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NVIDIA ConnectX-6 Lx MCX623436AN-CDAB 25/50G Ethernet SmartNIC Dual-Port 25GbE Adapter
Product Details:
| Brand Name: | Mellanox |
| Model Number: | MCX623436AN-CDAB |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1pcs |
|---|---|
| Price: | Negotiate |
| Packaging Details: | outer box |
| Delivery Time: | Based on inventory |
| Payment Terms: | T/T |
| Supply Ability: | Supply by project/batch |
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Detail Information |
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| Model NO.: | MCX623436AN-CDAB | Ports: | Dual |
|---|---|---|---|
| Technology: | Eth | Interface Type: | Osfp56 |
| Specification: | 16.7cm X 6.9cm | Origin: | India / Israel / China |
| Transmission Rate: | 100gbe | Host Interface: | Gen4 X16 |
| Highlight: | NVIDIA ConnectX-6 Lx SmartNIC,25GbE dual-port network adapter,50G Ethernet SmartNIC with warranty |
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Product Description
NVIDIA ConnectX-6 Lx MCX623436AN-CDAB 25/50G Ethernet SmartNIC
The NVIDIA ConnectX‑6 Lx MCX623436AN‑CDAB is a high‑performance dual-port 25/50GbE Ethernet SmartNIC designed for modern enterprise and cloud data centers. It delivers line‑rate 75Mpps message rate, advanced RoCE, SDN acceleration with ASAP2, and inline IPsec cryptography in a low‑profile PCIe form factor.
Product Overview
This dual‑port 25GbE SmartNIC scales to 50Gb/s total bandwidth with single 50GbE port configuration. Built on PCIe Gen4 x8 host interface, it delivers cutting‑edge performance for virtualized and containerized cloud data centers. The adapter features ASAP2 for SDN offload, Zero‑Touch RoCE for simplified RDMA deployment, and hardware‑accelerated IPsec inline encryption to secure data‑in‑motion without CPU overhead.
Key Features
- Port configuration: 2× 10/25GbE or 1× 50GbE
- Total bandwidth: Up to 50Gb/s
- Message rate: 75Mpps line‑speed
- Host interface: PCIe Gen4 x8 (backward compatible to Gen3)
- Form factor: Low‑profile PCIe
- RoCE: Zero‑Touch RoCE (ZTR) with PFC/ECN auto‑configuration
- SDN acceleration: ASAP2 for VXLAN, GENEVE, NVGRE, MPLS, GTP
- Security: Inline IPsec (AES‑XTS 256/512), hardware root‑of‑trust
- Virtualization: SR‑IOV, VirtIO, connection tracking (L4 firewall)
- Management: NC‑SI, MCTP, PLDM, secure firmware update
Technology & Design
The ConnectX‑6 Lx ASIC integrates advanced acceleration engines that offload the host CPU for networking, security, and storage workloads. ASAP2 technology enables full SDN data‑plane offload, supporting overlay encapsulations (VXLAN, GENEVE, NVGRE) and service provider protocols (MPLS, GTP). The adapter features a programmable flexible parser, flow mirroring, sampling, statistics, and hierarchical QoS. Hardware root‑of‑trust with secure boot and firmware updates using RSA cryptography protects the supply chain and guarantees firmware authenticity.
Typical Deployments
- Enterprise data centers: 25GbE server connectivity for virtualization and cloud workloads
- Telco/NFV: Accelerated VNFs with MPLS and GTP offload for 5G and edge computing
- AI/ML clusters: RoCE‑based low‑latency storage and compute interconnects
- Security‑sensitive environments: IPsec‑encrypted east‑west traffic with zero CPU impact
- Software‑defined storage: High‑performance NVMe‑over‑Fabrics with RoCE
Specifications
| Parameter | Value |
|---|---|
| Product Type | Ethernet SmartNIC |
| Chipset | NVIDIA ConnectX‑6 Lx |
| Port Configuration | 2× 10/25GbE SFP28 or 1× 50GbE QSFP28 |
| Total Bandwidth | Up to 50Gb/s |
| Message Rate | 75 Mpps (line‑rate) |
| Host Interface | PCIe Gen4 x8 (backward compatible to Gen3 x8) |
| Form Factor | Low‑profile PCIe |
| Connectivity | SFP28 (dual‑port) / QSFP28 (single‑port 50G) |
| RoCE | Zero‑Touch RoCE (ZTR) with PFC/ECN auto‑config |
| SDN Offload | ASAP2: VXLAN, GENEVE, NVGRE, MPLS, GTP |
| Security | Inline IPsec (AES‑XTS 256/512), hardware root‑of‑trust |
| Virtualization | SR‑IOV, VirtIO, connection tracking (L4 firewall) |
| Management | NC‑SI, MCTP (SMBus/PCIe), PLDM, NCSI over RBT (OCP) |
| Remote Boot | iSCSI, PXE, UEFI (x86/Arm) |
| Model Number | MCX623436AN-CDAB |
This SKU includes IPsec crypto acceleration. For non‑crypto variants, please contact our sales team.
Selection Guide
| Feature | MCX623436AN-CDAB | Other Variants |
|---|---|---|
| Ports | 2× SFP28 (25GbE) / 1× QSFP28 (50GbE) | Varies by SKU |
| PCIe | Gen4 x8 | Gen4 x8 or Gen3 x8 |
| IPsec Crypto | Yes (inline) | Optional (non‑crypto available) |
| Form Factor | Low‑profile PCIe | OCP 3.0 SFF also available |
| RoCE | Zero‑Touch RoCE | Zero‑Touch RoCE |
| Management | NC‑SI, MCTP, PLDM | NC‑SI, MCTP, PLDM |
For OCP 3.0 form factor or other port configurations, please contact our sales team for specific ordering part numbers.
Advantages
- CPU offload: ASAP2 and IPsec acceleration free up CPU cores for application workloads
- Simplified RoCE: Zero‑Touch RoCE eliminates complex PFC/ECN configurations
- Security at scale: Hardware root‑of‑trust and inline IPsec encrypt all traffic without performance penalty
- Future‑ready: PCIe Gen4 x8 delivers 16GB/s bandwidth for emerging workloads
- Virtualization optimized: SR‑IOV and VirtIO acceleration enable efficient multi‑tenant clouds
- Cost‑effective: Best TCO for 25GbE enterprise deployments
Frequently Asked Questions
Q: What is the maximum bandwidth of this adapter?
A: Up to 50Gb/s total bandwidth - configurable as 2×25GbE or 1×50GbE.
Q: Does this card support RoCE?
A: Yes, it features Zero‑Touch RoCE (ZTR) with auto‑configuration for PFC and ECN, simplifying RDMA deployment.
Q: What is ASAP2?
A: ASAP2 (Accelerated Switch and Packet Processing) offloads SDN data‑plane processing to the SmartNIC, accelerating VXLAN, GENEVE, NVGRE, MPLS, and GTP encapsulations.
Q: Is this card compatible with PCIe Gen3 servers?
A: Yes, it is backward compatible with PCIe Gen3 x8 slots.
Q: What security features are included?
A: Inline IPsec encryption (AES‑XTS 256/512), hardware root‑of‑trust for secure boot, and secure firmware updates with RSA cryptography.
Q: Does this SKU include crypto acceleration?
A: Yes, the MCX623436AN‑CDAB includes IPsec inline crypto. Non‑crypto variants are also available.
Key Facts
Part number: MCX623436AN-CDAB
Chipset: ConnectX‑6 Lx
Ports: 2× SFP28 (25G) / 1× QSFP28 (50G)
Host: PCIe Gen4 x8 (16GB/s)
Message rate: 75 Mpps
Security: IPsec crypto, root‑of‑trust
RoCE: Zero‑Touch RoCE
Form factor: Low‑profile PCIe
Chipset: ConnectX‑6 Lx
Ports: 2× SFP28 (25G) / 1× QSFP28 (50G)
Host: PCIe Gen4 x8 (16GB/s)
Message rate: 75 Mpps
Security: IPsec crypto, root‑of‑trust
RoCE: Zero‑Touch RoCE
Form factor: Low‑profile PCIe
Compatibility Matrix
| Category | Supported Platforms |
|---|---|
| Operating Systems | Linux (RHEL, Ubuntu, SLES), Windows Server, VMware ESXi |
| Switches | NVIDIA Spectrum SN2000/SN3000/SN4000 series, third‑party 25/50G switches |
| Servers | x86 and Arm‑based servers with PCIe Gen3/Gen4 slots |
| Management | NC‑SI, MCTP, PLDM, NCSI (OCP variants) |
Buyer Checklist
- Confirm your server has an available PCIe Gen3 or Gen4 x8 slot
- Verify the required port count (2×25G or 1×50G) and connector type (SFP28 or QSFP28)
- Check if your OS and driver stack are supported
- Determine if IPsec crypto acceleration is required for your security policy
- Evaluate power and cooling capacity of your server chassis
Handling Precautions
- Observe standard ESD precautions during installation and handling
- Ensure the system is powered off before inserting or removing the adapter
- Use appropriate anti‑static wrist straps and grounded workstations
- Do not touch the edge connector or exposed components
- Follow system vendor guidelines for PCIe slot power and cooling requirements
About Hong Kong Starsurge Group
Hong Kong Starsurge Group Co., Limited is a technology‑driven provider of network hardware, IT services, and system integration solutions. Since 2008, we have served customers worldwide with networking equipment including switches, NICs, wireless access points, controllers, cables, and optical modules. Our experienced sales and technical teams support diverse industries such as government, healthcare, manufacturing, education, finance, and enterprise. We deliver customized solutions, global logistics, and multilingual support - all built on a customer‑first commitment to reliability, performance, and scalability.
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