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CX732Q-N-V2

32 x 400G QSFP-DD Data Center Leaf/Spine Switch with EVPN Multi-homing, Enterprise SONiC NOS, Marvell Falcon

Highlights
  • PTP accurayc 20ns with Falcon
  • Powered by Asterfusion’s Enterprise SONiC Distribution
  • Purpose-built for Broadcast, Finance, Telecom and Smart Grid scenarios
  • With 288K IPv4 and 144K IPv6 host/prefix based on Falcon
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400Gb Data Center Switch

Enterprise SONiC 32-Port 400G Data Center Core/Spine Switch

The Asterfusion CX732Q-N-V2 is a 32×400G QSFP-DD data center switch powered by the Marvell Falcon and preloaded with AsterNOS (Enterprise SONiC). It delivers deterministic performance with open, production-ready networking. With a throughput of 12.8 Tbps and a switching latency of ~1500 ns, the CX732Q-N-V2 is ideal for spine deployments.
Shipping with AsterNOS, the CX732Q-N-V2 combines SONiC openness with enterprise-grade stability and feature depth. It supports VXLAN, BGP-EVPN, EVPN multihoming, MC-LAG, ECMP, and DCI, and offers rich telemetry and automation via INT, REST API, gNMI, NETCONF, ZTP, Ansible, and Python.
The CX732Q-N-V2 optional supports IEEE 1588v2 PTPv2 and SMPTE 2059-2 standards through hardware and software integration. Nanosecond-level time synchronization across the network for AI/ML distributed training, financial trading, and time-sensitive applications.

Enterprise SONiC 32-Port 100G QSFP28 Dater Center Leaf/Spine Switch Low Latency 

The Asterfusion CX532-N is a powerhouse 32x100G QSFP28 data center switch, engineered for Top-of-Rack (ToR) and spine architectures. Driven by the cutting-edge Marvell Teralynx 7 ASIC, it delivers blazing-fast line-rate L2/L3 switching performance up to 3.2 Tbps, coupled with ultra-low latency and unmatched packet processing power. With latency slashed to an incredible 500 nanoseconds, the CX532-N is tailor-made for latency-sensitive workloads like AI, HPC, and machine learning—ensuring rock-solid, high-throughput performance even under intense small-packet traffic bursts.

288K

IPv4 Routes

144K

IPv6 Routes

128K

MAC Address Entries

KEY POINTS

Key Facts

500ns

Ultra Low Latency

6300Mpps

Packet Forwarding Rate

70MB

Packet Buffer

Optimized Software
for Advanced Workloads
– AsterNOS

Pre-installed with Enterprise SONiC, it supports advanced features such as RoCEv2 and EVPN multihoming, combining lightning-fast forwarding rates with massively oversized packet buffers. The CX732Q-N-V2 doesn’t just perform — it outperforms, leaving competing products in the dust.
Feature Lists ↓

Optimized Software for Advanced Workloads – AsterNOS

Pre-installed with Enterprise SONiC, it supports advanced features such as RoCEv2 and EVPN multihoming, combining lightning-fast forwarding rates with massively oversized packet buffers. The CX532-N doesn’t just perform — it outperforms, leaving competing products in the dust.

Feature Lists ↓

Virtualization

VXLAN
BGP EVPN
EVPN Multihoming

Zero Packet Loss

RoCEv2 for AI/ML/HPC
PFC/PFC Watchdog/ECN
QCN/DCQCN/DCTCP

High Reliability

ECMP/Elastic Hash
MC-LAG
BFD for BGP & OSPF

Ops Automation

Python & Ansible, ZTP
In-band Network Telemetry
SPAN/ERSPAN Monitoring

asternos-bg

Virtualization

VXLAN
BGP EVPN
EVPN Multihoming

High Reliability

ECMP/Elastic Hash
MC-LAG
BFD for BGP & OSPF

Zero Packet Loss

RoCEv2 for AI/ML/HPC
PFC/PFC Watchdog/ECN
QCN/DCQCN/DCTCP

Ops Automation

Python & Ansible, ZTP
In-band Network Telemetry
SPAN/ERSPAN Monitoring

Specifications

Ports32x 400G QSFP-DD
2x 10G SFP+		Switch ChipMarvell Falcon
Switching Capacity12.8 TbpsNumber of VLANs4K
Forwarding Rate5600 MppsMAC Address Entries128K
Packet Buffer48 MBARP/ND92K/64K
Latency~1500nsIPv4/IPv6 RoutesIPv4: 288K Host + 144K Prefix
IPv6: 288K Host + 144K Prefix
Hot-swappable AC Power Supplies2 (1+1 Redundancy)Dimensions (HxWxD)44x 440x 515mm
Hot-swappable Fans6 (5+1 Redundancy)Rack Units1 RU

Quality Certifications

ISO-9001-SGS
ISO-14001-SGS
ISO-45001-SGS
ISO-IEC-27001-SGS
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2-Year Warranty

Features

PTP Support for Sub-Microsecond Precision Timing(Optional)

Data Center switches deliver 10ns high-precision PTP (IEEE 1588v2) synchronization with TC/BC/OC clock modes.
Supporting multiple profiles and One-step/Two-step mechanisms, it provides carrier-grade timing for Telecom, Finance, Power Grid, and Broadcast industries.
ptp-optional

Asterfusion Network Monitoring & Visualization

AsterNOS supports Node Exporter to send CPU, traffic, packet loss, latency, and RoCE congestion metrics to Prometheus.
Paired with Grafana, it enables real-time, visual insight into network performance.
prometheus-paired-with-grafana

O&M in Minutes, Not Days

Automate with Easy RoCE, ZTP, Python and Ansible,  SPAN / ERSPAN Monitoring & more—cutting config time, errors, and costs.
400G switch operation and management

Comparison of Data Center Switches

CX732Q-N-V2CX532P-N-V2CX308P-48Y-N-V2
Port Speeds32x400G, 2x10G32x100G, 2x10G8x100G, 48x25G, 2x10G
Hot-swappable PSUs and FANs1+1 PSUs, 5+1 FANs1+1 PSUs, 4+1 FANs1+1 PSUs, 3+1 FANs
MC-LAG√√√
BGP/MP-BGP√√√
EVPN√√√
BGP EVPN-Multihoming√√√
RoCEv2√√√
PFC √√√
ECN√√√
INT×××
Packet Spray×××
Flowlet×××
Auto Load Balancing×××
INT-based Routing×××
WCMP×××

Panel

32port 400G data center switch-5
32port 400G data center switch-6

FAQs

1. What are the differences between the CX-N and CX-N-V2 series ?

The main difference lies in the ASIC used: the CX-N series uses the Teralynx chipset, while the CX-N-V2 series uses the Prestera Falcon chipset. The choice of chipset determines the performance differences between the two. The first notable difference is in support for IPv4 and IPv6 routing table entries: CX-N-V2 products with the Falcon chipset offer larger tables, supporting 288K IPv4 entries and 144K IPv6 entries. The second significant difference is PTP support: CX-N-V2 with Falcon supports PTP, whereas the CX-N series does not.

2. What NOS can both CX-N and CX-N-V2 series run?

Both series run Enterprise SONiC NOS. They support L2/L3 functions, EVPN multi-homing, RoCE, and other features.

3. How to choose between CX-N and CX-N-V2 ?

If you require PTP functionality and larger routing table capacity, the CX-N-V2 series is the appropriate choice.

4. Which RDMA-capable NICs (e.g., Mellanox ConnectX-4/5/6, Broadcom, Intel) and drivers have been validated on your CX-N series switches?

All major RDMA-capable NICs, including Mellanox ConnectX-4/5/6, Broadcom, and Intel, as well as their standard drivers, have been validated on our CX-N series switches.

5. If you have any recommendations for setting up an NVMe-oF, any documentation/case studies?

We have successfully deployed NVMe-oF solutions for several customers. Please contact bd@cloudswit.ch to get case study~

6. We want your switches to do AI inference, Our working AI inference config looks somewhat like: Camera (SRT) -> Compute Node NIC -> GPU -> [Compute Node NIC -> NVMe-oF + Compute Node NIC -> Other Nodes for processing]. If you have any past setups similar to that, are there any solutions to include Camera SRT feed or GigE feed into RoCEv2 congestion management?

Yes, by marking or prioritizing the camera SRT or GigE traffic at the switch egress or ingress, the switches can treat it as high-priority and apply PFC/ECN-based congestion management, similar to RDMA traffic. However, SRT itself implements its end-to-end congestion control at the application layer and does not utilize or require DCQCN, which is specific to RDMA flows.

7. For a configuration of 8–10 cameras and 3–4 compute nodes plus one NVMe-oF server, do you think a single switch would suffice, or should we consider a hierarchical switch setup?

Two switches are recommended for this scale to provide dual-homing for all devices, ensuring both redundancy and high availability for your deployment.

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