Legacy networking infrastructure is reclaiming its central role as the essential backbone for the global AI buildout
Executive summary: Legacy networking giants, specifically Cisco, are seeing a massive resurgence in importance as they provide the essential connectivity infrastructure required for AI hardware and data center expansions. The AI revolution is not just about chips and models; it requires massive physical networking upgrades to handle new data loads, creating a high-value market for established networking players.
Who is involved: Cisco, AI hyperscalers, and data center operators like Equinix.
Likely next: Increased capital expenditure from hyperscalers toward networking hardware and potential partnerships between chipmakers and networking vendors.
The resurgence of companies like Cisco highlights a critical market realization: AI's computational power requires robust, high-capacity networking to function. As data center demands scale, the industry is pivoting from pure software/chip focus back to the physical infrastructure layer. This shift validates long-term networking investments as the necessary foundation for AI scalability.
What's next — scenarios
Base: Sustained infrastructure demand (60%)
Networking vendors maintain high order backlogs and steady revenue growth driven by AI data center builds.
- Consistent quarterly growth in AI-related networking orders
- Continued expansion of hyperscaler CAPEX
Upside: AI Networking Supercycle (25%)
Accelerated transition to next-gen networking protocols leads to massive margin expansion for Cisco and peers.
- Rapid adoption of agentic AI requiring real-time connectivity
- Strategic breakthroughs in AI-optimized networking hardware
Downside: Hardware Overcapacity (15%)
A slowdown in AI model training or data center construction leads to a glut in networking equipment and inventory write-downs.
- Declining CAPEX reports from major cloud providers
- Slowing growth in AI workload demand
What to watch
- Equinix annual data center buildout spending updates
- Cisco quarterly networking order reports
- Hyperscaler capital allocation trends in upcoming earnings
Timeline
- — The old new thing: Cisco and retro tech are back and forming the AI buildouts backbone (MarketWatch)
- — Cisco Delivers Trusted AI at Scale Through New Splunk Advancements (PR Newswire)
- — Cisco Systems Sees AI Agents Fueling a Multi-Year Networking Boom (Yahoo Finance)
Analysis — what this means
Likely next events
- Equinix annual buildout review (ongoing)
- Cisco upcoming quarterly earnings report
Sectors affected
- Networking hardware manufacturers
- Data center REITs
- AI semiconductor designers
Historical parallels
- The shift from general purpose computing to specialized AI acceleration (early 2020s)
Key entities
Sources
- The old new thing: Cisco and retro tech are back and forming the AI buildouts backbone — MarketWatch
- Cisco Systems Sees AI Agents Fueling a Multi-Year Networking Boom — Yahoo Finance
- Cisco Delivers Trusted AI at Scale Through New Splunk Advancements — PR Newswire