HPE R1N25A

(Composable Fabric FM 3180) 48‑Port 25 GbE + 8‑Port 100 Gb QSFP28 Ethernet Switch

 Module

The HPE R1N25A is a Composable Fabric FM 3180 module, offering 48 front-access 10/25 GbE SFP28 ports along with 8 QSFP28 uplink ports capable of 100 GbE. Designed for data‑center scale‑out fabrics, it supports front‑to‑back airflow cooling and integrates within HPE programmable composable fabrics. This module delivers low-latency, high-throughput switching (up to 1.4 Tbps capacity), with 48 SFP28 access ports serving server links and 8 QSFP28  ports facilitating direct inter-module or spine connectivity at 100 Gb speeds. Ideal for cloud, virtualization, high-density rack environments, and dynamic resource‑driven network fabrics, this switch module is optimized for scale without added fabric complexity.

Features

The R1N25A operates as a key component within the HPE Composable Fabric FM 3180 series, enabling mesh-style or traditional leaf-and-spine architectures. Each module provides eight 100 GbE QSFP28 uplinks used to interconnect modules in top-of-rack fabrics, while 48 SFP28 ports deliver flexible 10/25 Gb links to servers. With up to 1.4 Tbps switching capacity and sub‑500 nanosecond Layer‑2/3 latency, it meets performance demands of latency-sensitive workloads. Fabric Manager software centrally orchestrates network paths across dynamic workloads, intelligently selecting optimal routes across modules using layer‑1 and layer‑2 information.HPE R1N25A is engineered to meet enterprise data center demands with robust throughput, programmability, and operational flexibility. With six-to-eight QSFP28 uplinks, modules can be linked directly or via passive interconnects like FM 1006 to form scalable mesh topologies. The switch supports advanced network overlays (VXLAN, NVGRE), large routing and MAC tables, and sub‑microsecond forwarding latency—ensuring smooth performance for high-density east–west traffic flows.

Advanced Options

The module supports VXLAN and NVGRE overlays and large routing tables (e.g., 324k IPv4, 168k IPv6 entries), handling east-west traffic efficiently without hierarchy overhead. With front‑to‑back cooling and hot‑swappable PSU/fan options, it suits dense racks and service-critical environments. Built for plug-in expansion slots in HPE chassis or racks, the R1N25A is deployable without external optics changes or cabling modifications—even at scale.