Name: S4B20A HPE Layer 3 Switch 18x 25G SFP28 4x 100G QSFP28 2x 10G SFP+
Brand: HPE
SKU: S4B20A
Price: 1.00 USD
Availability: InStock
Rating: 4.8 (129 reviews)

Product Overview
The HPE S4B20A switch offers a flexible port mix of 18x 25G SFP28, 4x 100G QSFP28, and 2x 10G SFP+ interfaces. It operates as a Layer 3 switch supporting advanced routing capabilities, suitable for data center and enterprise network configurations requiring multiple speed connections within one device.

General Information
Brand	HPE
Condition	Refurbished

Technical Information
Switch Type	Layer 3, Managed 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,10G,100G
UpLink Ports	4x100G QSFP28,2x10G SFP+
POE Support	No
Switching Capacity	1740 Gbps
Switch Forwarding Rate	3398 Mpps
VLAN Support	Yes
Max VLANs Supported	1-4094
Layer Support	Layer 3
Connector Type	SFP28,SFP+,QSFP28

Performance
Jumbo Frame Support	Up To 9216 Bytes

Management and Configuration
Routing Protocols	Static, OSPF, OSPFv3, BGP, VRRP, PIM-SM, IGMP
Remote Protocols	Yes
Management Interfaces	CLI,Web GUI,REST API,SSH,Telnet,SNMP
Security Features	ACLs,802.1X,RADIUS,TACACS+,DHCP Snooping,IP Source Guard,Dynamic ARP Inspection,MAC Authentication
Management Type	In-band Management,Out-of-band Management
Remote Management Protocol	SNMP,SSH,Telnet,REST
Routing Protocol	Static,OSPF,BGP,VRRP

Physical Characteristics
Weight	3.00

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

Product Description
The HPE S4B20A is a Layer 3 switch equipped with a versatile mix of 18x 25G SFP28 ports, 4x 100G QSFP28 ports, and 2x 10G SFP+ ports. It is designed to handle various network speeds and protocols, providing flexible connectivity options in data center or enterprise environments. This switch is commonly deployed in scenarios requiring advanced L3 routing, supporting traffic segregation and optimized path selection for complex network topologies. IT professionals managing network infrastructure benefit from its multi-speed port configuration and routing capabilities. Key Features Port configuration includes 18x 25G SFP28, suitable for high-speed server or storage connections Four 100G QSFP28 ports providing uplink or aggregation capabilities Two 10G SFP+ ports for compatibility with legacy 10G devices Layer 3 switching enables routing between VLANs and subnets Supports mixed-speed connectivity within a single switch platform The combination of multi-speed ports and Layer 3 functionality allows this switch to fit into various network roles, including aggregation, core switching, or top-of-rack deployment. Its port density and interface types support evolving data center requirements where speed and flexibility are essential.

Use Cases
This HPE switch is typically used in data center or enterprise networks where a range of high-speed connections is necessary. It supports diverse workloads involving server uplinks, storage connectivity, and network aggregation in environments that require Layer 3 routing and flexible port speeds. How It's Used: Top-of-rack switch connecting servers with 25G and 10G interfaces Aggregation switch consolidating multiple 25G and 100G links for uplinks Layer 3 routing between VLANs in medium to large enterprise networks Data center environments requiring mixed-speed port support on a single device Supporting high-bandwidth storage or compute clusters with 25G and 100G ports The switch serves a critical role in managing traffic flow and connectivity across fast and varied network links. Its multi-speed ports and routing functions help unify network segments while supporting evolving bandwidth demands.

FAQ's
What types of ports does the HPE S4B20A switch provide? The switch includes 18x 25G SFP28 ports, 4x 100G QSFP28 ports, and 2x 10G SFP+ ports, supporting multiple network speeds for diverse connectivity needs. Does the S4B20A support Layer 3 routing? Yes, the HPE S4B20A functions as a Layer 3 switch, enabling advanced routing between VLANs and subnets in network environments. Can the 100G QSFP28 ports be used for uplinks? Yes, the 4x 100G QSFP28 ports are typically used for uplink or aggregation purposes to higher-layer switches or routers. Is the S4B20A suitable for mixed-speed network environments? Yes, with ports supporting 10G, 25G, and 100G speeds, the switch accommodates mixed-speed deployments within one device. Who is the typical user of the HPE S4B20A switch? IT professionals managing data center or enterprise networks that require flexible port speeds and Layer 3 routing capabilities commonly use this switch. What environments benefit most from the S4B20A’s port configuration? Data centers and enterprises with varying bandwidth needs and multi-speed connectivity benefit from its combination of 10G, 25G, and 100G ports.