Juniper QFX5100-24Q-3AFI-T 40GbE Switch for Data Centers

Equipment Overview

The Juniper QFX5100-24Q-3AFI-T is a managed access and aggregation switch designed for data center environments, operating under Junos OS. It provides high-density 40GbE connectivity for leaf-and-spine topologies, enabling efficient traffic aggregation from servers and uplinks to spine switches. The model supports up to 32 QSFP+ ports with optional expansion modules, delivering a switching capacity of 2.56 Tbit/s. This 1U device is suitable for enterprise data centers requiring scalable, high-throughput network infrastructure.

Main Parameters

• Ports: 24 QSFP+ 40GbE (up to 32 with optional modules); breakout support to 4×10GbE per port
• Switching Capacity: 2.56 Tbit/s
• Form Factor: 1U rack-mountable (19-inch)
• Power Supply: AC (model suffix -afi)
• Operating System: Junos OS
• Primary Role: Leaf switch in spine-leaf architecture; access/aggregation for 40GbE server traffic

Key Advantages

This model is selected for enterprise deployments due to its flexible port density expansion and native 40GbE throughput, reducing the need for oversubscription in high-bandwidth environments. The QSFP+ breakout capability allows seamless integration with existing 10GbE server infrastructure, providing investment protection. Junos OS ensures consistent configuration and automation across the network, simplifying operations in large-scale data centers.

Compatibility & Integration

The switch supports standard QSFP+ optics and breakout cables for port splitting, ensuring compatibility with industry-standard 40GbE and 10GbE equipment. It is designed for integration into Juniper-based spine-leaf networks, with Junos OS enabling interoperable routing and switching protocols. The device installs into standard 19-inch racks and pairs with existing data center power and cooling systems.