Nvidia now ranks first among vendors in data center Ethernet switching, according to market research firm IDC. The finding, reported by Data Center Knowledge, marks a change at the top of a product category that networking specialists have dominated for years.

IDC's vendor ranking places Nvidia ahead of its rivals in data center Ethernet switching — a segment that covers the switches connecting servers and storage inside AI clusters and conventional data center networks.

What does the ranking signal?

For most of the Ethernet switching market's history, incumbent networking vendors held the top positions. Nvidia entered the market through its Mellanox acquisition and built its switching portfolio around the demands of AI workloads.

AI clusters push switching requirements beyond typical enterprise networking: high radix, high-bandwidth ports and tight integration with compute. Nvidia's position as a primary supplier of AI accelerators gave it a direct channel into the switching layer of the same deployments.

The IDC ranking indicates that this compute-plus-networking bundling has now carried Nvidia past established switching vendors in this specific segment.

Why does Ethernet switching matter for AI builds?

Ethernet competes with InfiniBand as the interconnect for large-scale AI training clusters. Each accelerator in a cluster depends on the network fabric to exchange gradients and model states, so switching capacity effectively gates cluster throughput.

A vendor that supplies both accelerators and switches can offer customers a single procurement path and co-engineered performance. Buyers evaluating AI infrastructure therefore now weigh switching portfolios alongside GPU supply.

Nvidia's rise to the top of the Ethernet switching ranking suggests that AI-related demand, rather than traditional enterprise refresh cycles, drove the largest share of recent switch purchases in this segment.

What happens next?

The ranking will likely intensify competition among switching vendors for AI cluster designs. Networking incumbents must argue for open, multi-vendor Ethernet fabrics against Nvidia's integrated stack, while hyperscalers continue to develop their own switching silicon.

For data center operators, the practical consequence is a broader set of qualified Ethernet options for AI builds — with Nvidia now the reference point at the top of IDC's ranking.