ALLIED TELESIS 

ALLIED TELESIS AT-ANC25SP/2-900 TAA, 2 X 25G SFP28, PCIE NIC, IT COMBINES A HIGH BANDWIDTH ETHERNET CONTROLLER W

Mfg Part Number:  AT-ANC25SP/2-900  
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Last Updated: Aug 24, 2026
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The Allied Telesis ANC25SP PCIe 3.0 Ethernet controller is designed to build highlyscalable, feature-rich networking solutions in servers for enterprise and cloud-scale networking and storage applications, including high-performance computing, telco, machine learning, storage disaggregation, and data nalytics. It combines a highbandwidth Ethernet controller with a unique set of highly-optimized hardware acceleration engines to enhance network performance and improve server efficiency.

Hardware Acceleration

With its market-leading hardware acceleration technologies, the ANC25SP Series PCIe 3.0 Ethernet controller addresses these performance and service demands of mega-scale data center networks with high throughput and advanced flow processing. Features such as TruFlow™ increase VM density up to 0 percent, freeing more CPU cycles for additional virtual machines. On-chip tunneling protocol processing for Geneve, VXLAN, and NVGRE provides up to a 5X throughput increase while lowering CPU utilization up to 90 percent compared to software-only solutions. NetXtreme®-E Series solutions also support advanced networking technologies such as RoCE, SDN and NFV, to facilitate the management of data networks and to enable service provider solutions.

Optimized for virtualization

Using multi-port cards in virtualized environments is critical to the application in order to provide redundancy and data connectivity for the workloads in virtual machines. Due to specific slot limitations, and the need for redundancy/data connectivity, it is usually recommended that virtualized servers use 10 igabit or higher ports to satisfy the I/O demands

Superior functionality

The ANC25SP features TruFlow™, RDMA over Converged Ethernet (RoCE), Data Center Bridging (DCB), Single Root I/O Virtualization (SR-IOV), Stateless Offloads, and Congestion Avoidance

More bandwidth with PCIe

The PCI-Express (PCIe) design provides the maximum possible bandwidth and bus efficiency. Other benefits include capability and low power consumption.

Performance and reliability

Allied Telesis validates its Network Adapters over a variety of operating systems and platforms, ensuring compatibility. The ANC25SP takes full advantage of the PCI-Express bus architecture to maximize network throughput. Teaming enables Smart Load Balancing (SLB), which helps increase throughput and fault tolerance when multiple adapters are configured to share traffic and provide data reliability with failover.

NIC Partitioning

The ANC25 provides an unprecedented level of governance across the entire network, enabling detailed tests, analysis, and diagnostics for each network adapter installed in the system. It includes utilities to help configure VLANs and set up teams for link aggregation, SLB, failover, and more. The ANC25 ncludes a comprehensive Microsoft Windows utility which performs detailed tests, diagnostics and analysis

Main Specification
General Information
Manufacturer Allied Telesis, Inc
Manufacturer Part Number AT-ANC25SP/2-900
Manufacturer Website Address http://www.alliedtelesis.com
Brand Name Allied Telesis
Product Series ANC25
Product Model ANC25SP/2
Product Name PCIe 2 x 25 Gig SFP28 Network Interface Card, TAA
Product Type 25Gigabit Ethernet Card
Technical Information
Features RDMA over Converged Ethernet (RoCE)
Features Receive Side Scaling (RSS)
Features Large Receive Offload (LRO)
Features Generic Network Virtualization Encapsulation (GENEVE)
Features UEFI Support
Features iSCSI Extensions over RDMA (iSER)
Features TCP Segmentation Offload (TSO)
Features Virtual Extensible LAN (VXLAN)
Features LED Indicator
Features IPv4
Features Single Root I/O Virtualization (SR-IOV)
Features Transmit Side Scaling (TSS)
Features Large Send Offload (LSO)
Features Jumbo Frames Support
Features Network Virtualization using Generic Routing Encapsulation (NVGRE)
Features IPv6
Features RDMA Support
Features PXE Support
Features Extended Message-Signaled Interrupts (MSI-X)
Interfaces/Ports
Host Interface PCI Express 3.0 x8
I/O Expansions
Total Number of Expansion Slots 2
Expansion Slot Type SFP28
Media & Performance
Media Type Supported Optical Fiber
Maximum Data Transfer Rate 25 Gbit/s
Physical Characteristics
Form Factor Plug-in Card
Bracket Height low-profile
Height 2.7"
Width 3.8"
Weight (Approximate) 3 oz
Miscellaneous
Package Contents
  • PCIe 2 x 25 Gig SFP28 Network Interface Card, TAA
  • Standard Bracket
Application/Usage Network
Device Supported Server
Operating System Compatibility Windows Server 2025
Operating System Compatibility Windows 11
Operating System Compatibility Windows 10
Operating System Compatibility Windows Server 2022
Operating System Compatibility Linux
Environmental Compliance Restriction of Hazardous Substances (RoHS)
TAA Compliant Yes
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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