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S4B21A HPE 18x 25G SFP28 4x 100G QSFP28 2x SFP+ Network Switch

SKU:

S4B21A

Weight: 3.00 lbs
Condition: Refurbished
  • Supports 18 ports of 25G SFP28 for high-density 25 Gigabit connections
  • Includes 4 QSFP28 ports delivering up to 100G per port for uplinks or aggregation
  • Offers 2 SFP+ ports for 10 Gigabit connectivity or legacy device support
  • Designed for flexible, scalable data center and enterprise network environments
Product Overview

The S4B21A switch integrates multiple high-speed interfaces to deliver flexible connectivity in data centers and enterprise networks. It combines 25G, 100G, and 10G ports to accommodate a range of devices and traffic patterns without compromising performance or compatibility.

General Information
Brand HPE
Condition Refurbished
Technical Information
Switch Type Layer 3, Managed Switch, Stackable Switch
Form Factor Rack-Mountable
Mount Type 1U Rack
Switch Ports SFP28,SFP+,QSFP28
Number of Ports 24-Ports
Port Type 10G SFP+, 25G SFP28, 100G QSFP28, USB Console, Serial Console (RJ-45)
Port Speed 25G,100G,10G
UpLink Ports 4x100G QSFP28,2x10G SFP+
POE Support No
Switching Capacity 1.74 Tbps
Switch Forwarding Rate 3398 Mpps (64-byte)
VLAN Support Yes
Max VLANs Supported 1-4094
Stackable Yes
Layer Support Layer 3
Connector Type SFP28,SFP+,QSFP28,Serial Console (RJ-45),USB Console
Performance
Jumbo Frame Support Up To 9216 Bytes
Management and Configuration
Routing Protocols Static, RIP, OSPF, BGP, VRRP, PIM-SM, IGMP
Remote Protocols Yes
Management Interfaces CLI (SSH),Web GUI,SNMP,REST API,Console (RJ-45)
Security Features Access Control Lists (ACLs),802.1X,MAC Authentication,SSH,SSL
Management Type Managed
Remote Management Protocol SNMPv1/v2c/v3,SSH,Telnet,REST API
Routing Protocol Static,OSPF,BGP,VRRP
Physical Characteristics
Weight 3.00
Operating Temperature 0°C to 40°C
Miscellaneous
Assembly Required No
Compliance Standards WEEE, RoHS, CE, FCC, cULus


Product Description

The S4B21A network switch provides a versatile combination of 25G, 100G, and 10G connectivity options suitable for modern data center and enterprise networks. It is commonly found in network deployments that require dense aggregation of high-speed connections alongside legacy support.

Built for IT professionals managing scalable network infrastructures, this switch enables smooth integration across various network segments. Network architects and administrators benefit from its port diversity and performance consistency.

Key Features

  • High port density with 18 x 25G SFP28 ports for efficient server and access connections
  • Four 100G QSFP28 ports to handle uplink and core network traffic with substantial bandwidth
  • Dual SFP+ ports that maintain compatibility with existing 10G equipment
  • Robust hardware supporting low latency and high throughput for demanding network environments
  • Flexible port configurations accommodating various cabling and transceiver types

This switch plays a fundamental role in infrastructure by enabling seamless network expansion and consolidation. Its stable performance ensures reliable throughput for diverse workloads.

With balanced port speeds and modern interfaces, it meets the evolving needs of network environments requiring both speed and adaptability.


Use Cases

This switch is typically deployed in data centers and large enterprise networks where mixed-speed connectivity is necessary. It fits environments demanding high throughput, scalability, and integration with legacy equipment. Network teams aiming to optimize traffic flow and port utilization find this product essential.

How It's Used:

  • Aggregating server connections in virtualization environments using 25G SFP28 ports
  • Serving as core or aggregation switch with 100G QSFP28 uplinks in high-performance networks
  • Supporting legacy 10G devices or management interfaces through SFP+ ports
  • Enabling flexible network segmentation in cloud and hybrid data center setups
  • Scaling high-density environments requiring mixed speed capabilities without replacing existing infrastructure

By offering diverse port options and reliable performance, the S4B21A switch supports efficient network scaling and traffic management. It aligns well with operational demands in complex IT environments.


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S4B21A HPE 18x 25G SFP28 4x 100G QSFP28 2x SFP+ Network Switch
S4B21A HPE 18x 25G SFP28 4x 100G QSFP28 2x SFP+ Network Switch