Juniper EX4650 Series 48-Ports 1/10/25GBASE-X SFP28 Layer 3 Rack-mountable Managed Front-to-back Airflow Network Switch with 8-Ports QSFP28 – EX4650-48Y-AFO

Juniper EX4650-48Y-AFO 48-Port 25GbE SFP28 Layer 3 Data Center Access Switch

The Juniper EX4650-48Y-AFO is a 48-port 1/10/25GbE SFP28 Layer 3 managed switch with 8 x 100GbE QSFP28 uplinks and front-to-back airflow — engineered for high-density 25G server connectivity in data center access and top-of-rack deployments with full Junos OS L3 routing and Juniper Mist cloud management.

Key Features

• 48 x 1/10/25GbE SFP28 server-facing ports for 25G top-of-rack connectivity
• 8 x 100GbE QSFP28 uplink ports for high-bandwidth spine connectivity
• Front-to-back (AFO) airflow for standard hot-aisle/cold-aisle data center racks
• Full Layer 3 routing — OSPF, BGP, EVPN for data center leaf deployments
• Juniper Mist AI-driven wired assurance for cloud-managed data center operations

Product Specifications

• Part Number: EX4650-48Y-AFO
• Manufacturer: Juniper Networks
• Access Ports: 48 x 1/10/25GbE SFP28
• Uplink Ports: 8 x 100GbE QSFP28
• Switching Capacity: 1.76 Tbps
• Forwarding Rate: 1,309 Mpps
• Form Factor: 1U Rack-mountable

Switch & Port Specifications

• MAC Address Table: 288,000 entries
• VLAN Support: 4,094 VLANs
• Jumbo Frames: 9,216 bytes
• PoE: No (non-PoE model — see EX4650 DC variant for DC power)
• Redundancy: Redundant AC PSU support
• Airflow: AFO (Front-to-Back)

Network & Protocol Specifications

• Routing: OSPFv2/v3, BGP, IS-IS, VRRP, static routing
• EVPN/VXLAN: Full EVPN Type 2/3/5 with VXLAN for data center fabric
• Multicast: PIM SM/SSM, IGMP v1/v2/v3
• Security: 802.1X, ACLs, DHCP snooping, MACsec on uplink ports
• Management: Junos OS CLI, NETCONF, SNMP, Juniper Mist

Use Cases

• 25GbE top-of-rack server access switching in Juniper data center leaf deployments
• EVPN/VXLAN leaf switch in IP fabric data center architectures with 100G spine uplinks
• High-density 25G SFP28 server connectivity replacing 10G ToR switches for future-ready access
• Juniper Mist AI-managed data center access for unified wired operations

Compatibility

• Standard SFP28 25G and QSFP28 100G optics and DAC/AOC cables
• EVPN/VXLAN compatible with Juniper QFX5120 and QFX5200 spine switches
• Managed via Juniper Mist cloud platform for AI-driven data center wired assurance
• AFO airflow — match with AFO fan trays and PSUs for thermal consistency

Frequently Asked Questions

What is the difference between EX4650-48Y-AFO and EX4650-48Y-DC-AFO?

Both are 48-port 25GbE SFP28 switches with front-to-back airflow, but differ in power input. The EX4650-48Y-AFO uses standard AC power, while the EX4650-48Y-DC-AFO uses DC power input for data centers with DC power distribution — such as telecom facilities and some carrier-grade data centers.

Does the EX4650-48Y-AFO support EVPN/VXLAN for data center fabric deployments?

Yes — the EX4650-48Y-AFO supports full EVPN Type 2, Type 3, and Type 5 routes with VXLAN encapsulation for IP fabric data center architectures. It operates as a leaf switch in Juniper IP fabric designs with QFX5120 or QFX5200 spine switches.

Can 10GbE SFP+ devices connect to the EX4650-48Y-AFO”s SFP28 ports?

Yes — the EX4650-48Y-AFO SFP28 ports are backward compatible with 1GbE SFP and 10GbE SFP+ transceivers, enabling mixed-speed connectivity on the same switch for environments transitioning from 10G to 25G server connectivity.

The Juniper EX4650-48Y-AFO delivers 25GbE top-of-rack density with 100G spine uplinks, full EVPN/VXLAN data center fabric support, and Juniper Mist AI management — providing the high-bandwidth, cloud-managed leaf switch platform that modern 25G data center access and IP fabric deployments require.