Every email you send, every video call you join, every website you visit — the data passes through networking equipment that Cisco probably made. Routers, switches, firewalls, wireless access points — Cisco builds the infrastructure that holds the internet together. This quarter, the company hit a record: $15.84 billion in revenue, up 12% year-over-year, driven by an AI-fuelled boom in data centre networking. Non-GAAP EPS came in at $1.06, up 10% and above guidance. Cisco also raised its full-year forecast, signalling confidence that the momentum isn't a one-quarter spike.
Here's what happened.
The Numbers: Record Revenue
- Revenue: $15.84 billion, up 12% year-over-year — record quarterly revenue
- Non-GAAP EPS: $1.06, up 10% — above guidance
- Networking revenue: $8.82 billion, up 25% — beat $8.47B estimate
- Security revenue: growing
- AI infrastructure orders: very strong
- Full-year FY2026 guidance: raised
Cisco's fiscal year runs from August to July, so Q3 FY2026 covers February through April 2026. Record quarterly revenue of $15.84 billion means Cisco has never generated this much revenue in a single quarter in its 40+ year history. The key driver is networking revenue up 25% — that's the core business of selling the physical equipment that moves data around. When Cisco raises full-year guidance after posting a record quarter, it's telling the market: this isn't just a good quarter, it's a stronger trajectory.
Networking: The AI Data Centre Boom
Cisco's networking division — the largest segment at $8.82 billion in revenue, up 25% — is booming because of the AI infrastructure buildout.
Here's the connection that most people miss: everyone talks about Nvidia selling AI chips, but those chips need to be connected to each other. A modern AI data centre contains thousands of GPUs that must communicate at incredible speeds — and the networking equipment that connects them is made by companies like Cisco.
The "hyperscalers" (Amazon AWS, Microsoft Azure, Google Cloud, Meta) are spending billions building AI-optimised data centres, and every data centre needs Cisco's high-speed switches, routers, and optics to function. Cisco's networking equipment is the highway system connecting all those AI chips.
This demand has driven Cisco's order book to record levels. Data centre switches capable of handling AI workloads require specialised, high-bandwidth networking that commands premium prices — and Cisco is one of only a handful of companies that can deliver at scale.
Think of an AI data centre like a brain. The GPUs (from Nvidia) are the neurons — they do the actual thinking. The networking equipment (from Cisco) is the nervous system — it connects all the neurons so they can communicate. If the networking is slow or unreliable, the entire AI system bottlenecks, no matter how powerful the GPUs are. That's why Cisco's networking revenue is surging alongside Nvidia's GPU revenue — they're two sides of the same AI infrastructure build.
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Get the free extensionSecurity: The Growing Division
Cisco's security business is smaller but growing. The company sells firewalls, intrusion detection systems, endpoint protection, and cloud security tools to enterprises.
The security market benefits from a structural tailwind: cyberattacks are increasing in frequency and sophistication, and companies are spending more to protect themselves. Cisco's advantage is its networking position — because Cisco equipment already sits at the centre of most enterprise networks, it has a natural vantage point from which to detect and block threats.
Cisco's acquisition of Splunk (completed in 2024 for $28 billion) significantly expanded its security and data observability capabilities. Splunk's platform helps organisations analyse massive amounts of machine data to identify security threats, monitor system performance, and troubleshoot issues.
"Observability" is a tech concept that means being able to see what's happening inside complex systems. If your company runs hundreds of applications across multiple cloud providers, observability tools (like Splunk) let you monitor everything from a single dashboard — spotting problems before they become outages. It's like having a control room with screens showing every part of your operation. Cisco is betting that companies will pay for integrated networking + security + observability from a single vendor rather than buying from multiple specialists.
What's Coming Next
Cisco raised its full-year FY2026 guidance, reflecting confidence in continued demand for AI infrastructure and enterprise networking.
The AI networking opportunity is still early. While the current wave of spending is driven by hyperscalers building AI training infrastructure, the next wave will come from enterprises deploying AI in their own data centres and from AI inference workloads that require different (but still substantial) networking architectures.
Cisco is also pushing into software and subscription revenue. Historically, Cisco sold hardware boxes — one-time purchases. Increasingly, the company is selling software licences and subscriptions that generate recurring revenue. This shift matters because recurring revenue is more predictable and carries higher margins than hardware sales.
The shift from "hardware sales" to "software subscriptions" is one of the most important trends in enterprise tech. When Cisco sells a router for $10,000, it books the revenue once. When it sells a $200/month software subscription alongside that router, it books $2,400 per year, every year. After five years, the subscription has generated more revenue than the hardware sale. Investors love subscription revenue because it's predictable, recurring, and high-margin. Cisco's subscription transition is real but still in progress — the company is trying to shift billions of dollars of revenue from one-time to recurring.
The Bottom Line
Cisco delivered record quarterly revenue, driven by AI-fuelled demand for data centre networking. Guidance was raised. The company is riding the AI infrastructure wave alongside Nvidia.
↑ Why This Matters (Bull Case)
Cisco is a direct beneficiary of the AI infrastructure buildout — and most investors are underestimating how much networking equipment AI data centres require. Networking revenue up 25% demonstrates that AI spending flows to Cisco, not just to GPU makers. Record revenue of $15.84 billion and a guidance raise signal sustained demand, not a one-off surge. The Splunk acquisition creates a compelling integrated platform (networking + security + observability) that enterprise customers want. The subscription transition is improving revenue quality and margins. And Cisco trades at a fraction of Nvidia's valuation despite being a critical piece of the same AI infrastructure stack.
↓ Why This Might Worry You (Bear Case)
Cisco's AI networking boom could be cyclical. The current spending surge is driven by hyperscalers racing to build AI capacity, but if AI spending slows or shifts, Cisco's orders could decline sharply — similar to the inventory correction Cisco experienced in 2023 when customers over-ordered during the supply chain crisis and then paused. Cisco faces growing competition in data centre networking from Arista Networks (which some consider more innovative) and from the white-box switch movement (where hyperscalers build their own networking equipment). The Splunk integration at $28 billion is a significant bet that needs to deliver returns. And while the subscription transition is positive, hardware still represents the majority of revenue — a full shift will take years.
The question is whether Cisco's AI networking boom represents a sustained structural shift that keeps orders elevated for years, or a demand spike that will inevitably normalise — leaving Cisco with record revenue as the high-water mark.
References
- Cisco Investor Relations — Q3 FY2026 Earnings Press Release (May 14, 2026)
- Reuters — Cisco Hits Record Revenue on AI Data Centre Networking Demand (May 14, 2026)
- Barron's — Cisco's AI Moment: How Networking Became the Other AI Play (May 14, 2026)
Ticker: CSCO (NASDAQ) · Reported: May 14, 2026
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