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Ultra-low Latency Top-of-rack Switch for
Data Center Bridging Deployments
• 1.28Tbpsnon-blocking
switching capacity
• Forty-eight(48)10GbESFP+
ports and four (4) 40GbE QSFP+
uplinks
• All48SFP+portssupport
1GbE/10GbE speeds
• Datacenteroptimizedwith
DCBX, 802.1Qaz (ETS) and
802.1Qbb (PFC) protocol
support
• Redundantandhot-swappable
fan trays and power supply
modules
• Modularandexiblerack-by-
rack deployment
• IPv6support
• Lowpowerconsumptiondesign
Data centers today are facing a new generation of challenges. Virtualization and data center
consolidation have imposed higher bandwidth demands on data center networks. The
competitive business landscape has also pushed forward the need for faster application
deployments. Next-generation data centers need to provide the eciency, exibility and
availability to facilitate business agility and competitiveness.
The ZyXEL XS3900-48F is a high-density top-of-rack (ToR) switch designed to facilitate fast
and modularized application deployments in next-generation data centers. It supports DCBX,
802.1Qaz (ETS) and 802.1Qbb (PFC) protocols, and oers 10GbE and 40GbE connectivity to
provide high bandwidth and ultra-low latency performance for converged networks and
virtualized applications. The 48 xed 10GbE SFP+ ports can also support 1GbE SFP transceivers
for added exibility and easy network transitions. With redundant and hot-swappable fan trays
and power supply modules, the XS3900-48F oers the redundancy, reliability and availability for
non-stop services.
Benets
Ultra-low latency performance
The ZyXEL XS3900-48F is a high-density ToR switch designed to provide ultra-low latency performance
for Data Center Bridging deployments. It features forty-eight (48) 10GbE SFP+ ports and four (4) 40GbE
QSFP+ uplinks for high-performance and scalable networking. Built with non-blocking switching
architecture, the XS3900-48F delivers 1.28 Tbps switching capacity and 952.4 Mpps forwarding rate, with
an additional 9 MB packet buer. The XS3900-48F oers ultra-low latency IP switching performance on
all ports, making it the ideal choice for ToR deployments in data centers.
Data center optimized service quality
The ZyXEL XS3900-48F is optimized to deliver the service quality required in demanding converged
data center networks. This high-performance ToR switch oers enhanced management of data center
trac with support for Data Center Bridging Exchange (DCBX), 802.1Qaz Enhanced Transmission
Selection (ETS) and 802.1Qbb Priority-based Flow Control (PFC) protocols. The switch can discover and
communicate with other DCB-enabled network devices with the DCBX protocol, and utilize PFC and
ETS to manage, pause and schedule the behavior of dierent trac to avoid trac congestions, ensure
lossless operation, and guarantee bandwidth for critical applications.
XS3900-48F
48-port 10GbE Top-of-rack
Switch with 40GbE Uplink
Modular and exible rack-by-rack deployment
To meet the demands of rapidly changing business operations, data centers today need to be more
agile and exible than ever before. Purpose-built for top-of-rack deployments, the ZyXEL XS3900-48F
facilitates modular data center deployments, which oer fast and easy rack-by-rack server changes
or upgrades. Not only do top-of-rack data center designs require less cabling infrastructure and oer
cleaner cable management, they also enable quicker deployment and easier scaling of network
applications.
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KeyApplications
XS3900-48F
48-port 10GbE Top-of-rack Switch with 40GbE Uplink
Data Center Core
XS3900-48F
ToR Switch
XS3900-48F
ToR Switch
Server and Storage Racks
40GbE Fiber
Specications
Model XS3900-48F
Switch class Layer 2
Port Density
Total port count 52
10-Gigabit SFP+ 48
40-Gigabit QSFP+ 4
Performance
Switching capacity (Gbps) 1,280
Forwarding rate (Mpps) 952.4
Packet buffer (byte) 9 M
MACaddresstable 128 K
Power
Input 100 - 240 V AC, 50/60 Hz
Max. power consumption (watt) 232
Removable power module Yes
Physical Specifications
Dimensions (WxDxH)(mm/in.) 440 x 455 x 43/17.32 x 17.91 x 1.69
Weight (kg/lb.) 10.2/22.49
Removable power & fan modules Yes
Environmental Specifications
Operating
Storage
MTBF (hr) 156,472
Heat dissipation (BTU/hr) 1,024.32
Temperature 0°C to 50°C/32°F to 122°F
Humidity 10% to 95% (non-condensing)
Temperature -47°C to 70°C/-52.6°F to 158°F
Humidity 10% to 90% (non-condensing)
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