P45692-B21 HPE Managed Switch

High-Performance 19-inch Rackmount InfiniBand Fabric Switch with Managed L2/L3 Control using the P45692-B21

The P45692-B21 is an HPE rackmount, full-width 19-inch InfiniBand switch engineered for AI and HPC fabrics where deterministic latency and lossless transport are mandatory. Built as a standalone managed L2/L3 fabric element, the P45692-B21 supports 64 x 800Gb/s OSFP ports to sustain dense spine/leaf designs and to reduce oversubscription across GPU training and MPI-heavy east-west traffic patterns.

For modern clusters, the P45692-B21 aligns bandwidth with accelerator and storage demands by enabling high-throughput, non-blocking interconnect paths that scale linearly as leaf counts grow. Its managed L2/L3 capabilities provide the operational controls required for multi-rack expansion, segmentation, and resilient pathing, while the rack-integrated architecture preserves cable discipline and serviceability in high-density rows. Designed for enterprise reliability, the platform includes redundant power supplies to maintain fabric availability during component replacement or power-domain events.

Why Choose the P45692-B21?

The P45692-B21 delivers a pragmatic density-to-performance profile for production fabrics: 800Gb/s port density for fewer devices per tier, predictable scaling for spine/leaf topologies, and managed L2/L3 functions that simplify controlled growth from pilot pods to full training clusters. With redundant PSU design and data centre-standard rack integration, the P45692-B21 supports operational continuity and repeatable deployments across multiple compute blocks.

HPE designs switching platforms with a focus on data centre integration, sustained throughput under load, and lifecycle stability for enterprise change management. The P45692-B21 reflects this engineering approach by combining fabric-grade switching with managed control planes and service-friendly hardware aligned to modern rack and power standards.

Key Applications:

• AI training and GPU cluster fabrics
• HPC MPI interconnect
• Spine/leaf InfiniBand switching
• Parallel file system back-end networking
• Low-latency east-west data centre fabrics

At Happyware - Server Hardware you benefit from non-binding offers tailored to your deployment size for the P45692-B21, enabling accurate BOM planning for spine/leaf builds, and from extended warranty options up to 6 years to protect long-lived AI/HPC fabric investments based on the P45692-B21.