Cisco Q3 FY2026: Record Revenue, $9B AI Networking Forecast & Astrix Security Acquisition

Published: May 24, 2026 | Category: Networking & Infrastructure

Quarter at a Glance

Cisco Systems (NASDAQ: CSCO) reported its Q3 FY2026 earnings on May 13, 2026, delivering what the company described as its strongest financial quarter on record. Total revenue reached $15.8 billion, up 12% year-over-year, beating the top end of prior guidance. Non-GAAP EPS came in at $1.06, also ahead of consensus. Networking revenue alone hit $8.8 billion, a 25% year-over-year increase, driven by accelerating hyperscaler and enterprise demand for AI-ready infrastructure.

AI Infrastructure Orders & Revised Guidance

The headline figure of the quarter was AI infrastructure. Cisco disclosed $1.9 billion in AI infrastructure orders from hyperscalers during Q3 alone — up from $600 million in the same period a year ago. The year-to-date total reached $5.3 billion, already surpassing the company's original full-year target. As a result, Cisco raised its full-year FY2026 AI infrastructure order forecast from $5 billion to $9 billion, representing more than 4x growth compared to the prior fiscal year. Full-year AI infrastructure revenue guidance was similarly raised to $4 billion, up from $3 billion. Total product orders grew 35% year-over-year; excluding hyperscalers, orders were still up 19%, reflecting broad-based global demand rather than a single-segment spike.

Silicon One G300: The Hardware Behind the Surge

The primary hardware driver of Cisco's AI networking growth is the Silicon One platform. In Q2 FY2026, Cisco shipped its one millionth Silicon One chip. The flagship G300 architecture, unveiled at Cisco Live EMEA in Amsterdam in February 2026, delivers 102.4 Tbps of full-duplex Ethernet switching capacity within a single device. It supports up to 512 ports via 224G SerDes and features Intelligent Collective Networking — combining a fully shared packet buffer, path-based load balancing, and proactive network telemetry. The G300 powers the new Cisco N9000 and Cisco 8000 systems, which are designed for hyperscalers, neoclouds, sovereign clouds, and enterprise AI data centers. These systems are available in 100% liquid-cooled configurations that, alongside new high-density optics, improve energy efficiency by nearly 70%. Cisco also positions the G300-based systems as competitors to Nvidia's NVLink in the scale-up AI fabric segment — a market that has historically been dominated by proprietary interconnects.

Astrix Security Acquisition & Zero Trust for Agentic AI

On May 4, 2026, Cisco announced its intent to acquire Astrix Security, a Tel Aviv-based Non-Human Identity (NHI) security startup founded in 2021. The acquisition targets a critical and underserved security gap: governing and protecting non-human identities such as API keys, OAuth tokens, service accounts, and autonomous AI agents. Cisco framed the deal as extending Zero Trust architecture to what it calls the "agentic workforce" — the growing ecosystem of AI agents operating autonomously inside enterprise environments. Astrix's platform enables agentless discovery, lifecycle management, and real-time behavioral threat detection for NHIs across SaaS, IaaS, and PaaS environments. Cisco plans to integrate Astrix's capabilities into Cisco Identity Intelligence, Cisco Secure Access, Duo, and Splunk. The urgency is underscored by Cisco's own data: only 24% of organizations currently have proper guardrails and live monitoring in place to control AI agent actions, and just 31% feel fully capable of securing their agentic AI systems. Concurrently, Cisco issued a critical security advisory on May 6, 2026, addressing Authentication Bypass vulnerabilities in the Cisco Identity Services Engine (ISE), with administrators urged to apply patches immediately.

Broad-Based Global Demand

Geographic order growth was strong across all regions: Americas product orders grew 35% year-over-year, EMEA grew 39%, and APJC grew 25%. Campus networking orders grew more than 25% year-over-year, and data center switching orders grew more than 40% year-over-year. Cisco's optics business alone generated more than $1 billion in quarterly orders — a signal that optical transport infrastructure has become a primary, rather than secondary, component of AI data center buildouts. Cisco's stock surged approximately 13–19% following the earnings release, significantly outperforming the broader tech sector.

Restructuring: 4,000 Job Cuts

Alongside the record results, Cisco announced a 5% workforce reduction affecting approximately 4,000 employees, expected to cost up to $1 billion. The company is reallocating investment toward AI, security, and cloud networking. CEO Chuck Robbins characterized the rebalancing as part of positioning Cisco for what he called its strongest year ever, with Q4 FY2026 full-year revenue guidance set in the range of $62.8 billion to $63 billion.

Infrastructure Implications for IT Professionals

Cisco's Q3 results carry concrete implications for network engineers, infrastructure architects, and IT certification candidates. The shift toward AI-native networking infrastructure — high-radix Ethernet fabrics, 800GbE+ switching, liquid-cooled systems, and integrated optics — is accelerating the retirement of legacy architectures. The agentic AI security gap highlighted by the Astrix acquisition signals that Zero Trust skills, NHI governance, and identity-based access control are becoming mandatory competencies. For professionals pursuing Cisco certifications (CCNA, CCNP, CCIE) or broader networking credentials, understanding AI-ready infrastructure design, Silicon One architecture, and agentic security frameworks is increasingly essential for real-world deployment readiness. Platforms such as SPOTO offer exam training and practice materials aligned with the evolving Cisco certification curriculum to help IT professionals stay current in this fast-moving landscape.

Sources

Cisco Q3 FY2026: Record Revenue, $9B AI Networking Forecast & Astrix Security Acquisition