Analyst Zeus Kerravala: Cisco Shifts to Open Networking and Runtime Security to Meet AI Cluster Constraints
In a SiliconANGLE article, ZK Research principal analyst Zeus Kerravala analyzes Cisco's announcements at the OCP Summit. He argues that AI training clusters have made the network a critical path, forcing customers to reject lock-in and tolerate no downtime for patching. Cisco is responding with multi-source optical standards, support for the open SONiC operating system, and Live Protect, a security feature requiring no reboots. The piece suggests this shift from vertical integration to layered openness expands Cisco's addressable market but requires proving profitability amid component competition.
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For infrastructure leaders, the criteria for evaluating AI network vendors are fundamentally changing. In an article for SiliconANGLE, ZK Research principal analyst Zeus Kerravala interprets Cisco's strategic adjustments announced at this week's Open Compute Project Global Summit. He argues that the core significance of these announcements lies not in specific products, but in revealing how Cisco is responding to the dual demands of "openness" and "zero-downtime security" in the AI era.
Kerravala points out that AI workloads have altered the role of the network. As training clusters expand from hundreds to hundreds of thousands of GPUs, synchronized data flows spanning campuses and cities place long-haul networks directly on the critical path of the workload. If a link slows down, expensive GPUs sit idle. Consequently, customers no longer accept traditional vertically integrated lock-in, demanding open interfaces at every layer: chips, optics, systems, and software.
To address this pressure, Cisco has introduced several initiatives. On the hardware side, it collaborated with Nvidia to develop the Ultra-Dense Small Form Factor Pluggable (USFP) optical module, standardizing it as a multi-source agreement with TE Connectivity and Amphenol. Kerravala emphasizes that optics are a major cost and supply-chain bottleneck in AI buildouts, and multi-source standards should drive prices down through competition. On the software side, Cisco treats SONiC as a first-class citizen, offering community, custom, and validated versions, breaking from its past view of open source as a threat.