Networking Perspectives | Jerome Tissieres, CCDE 2026::37
Modern AI and HPC workloads place extraordinary demands on the underlying network infrastructure. And as network engineers, we are often pulled into conversations about GPU clusters, maybe without a clear map of the terrain.
Three terms come up constantly: scale-out, scale-up, and scale-across networking.
They describe fundamentally different network constraints and requirements. Here is a brief and simple explanation of each.
Last week, I attended my 11th Cisco Live in person, in the fabulous Las Vegas. This post is my Cisco Live 2024 Wrap-up.
I can already tell you that the next edition of Cisco Live US will be held June 8-12, 2025 in San Diego, California. If my company agrees to send me there, I’m already looking forward to it, because San Diego is a wonderful city.
It seems like yesterday when I saw my first network automation presentation at a conference. I remember it very well; it was in 2015 at the Cisco Network Innovation Summit in Prague. Mr. Tim Szigeti was presenting the first version of the Cisco APIC-EM, the future Cisco Digital Network Architecture (DNA) controller. I talked already about it in a previous article, written in 2018, about my journey toward network programmability and automation.
After its presentation, and for many years afterward, the question was on everyone’s lips: