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Aruba

Aruba S4B20A | 18x25G SFP28 + 4x100G QSFP28, No PoE, 4x100G uplinks, AOS‑CX L3 (included), Front‑to‑Back airflow, 2x hot‑swap PSUs, 4x fans, 1U

Aruba S4B20A | 18x25G SFP28 + 4x100G QSFP28, No PoE, 4x100G uplinks, AOS‑CX L3 (included), Front‑to‑Back airflow, 2x hot‑swap PSUs, 4x fans, 1U

SKU:S4B20A

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Description

High‑performance 25/100G fixed switch ideal for data center leaf/spine and campus core. Eighteen SFP28 ports support 1/10/25GbE, plus four QSFP28 uplinks for 40/100GbE or 4x25G breakout. Hot‑swappable dual PSUs and four fans provide resiliency with Front‑to‑Back airflow for cold‑aisle compliance. AOS‑CX delivers rich L2/L3, EVPN‑VXLAN, VSX, and comprehensive automation via NAE, REST API, and Ansible.

Features

- Flexible 1/10/25GbE access with 100GbE uplinks for high-density leaf/spine designs
- Front-to-Back airflow for hot/cold aisle alignment
- Dual hot-swappable PSUs and fans for service continuity
- AOS-CX with EVPN-VXLAN and VSX for modern data center fabrics
- Programmable automation and real-time analytics with NAE and REST APIs
- Broad optics compatibility including 40/100G and 4x25G breakouts

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Do the SFP28 ports support 10G optics?
A: Yes. SFP28 ports are backward compatible with 10G using SFP+ transceivers.

Q: Are the QSFP28 uplinks compatible with 40G modules?
A: Yes. QSFP28 ports support 40G as well as 100G and can break out to 4x25G.

Q: Is any additional license required for L3 routing features?
A: Base L3 features are included with AOS-CX on this model.

Q: What airflow direction does this model use?
A: Front-to-Back airflow for cold-aisle compliance.

Q: Is this switch stackable?
A: It uses VSX for high availability and multi-chassis redundancy rather than traditional stacking.

Technical Specifications

- Ports: 18x SFP28 1/10/25GbE data ports
- Uplinks: 4x QSFP28 40/100GbE (supports 4x25G breakout)
- PoE: None (data-only optical/copper via SFP/SFP28)
- Airflow: Front-to-Back
- Hardware redundancy: 2x hot-swappable PSUs, 4x hot-swappable fans
- Form factor: 1U rack-mount
- OS/Features: AOS-CX with L2/L3, BGP, OSPF, VRF, EVPN-VXLAN, VSX
- Automation/Telemetry: NAE, REST API, Python/Ansible, sFlow/NetFlow
- Management: CLI, Web UI, SSH, SNMP
- SFP28 backward compatibility: supports 10G with SFP+ optics
- QSFP28 compatibility: supports 40G and 100G optics/cables

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