David Bombal #518: How Cisco Links Data Centers: 64x800G at 51.2 Tbps Securely
Oct 17, 2025
27:55
Big thanks to Cisco for Sponsoring this video. For more information about the topic being discussed follow the following link: https://blogs.cisco.com/news/the-thir...
Cisco’s Martin Lund joins David Bombal to unpack how AI-scale networking really works - and why a 51.2 Tbps, 64×800G, post-quantum–ready router matters. We break down scale-up vs scale-out vs scale-across, deep buffers to prevent drops on long-haul links, line-rate IPsec/MACsec, SONiC vs IOS XR, P4 programmability, coherent optics for ~1000 km DCI, and how these pieces enable exabit-class fabrics for AI clusters.
What you’ll learn
• Why GPUs are useless without massive, reliable interconnects
• 51.2 Tbps with 64×800G ports and what that enables for AI training
• Deep buffers vs shallow buffers and when each wins
• Line-rate encryption today and post-quantum readiness tomorrow
• SONiC on Cisco Silicon One, P4, and automation at hyperscale
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// MENU //
0:00 - Coming Up
0:54 - Intro
0:59 - Martin's Background
02:15 - Martin's Advice
02:48 - Cisco's Announcement
06:12 - Data Center Scaling
07:02 - Data Centres Scaling Across
11:08 - New Router Speeds
13:24 - Securing the Data Center (Quantum Computing)
17:57 - Are Deep Buffers Efficient?
19:25 - New Protocols
22:50 - Data Center Infrastructure
24:07 - 8804 Router Innovations
25:33 - The Future of Data Centers
27:50 - Conclusion
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Disclaimer: This video is for educational purposes only.
#cisco #networking #ai