Juniper QFX5110-32Q-AFO | 32-Port QSFP+ 40G 4x QSFP28 100G Switch

Juniper QFX5110-32Q-AFO: High-Density 40GbE/100GbE Aggregation for Spine and Layer 3 Fabrics

At a Glance: High-Bandwidth Leaf/Spine Switching

• 32 × QSFP+ ports supporting 40GbE
• QSFP28 support for 100GbE uplinks (select ports)
• Breakout support for 4×10GbE or 4×25GbE fan-out per port
• Reverse airflow (AFO) for data centers using back-to-front cooling
• EVPN-VXLAN L2/L3 gateway for multi-tenant fabric scaling
• Broadcom Trident II+ ASIC delivering low latency and wire-speed forwarding
• MPLS, L3VPN, IS-IS, OSPF, BGP for converged DC + WAN/metro designs
• MACsec, telemetry, ZTP, Python automation via Junos OS

High-Performance Switching Engine

• Up to 2.56 Tbps switching capacity
• Up to 1.4 Bpps forwarding performance
• Sub-microsecond latency ideal for spine or high-performance leaf tiers
• Deep buffer architecture for bursty east-west and storage traffic

Flexible Port Configuration for Modern Fabrics

• 40GbE native across all QSFP+ ports
• 100GbE supported on select QSFP28-capable ports
• Breakout options:
  • 40GbE → 4×10GbE
  • 100GbE → 4×25GbE
• Up to 128 × 10GbE or 128 × 25GbE via breakout

Automation, Telemetry & Junos Intelligence

• Zero Touch Provisioning (ZTP) for rapid, consistent deployment
• Junos Telemetry Interface (JTI) for real-time analytics
• Python scripting, REST APIs, NETCONF/YANG
• Ansible & Junos Space integration

EVPN-VXLAN, MPLS & Advanced Fabric Integration

• EVPN-VXLAN L2/L3 gateway for multi-tenant data centers
• MPLS, L3VPN, RSVP-TE, Segment Routing* (model/RE dependent)
• BGP, IS-IS, OSPF, ECMP for scalable IP underlays
• Robust QoS and deep buffers

Security & Reliability Features

• MACsec encryption for secure 10/40/100GbE links
• DHCP snooping, DAI, CoPP for edge protection
• Redundant, hot-swappable PSUs and fans
• Reverse airflow (AFO) for thermal consistency

Ideal Use Cases

Spine in Leaf-Spine Architectures

High-Bandwidth Leaf Nodes

Private/Hybrid Cloud Fabrics

Metro Ethernet & Service Provider Edge

Optics & Connectivity Options

• QSFP+ 40GbE: SR4, LR4, AOC, DAC
• QSFP28 100GbE: SR4, LR4, PSM4, CWDM4
• Breakout DAC/AOC cables for 4×10GbE and 4×25GbE

How It Stacks Up Against Other Juniper Models

• QFX5110-48S-AFO vs QFX5110-32Q-AFO: The 48S-AFO offers dense 10GbE access with 100GbE uplinks, while the 32Q-AFO targets high-bandwidth 40/100GbE aggregation and spine roles.
• QFX5120-48Y-AFO vs QFX5110-32Q-AFO: The QFX5120 family introduces 25GbE access with 100GbE uplinks, making it ideal for newer 25G/100G environments, while the QFX5110-32Q-AFO is optimized for 40GbE-heavy fabrics with breakout flexibility.
• QFX5100 Series vs QFX5110-32Q-AFO: QFX5110 adds MACsec, enhanced EVPN-VXLAN functionality, more automation features, and higher uplink bandwidth over the older QFX5100.
• QFX5200-32C vs QFX5110-32Q-AFO: QFX5200 supports high-density 100GbE with newer Broadcom Tomahawk ASICs, while the 32Q-AFO balances 40GbE aggregation with cost efficiency and breakout versatility.
• QFX10002-36Q vs QFX5110-32Q-AFO: The QFX10002-36Q is designed for core and spine roles at massive scale with deep buffers and heavy routing capabilities, whereas the QFX5110-32Q-AFO is ideal for mid-sized fabrics and high-performance leaf/spine deployments.

Juniper QFX Series Reference Guides

• Juniper QFX vs EX Series Comparison – Choosing the Right Platform
• QFX5100 vs QFX5110 vs QFX5200 – Full Data Center Comparison Guide

A Spine-Grade Switching Platform for Modern Fabrics

• Product Type: Ethernet Switch
• Manufacturer Part Number: QFX5110-32Q-AFO
• Power Source: Power Supply
• Limited Warranty: 1 Year
• Layer Supported: 2
• Weight (Approximate): 24.60 lb
• Manufacturer: Juniper Networks, Inc
• Product Model: QFX5110-32Q
• Network Technology: 100GBase-X
• Product Series: QFX
• Brand Name: Juniper
• Expansion Slot Type: QSFP+
• Height: 1.7″
• Width: 17.4″
• Depth: 20.5″
• Manageable: Yes
• Environmentally Friendly: Yes
• Environmental Certification: Green Dot
• Ethernet Technology: 100 Gigabit Ethernet
• Number of Total Expansion Slots: 32
• Modular: Yes
• Media Type Supported: Optical Fiber
• Shared SFP Slot: No
• Port/Expansion Slot Details : 4 x 100 Gigabit Ethernet Expansion Slot

• 1-Year BrightStar warranty for end user customers
• 90-Day BrightStar Warranty for resellers

• Free FedEx Ground shipping within the United States
• FedEx Overnight shipping available as well
• FedEx International Shipping available for customers outside of the United States

Q: What types of ports are available on the QFX5110-32Q-AFO?
A: This switch is equipped with 32x 40GbE QSFP+ ports, with support for 4x 100GbE QSFP28 interfaces for high-speed data connections.

Q: What is the airflow direction of the QFX5110-32Q-AFO?
A: The airflow is airflow-out (AFO), meaning the air moves from the back (exhaust side) to the front (port side), making it ideal for environments with back-to-front cooling.

Q: Does the QFX5110-32Q-AFO support Layer 3 routing?
A: Yes, it supports both Layer 2 and Layer 3 networking features, making it suitable for advanced routing and switching requirements.

Q: What environments is the QFX5110-32Q-AFO best suited for?
A: The QFX5110-32Q-AFO is perfect for data centers, enterprise networks, and cloud infrastructure environments that require high performance, scalability, and reliable cooling.

Q: Is this switch suitable for virtualized networks?
A: Yes, the QFX5110-32Q-AFO supports VXLAN and other virtualization technologies, enabling seamless integration into virtualized network environments.