5100-24Q-3AFO
Brand	Juniper
Condition	Refurbished
Model	QFX5100-24Q-3AFO
Jumbo Frame	9,216 bytes
FCoE Support	4,095 VLANs/FC fabrics
Product Line	QFX Series
Product Type	Data Center Ethernet Switch
Layer 2 Features	STP/MSTP/VSTP, LACP, LLDP, VLAN translation
Layer 3 Features	Static routing, routing policy, IPv4/IPv6

Network & Communication

MAC Addresses	288,000
Forwarding Rate	1.44 Bpps
Firewall Filters	4,000
Switching Capacity	2.56 Tbps full duplex
IPv4 Unicast Routes	128,000 prefixes; 208,000 host routes
IPv4 Multicast Routes	104,000 (52,000 IPv6)

Power Consumption

Power Supplies	Redundant hot-pluggable AC
Power Consumption	175W (QFX5100-24Q-AA-AFO)

Physical Characteristics

Dimensions	Data center optimized 1U
Form Factor	1U rackmount

Environmental

Fans	Redundant N+1 hot-pluggable
Airflow	Front-to-back
Operating Temperature	0° to 40° C

Interface/Ports

Ports	24x QSFP+ (40GbE), expandable to 32x QSFP+
LAG Ports	32 ports per LAG
Management Ports	2x (SFP/RJ-45)

Compatible systems

Native integration with Juniper QFX fabric architectures; supports standard QSFP+ transceivers and Junos ecosystem.

Juniper QFX Series
Model: QFX5100
Form factor: 1U
Generation: 1st
Virtual Chassis Fabric interoperable

Best for

Data Center Spine
High-density 40GbE interconnect for spine layer in Clos fabrics handling east-west traffic at wire speed.
Top-of-Rack Leaf
Server access with 10GbE breakout from QSFP+ ports for rack-scale virtualization and storage.
HPC Clustering
Low-latency 40GbE fabric for high-performance computing clusters with RDMA over Converged Ethernet support.
Cloud Provider Aggregation
Multi-tenant aggregation switch with Virtual Chassis Fabric for scalable OpenStack/Nova deployments.
IP Fabric Leaf
EVPN-VXLAN overlay termination in BGP-based IP fabrics for containerized microservices.
Storage Networking
FCoE-enabled access for unified storage fabrics with 4,095 FCoE VLANs and DCB support.

Frequently asked questions

What port configuration does the QFX5100-24Q-3AFO provide?

Base unit includes 24 QSFP+ ports for 40GbE, expandable to 32 QSFP+ with 2x QFX-EM-4Q modules; each QSFP+ supports 4x10GbE SFP+ breakout cables for up to 96/104 10GbE interfaces. Dual SFP/RJ-45 management ports enable out-of-band access.

What is the switching performance of this model?

Delivers 2.56 Tbps full-duplex switching capacity and 1.44 Bpps forwarding rate across all ports simultaneously in non-blocking mode. Supports cut-through and store-and-forward with jumbo frames up to 9,216 bytes for high-throughput data center applications.

What Layer 2/3 scaling limits are supported?

288K MAC addresses, 128K IPv4 unicast prefixes (208K host routes), 104K IPv4 multicast, 64K IPv6 unicast, 48K ARP entries, 32 ports per LAG, 4K firewall filters, and 4,095 FCoE VLANs for large-scale fabrics.

Is front-to-back airflow supported?

Yes, QFX5100-24Q-3AFO specifically features front-to-back airflow with redundant N+1 hot-pluggable fans and AC power supplies rated at 175W, optimized for standard hot aisle/cold aisle data center deployments.

What management features are included?

Runs Junos OS with zero-touch provisioning (ZTP), Virtual Chassis Fabric support, Insight Technology for microburst/hotspot analytics, sFlow sampling, and unified CLI/GUI management across QFabric, EVPN-VXLAN, and Junos Fusion topologies.

Can it integrate with Juniper fabric architectures?

Supports QFabric Node, Virtual Chassis Fabric satellite device, and Junos Fusion fabric, enabling scale-out topologies up to thousands of ports with single-pane management for spine/leaf and super-spine designs.

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Manufacturer part #

QFX5100-24Q-3AFO

Brand

Juniper

Condition

Refurbished

Model

QFX5100-24Q-3AFO

Jumbo Frame

9,216 bytes

FCoE Support

4,095 VLANs/FC fabrics

Product Line

QFX Series

Product Type

Data Center Ethernet Switch

Layer 2 Features

STP/MSTP/VSTP, LACP, LLDP, VLAN translation

Layer 3 Features

Static routing, routing policy, IPv4/IPv6

MAC Addresses

288,000

Forwarding Rate

1.44 Bpps

Firewall Filters

4,000

Switching Capacity

2.56 Tbps full duplex

IPv4 Unicast Routes

128,000 prefixes; 208,000 host routes

IPv4 Multicast Routes

104,000 (52,000 IPv6)

Power Supplies

Redundant hot-pluggable AC

Power Consumption

175W (QFX5100-24Q-AA-AFO)

Dimensions

Data center optimized 1U

Form Factor

1U rackmount

Fans

Redundant N+1 hot-pluggable

Airflow

Front-to-back

Operating Temperature

0° to 40° C

Ports

24x QSFP+ (40GbE), expandable to 32x QSFP+

LAG Ports

32 ports per LAG

Management Ports

2x (SFP/RJ-45)