Name: S4B21A#ABA HPE Aruba CX 18x1/10/25G SFP28 4x40/100G QSFP28 Switch
Brand: HPE
SKU: S4B21A#ABA
Price: 1.00 USD
Availability: InStock
Rating: 4.8 (130 reviews)

Product Overview
The HPE Aruba CX 18x 1/10/25G SFP28 4x 40/100G QSFP28 Switch supports a variety of network speeds through 18 SFP28 ports and four QSFP28 ports, providing flexible connectivity options. It is designed for use in environments requiring mixed-speed uplinks and high-throughput switching capabilities.

General Information
Brand	HPE
Condition	Refurbished

Technical Information
Switch Type	Layer 3, Managed Switch
Form Factor	Rack-Mountable
Mount Type	1U Rack
Switch Ports	18
Number of Ports	22-Ports
Port Type	25G SFP28, 40G QSFP+, 100G QSFP28, USB Console, Serial Console (RJ-45)
Port Speed	1G,10G,25G,40G,100G
UpLink Ports	4x 40/100G QSFP28
POE Support	No
Switching Capacity	1.7 Tbps
VLAN Support	Yes
Max VLANs Supported	1-4094
Stackable	Yes
Layer Support	Layer 3
Connector Type	SFP28,QSFP28

Performance
Jumbo Frame Support	Up To 9216 Bytes

Management and Configuration
Routing Protocols	Static, OSPF, OSPFv3, BGP, VRRP, IGMP
Remote Protocols	Yes
Management Interfaces	Console (RJ-45),USB Console,SSH,Web GUI,SNMP,REST API
Security Features	ACL,802.1X,RADIUS,TACACS+,MAC Authentication,DHCP Snooping,IP Source Guard,Port Security
Management Type	CLI,Web GUI,REST API
Remote Management Protocol	SNMPv1,SNMPv2c,SNMPv3,SSH,HTTPS,REST
Routing Protocol	Static,OSPF,BGP,VRRP

Physical Characteristics
Weight	3.00

Miscellaneous
Eco Friendly	Yes
Assembly Required	No
Compliance Standards	WEEE, RoHS, CE, FCC

Product Description
The HPE Aruba CX 18x 1/10/25G SFP28 4x 40/100G QSFP28 Switch (S4B21A#ABA) provides versatile port configurations to accommodate varying network speed requirements. It supports standard SFP28 transceivers for 1G, 10G, and 25G connectivity alongside four QSFP28 ports capable of 40G and 100G connections. This switch is typically deployed in data center environments or enterprise networks requiring flexible uplink options and scalable throughput. Network administrators and IT professionals use it to manage diverse workloads with varying bandwidth needs. Key Features 18 SFP28 ports supporting 1G, 10G, and 25G speeds 4 QSFP28 ports for 40G and 100G connectivity Modular interface design for flexible network integration Compact and efficient hardware design Supports high-speed optical transceivers compatible with standard networking modules This switch offers practical adaptability for evolving network demands. Its mix of port types allows organizations to optimize connections between servers, storage, and other network devices while maintaining consistent performance across multiple speed tiers.

Use Cases
This switch is commonly used in data centers or enterprise network cores where flexible port speeds are necessary. It supports network environments with mixed 1G, 10G, 25G, 40G, and 100G devices, catering to varied workloads and user demands. How It's Used: Connecting servers with varied network interface speeds in data centers Aggregating traffic from multiple 10G and 25G access switches Providing uplink ports to higher-capacity 40G and 100G network segments Deploying in enterprise environments with mixed-speed requirements Supporting virtualization and cloud workloads requiring scalable bandwidth Overall, this switch facilitates network scalability by accommodating different device speeds and delivering appropriate bandwidth, which helps maintain efficient data flow in complex network topologies.

FAQ's
What port speeds does the S4B21A#ABA switch support? The switch supports 1G, 10G, and 25G speeds on its 18 SFP28 ports and 40G or 100G speeds on its 4 QSFP28 ports. These options enable versatile network configurations. Can the QSFP28 ports be used for both 40G and 100G connections? Yes, the QSFP28 ports on this switch support both 40G and 100G links using appropriate transceivers, allowing flexible uplink capacity. Is the switch compatible with standard SFP28 and QSFP28 transceivers? The switch is designed to work with standard-compliant SFP28 and QSFP28 optical transceivers for its supported speeds. What environments is the HPE Aruba CX S4B21A#ABA switch intended for? It is intended for data center and enterprise network deployments requiring mixed-speed connectivity and scalable port density. Does the switch support 1G connections on all SFP28 ports? Yes, the 18 SFP28 ports support 1G speeds alongside 10G and 25G, providing backward compatibility with lower-speed devices. What is the typical use case for the mixed port speeds on this switch? Mixed port speeds allow connecting devices with different bandwidth requirements, enabling flexible network design and efficient resource allocation.