NetXtreme® C-Series Single-Port 50G and Dual-Port 25G Cloud-Optimized Ethernet Controller

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Based on Broadcom’s scalable 25/50G Ethernet controller architecture, NetXtreme® C-Series controllers can be used to build highly-scalable, feature-rich networking solutions in servers for cloud-scale applications.
NetXtreme® C-Series addresses the performance and service demands of mega-scale data center networks for high throughput and advanced flow processing. Features such as TruFlow™ increase VM density up to 50%, 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% compared to software-only solutions. NetXtreme® C-Series controllers also support advanced networking technologies such as SDN and NFV, to facilitate the management of cloud networks and to enable service provider solutions.


  • Standards-compliant 10/25/50G support with 30MPPS full-duplex throughput
  •  LOM-able single-chip solution optimized for mega-scale data center and application workloads
  •  TruFlow™ engine for intelligent flow processing to increase server VM density and accelerate vSwitch processing
  •  New end-to-end congestion avoidance and management to anticipate and eliminate congestion before it happens
  •  Support for advanced networking technologies including SDN, NFV and virtualization
  • TruManage™ enhances server manageability and security for data center deployments


  • LAN on Motherboards (LOM)
  • Enterprise and Cloud Servers
  • Software-Defined Networking Solutions (SDN)
  • Network Function Virtualization (NFV)

Lifecycle Status


Specification Value
Lifecycle Active
Distrib. Inventory No
Ordering Part # BCM57304A1KFSBG
ASIC 57304
Link-Speeds 50/40/25/10Gb
Ports 2
TruFlow™ Yes
TruManage™ Yes
Smart Congestion Control No
RoCEv2 No
Multi-Host No
Smart NICs No
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FAQs1 i


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