Name: QFX5120-48Y-D-AFI2 Juniper 48x 25GbE SFP28 8x 100GbE QSFP28 Switch
Brand: Juniper Networks
SKU: QFX5120-48Y-D-AFI2
Price: 12894.00 USD
Availability: InStock
Rating: 4.8 (118 reviews)

Product Overview
The QFX5120-48Y-D-AFI2 switch provides robust 25GbE edge connectivity combined with 100GbE uplinks, fitting seamlessly into data center and enterprise network layers. It offers a balance of port density and performance, suitable for environments requiring scalable, efficient switching without unnecessary complexity.

General Information
Brand	Juniper Networks
Condition	Refurbished

Technical Information
Switch Type	Layer 3, Managed Switch, Stackable Switch
Form Factor	Rack-Mountable
Mount Type	1U Rack
Switch Ports	48
Number of Ports	48-Ports
Port Type	25G SFP28, 40G QSFP+, 100G QSFP28, SFP+, USB Console, Serial Console (RJ-45)
Port Speed	25Gbps,100Gbps,40Gbps,10Gbps
UpLink Ports	8
POE Support	No
Switching Capacity	4 Tbps
Switch Forwarding Rate	5.95 Mpps
DRAM	8 GB
Flash Memory	16 GB
VLAN Support	Yes
Max VLANs Supported	4094
Stackable	Yes
Layer Support	Layer 3
Connector Type	SFP28,QSFP28,USB Console,Serial Console (RJ-45)

Performance
Latency	<2 µs
Jumbo Frame Support	Up To 9216 Bytes
MAC Address Table Size	160000

Management and Configuration
Routing Protocols	Static, RIP, OSPF, OSPFv3, BGP, VRRP, PIM-SM, IGMP
Remote Protocols	Yes
Management Interfaces	Junos CLI,SSH,SNMP,NETCONF,REST API,Web UI,Console (RJ-45/USB)
Security Features	802.1X,ACLs,MAC limiting,DHCP Snooping,IP Source Guard,RADIUS/TACACS+,DoS protection
Management Type	Junos OS (managed)
Remote Management Protocol	SSH,SNMP,NETCONF,REST API,HTTPS
Routing Protocol	Junos OS

Power & Cooling
Fans	Redundant hot-swappable fans (front-to-back)
Power Supply	Dual hot-swappable AC power supplies (field-replaceable)

Physical Characteristics
Dimensions	1.72 x 17.36 x 18.85 in
Weight	3.00
Operating Temperature	0°C to 40°C

Miscellaneous
Assembly Required	No
Compliance Standards	WEEE, RoHS, CE, FCC, UL, cULus

Product Description
The QFX5120-48Y-D-AFI2 is a high-performance switch built to deliver scalable 25GbE connectivity alongside 100GbE uplinks. It is commonly found in environments requiring dense aggregation and leaf-spine architectures, such as modern data centers and enterprise networks. Network engineers and IT professionals use this switch to balance high throughput with flexible port configurations. Key Features Offers a total of 48 SFP28 ports for 25GbE connections and 8 QSFP28 ports for 100GbE links. Supports advanced Layer 2 and Layer 3 protocols for versatile network integration. Utilizes a compact 1RU chassis to optimize rack space in dense deployments. Built with efficient power and cooling to maintain reliability in continuous operation. Includes automation-ready features to simplify network management and scaling. This switch plays a crucial role in maintaining smooth network traffic flow and high availability. Its balanced design between port density and uplink capacity fits well in infrastructures demanding both speed and flexibility. Reliable performance and straightforward integration make it a practical choice for networks that evolve with growing data needs.

Use Cases
This switch is typically deployed where mid-to-large scale networks need high-speed aggregation and leaf layer interconnects. It benefits environments with intensive data throughput and flexible port requirements. How It's Used: Aggregating 25GbE server connections in data center leaf-spine topologies. Providing uplink capacity to core switches or routers with 100GbE QSFP28 ports. Supporting virtualization platforms requiring low-latency, high-bandwidth switching. Integrating with campus networks that demand scalable 25GbE access layers. Enabling automation and orchestration in large-scale IT infrastructures. By supporting varied port speeds and advanced protocols, this switch enhances operational efficiency and network scalability. It's designed to meet throughput demands while simplifying network growth and management in complex IT environments.