Cisco: AI growth is exposing campus network limits

While enterprise IT leaders have spent the past two years focusing AI infrastructure discussions on GPUs, cloud platforms, and data centers, new Cisco research suggests that enterprise networks may not be ready for the next phase of AI adoption. A Cisco and Foundry survey of 3,472 IT and networking leaders across 15 countries found AI is already changing traffic patterns across campus and branch environments and exposing capacity, security, and visibility gaps that many organizations aren’t prepared to address. “We have entered a networking supercycle, because the network is so central to all the AI infrastructure the world is building now,” said Jeetu Patel, Cisco president and chief product officer, in a statement . The findings reveal that enterprises may need to expand AI readiness planning beyond data centers and cloud environments and pay more attention to the networks connecting employees, applications, and devices. This issue will become more significant as enterprise organizations move beyond generative AI pilots and begin deploying AI agents that communicate continuously with other systems and applications, according to the report. The Cisco survey found: Organizations reported a 34% increase in AI-related campus and branch network traffic over the past 12 months. Traffic is projected to climb 209% over the next three years, with companies broadly deploying AI expecting total network traffic to triple. 73% already face, or expect to face, campus and branch network capacity constraints within the next two years. 67% said AI workloads are increasing east-west traffic between internal systems and applications. 80% said AI has expanded their attack surface. 61% said they are delaying additional AI deployments until they gain more confidence in their security posture. 85% expect moderate or significant growth in AI agent deployments over the next two years. Changing traffic patterns inside enterprise environments are causing additional pressure for enterprise network teams. (See also: AI traffic is radically reshaping WANs ) “Usually, networks are designed for consistent traffic, like SaaS and CRM traffic, and there aren’t a lot of unpredictable traffic patterns,” said the head of AI strategy for global IT and network engineering operations at a large U.S. technology company who participated in the research. “Suddenly, three AI agents are trying to talk to each other and solve a problem. That is going to be a big thing … how do we support increased east-west traffic?” Cisco defined aggressive AI adopters as organizations with broad generative AI deployments across the enterprise, but only 30% of those organizations said they are fully prepared to support projected AI growth across their networks. As a result, 93% of IT decision makers said they are accelerating network modernization efforts. The report also highlighted an observability challenge that could complicate future deployments. As employees and business units increasingly experiment with AI tools, IT organizations may not know what is actually running on their networks. “Right now, we don’t even know what the AI-driven demand is,” the AI strategy executive said. “Observability is a huge gap. There is experimentation going on all over the place, and there is no way for us to really identify if somebody is deploying some kind of service on our network, whether it is a genAI solution or an agentic solution.” Security is also emerging as a barrier to AI expansion as organizations struggle to govern rapidly growing numbers of AI tools and workloads. “The issue from a security standpoint is that it’s hard to create the guardrails for every possible AI tool that your organization must use,” said the vice president of infrastructure, network, and end-user services at a U.S. retail enterprise interviewed for the report. The AI readiness conversation has often centered on data centers , but AI applications operate where employees work, devices connect, and business processes run. That means campus and branch environments may become just as important to AI success as the infrastructure supporting AI models. The Cisco research shows that AI infrastructure planning can no longer focus only on back-end systems if enterprises expect to scale AI deployments over the next several years. Patel said in the statement: “Eventually there will be only two kinds of companies: those that are AI companies, and those that are irrelevant.” For more Cisco news, see our coverage from Cisco Live 2026: How Jeetu Patel made Cisco unrecognizable Cisco sees quantum networking as the future of networking What is Cisco Cloud Control and why should customers care? Cisco Live: The network is back, and AI rewrote the rules Cisco brings agentic ops platform and security overhaul to Cisco Live How Cisco IT cut observability costs by 86% and eliminated major network outages