HPE FlexFabric 5945 48SFP28 8QSFP28 Switch

The HPE FlexFabric 5945 48SFP28 8QSFP28 Switch is a high-density, ultra-low-latency ToR (top-of-rack) switch engineered to meet the rigorous demands of modern enterprise data centers. Built to excel at the server-access and aggregation layers, this switch delivers robust performance, scalable connectivity, and intelligent management for large-scale deployments. With 48 SFP28 ports for 25 GbE connectivity and 8 QSFP28 uplinks for 40/100 GbE, the 5945 provides a flexible, future-proof fabric that simplifies network topology while reducing cabling complexity and power consumption. Its design supports data-center workflows that require low latency, high throughput, and consistent performance across virtualized environments, hyper-converged infrastructures, and storage networks alike.

• High-density 25 GbE server connectivity: 48 SFP28 ports enable dense server access and storage interfaces, delivering fast, scalable performance for virtualization, containerized workloads, and software-defined networking. This level of port density minimizes rack footprint while maximizing throughput for dense compute nodes and NVMe-enabled storage environments.
• Flexible uplinks with 8 QSFP28 ports: The eight QSFP28 uplinks provide scalable 40 GbE or 100 GbE connectivity, enabling rapid aggregation to spine layers or data center cores. This design supports future growth in workload intensity and bandwidth requirements without sacrificing port availability at the access layer.
• Ultra-low latency for virtualized workloads: Optimized forwarding and switching architecture reduce latency to microsecond-level ranges, ensuring responsive application performance for latency-sensitive databases, real-time analytics, and high-performance computing in a converged data center.
• Tailored for ToR deployments and scalable architectures: The 5945 is purpose-built for top-of-rack placement, delivering consistent performance at the server edge while enabling simplified cabling, effective cooling, and improved cable management. It also supports flexible deployments in aggregation and core layers of mid-sized data centers when needed.
• Comprehensive management, security, and QoS: Built to integrate with enterprise IT operations, the switch includes robust quality of service (QoS), ACLs, VLAN segmentation, and monitoring capabilities. Centralized management reduces on-site configuration time and improves visibility across virtual networks and storage fabrics in mixed workloads.

Technical Details of HPE FlexFabric 5945 48SFP28 8QSFP28 Switch

• Port configuration: 48 SFP28 ports (25 GbE) for server access/storage connectivity and 8 QSFP28 uplink ports (40/100 GbE) for high-capacity uplinks and spine connections.
• Form factor and design: Data-center-grade switch designed for top-of-rack (ToR) deployments, with a focus on dense port density, low latency, and reliable operation in enterprise environments.
• Forwarding and performance: Wire-speed switching with ultra-low latency suitable for virtualization, hyper-converged infrastructure, and high-throughput storage networks; optimized for consistent performance under heavy workloads.
• Layer functionality: Supports Layer 2 and Layer 3 switching features, including VLANs, quality of service (QoS), ACLs, and basic routing capabilities to enable efficient traffic segmentation and policy enforcement across the fabric.
• Management and interoperability: Compatible with standard enterprise management tools and interfaces, including CLI, SNMP, and RESTful/API access, enabling automation, monitoring, and integration with data-center orchestration platforms.
• Power and reliability: Built for continuous operation in data-center environments with considerations for efficiency and reliability; designed to integrate smoothly into existing HP/HPE network ecosystems and monitoring solutions.

how to install HPE FlexFabric 5945 48SFP28 8QSFP28 Switch

• Prepare the rack and ensure proper clearance for airflow: Verify rack mounting space, cable routing paths, and cooling availability. Confirm power circuit capacity and environmental conditions meet data-center guidelines to maintain stable operation.
• Mount the switch in the rack: Secure the device in a sturdy 19-inch rack with appropriate hardware. Ensure access to front panel ports and adequate ventilation for fans and thermal management.
• Connect power and basic redundancy: Attach the power supply connections (and optional redundant power if available) and verify that power indicators indicate healthy operation. Use the recommended power cables and ensure compliance with local electrical standards.
• Connect network cables: Run cabling from servers or storage devices to the 48 SFP28 ports and from uplink devices (e.g., spine switches or core routers) to the 8 QSFP28 ports. Use high-quality SFP28 and QSFP28 transceivers that are compatible with the HPE 5945 specifications.
• Initial configuration and verification: Access the switch via its management interface (CLI or web GUI) to perform basic setup, including IP addressing, management VLAN, and routing QoS policies. Apply the latest firmware or software image from the vendor, verify port status, and run basic connectivity tests to confirm reachability between devices on the fabric.
• Policy and fabric provisioning: Implement VLANs, ACLs, and QoS policies appropriate to your data-center fabric. If you are deploying a virtualized or storage-heavy environment, configure Layer 2 and Layer 3 paths to ensure predictable performance for traffic between servers, storage arrays, and hypervisors.
• Monitoring and ongoing optimization: Enable SNMP or RESTful telemetry if required by your network operations platform. Schedule firmware checks, backup configurations, and regular performance audits to maintain optimal throughput and low latency across the fabric.

Frequently asked questions

• What does 48SFP28 mean in the HPE FlexFabric 5945 switch? It indicates the switch provides 48 ports that support 25 GbE (SFP28) connectivity, typically used for high-speed server access and storage interfaces in data centers. This density supports modern workloads and virtualization while keeping cabling efficient.
• What is the role of the 8QSFP28 uplinks? The 8QSFP28 ports are high-capacity uplinks designed for 40 GbE or 100 GbE connections to aggregation or spine switches, enabling scalable fabric expansion and high-bandwidth interconnects across the data center.
• Is this switch suitable for ToR deployments? Yes. The 5945 is engineered for top-of-rack deployments, delivering reliable performance at the edge of the data center and simplifying cabling and cooling while maintaining strong uplink options for broader fabrics.
• What environments benefit most from the HPE FlexFabric 5945? Enterprise data centers with dense server deployments, virtualization-heavy workgroups, hyper-converged infrastructure, and storage networks requiring high-throughput, low-latency connectivity at the server edge.
• What management features should I expect? The switch supports common enterprise management interfaces and workflows, including CLI, web-based management, SNMP, and API access for automation. It is designed to integrate with existing data-center orchestration and monitoring ecosystems for streamlined operations.