Juniper QFX5200-32C-AFO2 32-Port 100GbE QSFP28 Layer 3 Data Center Spine Switch

The Juniper QFX5200-32C-AFO2 is a 32-port 100GBASE-X QSFP28 Layer 3 managed switch with redundant fans, dual AC power supplies, and front-to-back (AFO) airflow — the dual-PSU AFO variant of the QFX5200-32C platform delivering 3.2 Tbps of 100G switching capacity with built-in power redundancy for data center spine and leaf IP fabric deployments.

Key Features

• 32 x 100GbE QSFP28 ports for 3.2 Tbps switching in 1U
• Dual redundant AC power supplies and redundant fans for N+1 power and cooling
• Front-to-back (AFO) airflow for standard hot-aisle/cold-aisle data center rack configurations
• Full EVPN/VXLAN for IP fabric spine and leaf with Junos OS
• MACsec on all 32 QSFP28 ports for link-layer fabric encryption

Product Specifications

• Part Number: QFX5200-32C-AFO2
• Manufacturer: Juniper Networks
• Ports: 32 x 100GbE QSFP28
• Switching Capacity: 3.2 Tbps
• Forwarding Rate: 2,380 Mpps
• Power Supplies: 2 x AC (redundant)
• Airflow: AFO (Front-to-Back)
• Form Factor: 1U Rack-mountable

Switch & Port Specifications

• MAC Address Table: 288,000 entries
• VLAN Support: 4,094 VLANs
• Breakout: 4x25GbE or 4x10GbE per QSFP28 port
• Jumbo Frames: 9,216 bytes
• Fan: Redundant hot-swap fan modules
• PSU Redundancy: N+1 with dual AC PSUs

Network & Protocol Specifications

• Routing: OSPFv2/v3, BGP, IS-IS, VRRP, ECMP
• EVPN/VXLAN: Full EVPN Type 2/3/5 with VXLAN for data center fabric
• Multicast: PIM SM/SSM, IGMP v1/v2/v3
• Security: ACLs, MACsec (IEEE 802.1AE) on all ports, DHCP snooping
• Management: Junos OS CLI, NETCONF, gRPC telemetry, OpenConfig

Use Cases

• 100GbE spine switch in Juniper IP fabric requiring dual-PSU power redundancy
• High-density 100G leaf switch for 25G server breakout via QSFP28 fan-out cables
• EVPN/VXLAN fabric spine with N+1 redundant power for mission-critical data centers
• Replacement or complement to QFX5200-32C-AFO in redundant-PSU rack deployments

Compatibility

• Standard QSFP28 100G optics, QSFP+ 40G (via adapter), and DAC/AOC cables
• EVPN/VXLAN interoperable with EX4650, QFX5110, QFX5120 leaf switches
• AFO airflow — match with AFO PSUs and fan trays for thermal consistency
• Managed via Junos OS, Juniper Apstra, and gRPC/OpenConfig for automation

Frequently Asked Questions

What is the difference between QFX5200-32C-AFO2 and QFX5200-32C-AFO?

The QFX5200-32C-AFO2 includes dual redundant AC power supplies and redundant fan modules as standard, providing N+1 power and cooling redundancy. The QFX5200-32C-AFO is the single-PSU base model. The AFO2 variant is recommended for mission-critical deployments where power supply redundancy is required.

Can QFX5200-32C-AFO2 ports be broken out to 25GbE?

Yes — each QSFP28 port supports 4x25GbE breakout via QSFP28-to-4xSFP28 breakout cables, enabling up to 128 x 25GbE connections from a single QFX5200-32C-AFO2 for high-density 25G server or leaf aggregation applications.

Does the QFX5200-32C-AFO2 support MACsec encryption?

Yes — MACsec (IEEE 802.1AE) is supported on all 32 QSFP28 ports for link-layer encryption of inter-switch fabric traffic, providing in-flight data protection for security-sensitive data center deployments.

The Juniper QFX5200-32C-AFO2 delivers 3.2 Tbps of 100GbE switching with dual-PSU N+1 redundancy, redundant fans, full EVPN/VXLAN, MACsec, and Junos OS automation in a compact 1U AFO-airflow form factor — the power-redundant QFX5200-32C choice for mission-critical data center spine and leaf IP fabric deployments.