Global Switch Market Size, Competitive Landscape, and Technology Trends (2023)

Global Market Size: According to IDC, the worldwide switch market reached 308 billion CNY in 2022 (up 17.0% YoY) and is projected to grow to 322 billion CNY in 2023 and 377 billion CNY by 2027, with a CAGR of about 4.6% for 2022‑2027.

China Market Size: IDC reports that China’s switch market was 59.1 billion CNY in 2022 (up 9.5% YoY), accounting for 19.2% of the global market; it is expected to reach 64.5 billion CNY in 2023 and 87.8 billion CNY by 2027, representing 23.3% of the global market.

This article continues the analysis from the previous piece “Switch Basics Overview (2023)”, which covered definitions, classifications, architecture, technical principles, performance metrics, application scenarios, and the industry chain.

Today we share the second part, covering market size and competitive landscape, switch technology trends, and a comparison of Ethernet switches versus InfiniBand switches.

1. Switch Competitive Landscape

International Market – Cisco dominates, Arista grows rapidly TheNextPlatform estimates that Cisco held 46.0% market share (≈4.61 billion USD) in Q1 2023, up 33.7% YoY, while Arista posted $1.15 billion revenue in Q1 2023, up 61.6% YoY; both companies enjoy gross margins near 60%.

Domestic Market – Oligopolistic structure IDC data shows that in 2021 the top five Chinese switch vendors were Huawei, H3C, Ruijie Networks, Cisco, and Maipu, with market shares of 40.0%, 36.2%, 12.2%, 5.4% and 1.5% respectively, accounting for 95.3% of the market.

2. Switch Technology Trends

Trend 1: Lossless Data‑Center Solutions (RDMA) The rising demand for high‑speed switches drives the adoption of lossless data‑center solutions (RDMA), which reduce latency by bypassing the TCP/IP stack and moving data directly into server memory.

RDMA is widely implemented via InfiniBand and RoCE (RDMA over Converged Ethernet).

Trend 2: White‑Box Switches White‑box switches offer greater programmability and flexibility, using open hardware architectures and decoupled software/hardware, making them suitable for future high‑performance, customizable network services.

In the context of slowing global economic growth and high AIGC compute costs, the low cost and openness of white‑box switches become even more advantageous.

Trend 3: CPO Silicon‑Photonic Optics Two main development routes exist: Co‑Packaged Optics (CPO) and Near‑Packaged Optics (NPO), both aiming to boost data‑center performance while significantly reducing power consumption.

Trend 4: Liquid‑Cooled Switches As data‑center heat dissipation accounts for up to 33% of total power consumption, liquid‑cooling solutions (single‑phase and two‑phase, with immersion cooling being the most effective) lower device temperatures and improve performance.

Trend 5: TSN (Time‑Sensitive Networking) Solutions TSN addresses high‑bandwidth requirements; combined with OPC UA it can solve protocol fragmentation and accelerate application deployment.

Trend 6: Domestic Chip Rise While the global Ethernet PHY market is still dominated by international vendors, Chinese chip makers are gradually improving self‑reliance and gaining market share.

3. Ethernet Switches vs. InfiniBand Switches

InfiniBand offers superior performance for AI model training, HPC, and network self‑healing, but suffers from lower compatibility and higher cost compared to Ethernet, which remains the mainstream due to its cost‑effectiveness, broad compatibility, and long‑distance transmission support.

NVIDIA’s Quantum‑2 platform includes the Quantum‑2 series switches, ConnectX‑7 InfiniBand adapters, and BlueField‑3 DPU, built on a 7 nm process with 57 billion transistors per chip, offering 64 × 400 Gbps or 128 × 200 Gbps port configurations and up to 51.2 Tbps bidirectional throughput.

The NVIDIA Quantum‑2 switches support various topologies (Fat‑Tree, SlimFly, DragonFly+, multidimensional Torus) and are compatible with previous generations and a broad software ecosystem.

In NVIDIA’s SuperPOD server clusters, the QM9700 switch (64 × 400 Gbps) is the recommended choice, enabling high‑performance interconnects for AI workloads.

Overall, the switch market is moving toward higher bandwidth, lower latency, and more energy‑efficient solutions, with white‑box, silicon‑photonic, liquid‑cooled, and TSN technologies shaping the next generation of data‑center networking.