What switching capacity and latency does the S4048-ON deliver?
The Dell S4048-ON provides 1.44Tbps full-duplex non-blocking switching capacity with sub-650ns latency on 64-byte packets. This enables line-rate L2/L3 forwarding across all 48 10GbE and 6 40GbE ports simultaneously, making it ideal for latency-sensitive data center and HPC deployments requiring deterministic, microsecond-level performance.
How many ports does the S4048-ON have and what speeds are supported?
The S4048-ON features 48 dual-speed 1/10GbE SFP+ ports and six 40GbE QSFP+ uplinks. Each QSFP+ port can also support four 10GbE breakout cables, enabling up to 72 total 10GbE ports with appropriate transceiver configuration. Supports both optical SFP+/QSFP+ transceivers and breakout optics.
What are the power consumption and thermal specifications?
Maximum AC power consumption is 234.35 watts with typical consumption at 153 watts. The switch includes two redundant hot-swappable 460W AC power supplies supporting 100-240V 50/60Hz input. Maximum thermal output is 799.64 BTU/h. Operating temperature range is 0°C to 45°C (32°F to 113°F), suitable for standard data center environments.
What advanced networking features does the S4048-ON support?
The S4048-ON supports 4K Layer 2 VLANs, 128 link aggregation groups (16 links per group), 511 VRF-Lite instances, 64 MSTP instances, and VXLAN Layer 2 gateway functionality. It can learn 160K MAC addresses, support 128K ARP entries, and route 128K IPv4 and 64K IPv6 routes, enabling complex multi-tenant and overlay network deployments.
Is the S4048-ON suitable for high-performance computing (HPC) environments?
Yes, the S4048-ON is optimized for HPC with sub-650ns latency, 1080 Mpps forwarding rate, and 12MB packet buffer memory. These specifications support tightly-coupled parallel computing workloads requiring deterministic, low-latency MPI communication. The non-blocking architecture ensures no head-of-line blocking, critical for HPC cluster interconnects.
What management and operating system options are available?
The S4048-ON runs Dell OS9 (Open Networking) and supports multiple management interfaces including CLI, SNMP, RMON, REST API, and web-based GUI. It includes 1 RJ45 console/management port with RS232 signaling, 1 USB 2.0 Type A port for mass storage, and 1 Micro-USB 2.0 Type B serial console port for out-of-band management.
What is the physical form factor and rack density?
The S4048-ON is a compact 1RU (1.73 inches high) switch, maximizing rack density in standard 19-inch equipment racks. The 1RU form factor with 48 10GbE ports and 6 40GbE uplinks provides industry-leading port density for top-of-rack deployments, conserving valuable data center rack space while delivering enterprise-class performance.
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