Understanding Scale-Out, Scale-Up, and Scale-Across Networking
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…
The post Understanding Scale-Out, Scale-Up, and Scale-Across Networking appeared first on JTnetwork.io.
VXLAN EVPN ESI multi-homing on Nexus 9000
For years, multi-homing in VXLAN BGP/EVPN fabrics with Cisco Nexus switches meant one thing: vPC. It works very well; two-switch redundancy, familiar operational model, no need to deeply understand EVPN’s…
The post VXLAN EVPN ESI multi-homing on Nexus 9000 appeared first on AboutNetworks.net.
VXLAN EVPN ESI multi-homing on Nexus 9000
For years, multi-homing in VXLAN BGP/EVPN fabrics with Cisco Nexus switches meant one thing: vPC. It works very well; two-switch redundancy, familiar operational model, no need to deeply understand EVPN’s…
The post VXLAN EVPN ESI multi-homing on Nexus 9000 appeared first on JTnetwork.io.
Cisco Live means human connectivity
Why You Should Attend Cisco Live — and Actually Talk to People Back in 2022, I wrote a post covering everything Cisco Live has to offer: the technical sessions, the…
The post Cisco Live means human connectivity appeared first on JTnetwork.io.
Cisco Live means human connectivity
Why You Should Attend Cisco Live — and Actually Talk to People Back in 2022, I wrote a post covering everything Cisco Live has to offer: the technical sessions, the…
The post Cisco Live means human connectivity appeared first on AboutNetworks.net.
RPKI ASPA: using AS-PATH to secure BGP
RPKI ASPA: a complement to RPKI/ROA that tackles BGP route hijacks through AS path manipulation. Why does BGP remain vulnerable? BGP was designed in an environment of mutual trust. Every…
The post RPKI ASPA: using AS-PATH to secure BGP appeared first on JTnetwork.io.
RPKI ASPA: using the AS-PATH to secure BGP inter-domain routing
RPKI ASPA: a complement to RPKI/ROA that tackles BGP route hijacks through AS path manipulation. Why does BGP remain vulnerable? BGP was designed in an environment of mutual trust. Every…
The post RPKI ASPA: using the AS-PATH to secure BGP inter-domain routing appeared first on AboutNetworks.net.
400Gb Over Multimode Fiber: BiDi Changes the Game
For anyone who has managed a data center fiber plant over the past decade, the arrival of 400 Gigabit Ethernet came with a painful side effect: singlemode fiber. If your…
The post 400Gb Over Multimode Fiber: BiDi Changes the Game appeared first on JTnetwork.io.
400G Over Multimode Fiber: BiDi Changes the Game
For anyone who has managed a data center fiber plant over the past decade, the arrival of 400 Gigabit Ethernet came with a painful side effect: singlemode fiber. If your…
The post 400G Over Multimode Fiber: BiDi Changes the Game appeared first on AboutNetworks.net.
Operations vs Projects Balance in IT infrastructure teams
For the past two years, I have been managing a team responsible for the data center infrastructure. It is a medium-sized team in charge of the HPC clusters, bare-metal servers,…
The post Operations vs Projects Balance in IT infrastructure teams appeared first on JTnetwork.io.
Operations vs Projects Balance in IT infrastructure teams
For the past two years, I have been managing a team in charge of operations and engineering projects on the data center infrastructure of an HPC center. It is a…
The post Operations vs Projects Balance in IT infrastructure teams appeared first on AboutNetworks.net.
Cisco U – Rev Up to Recert: Programming for Network Engineer
I just completed the Programming for Network Engineers (PRNE) learning path training on Cisco U and would like to share this with you: For a limited time, you have FREE…
The post Cisco U – Rev Up to Recert: Programming for Network Engineer appeared first on JTnetwork.io.
Cisco U – Rev Up to Recert: Programming for Network Engineer
I just completed the Programming for Network Engineers (PRNE) learning path training on Cisco U and would like to share this with you: For a limited time, you have FREE…
The post Cisco U – Rev Up to Recert: Programming for Network Engineer appeared first on AboutNetworks.net.
NVIDIA Air Infrastructure Simulation Platform
I recently tested the NVIDIA Air Infrastructure Simulation Platform and would like to share my first experiences with you. What is NVIDIA Air Infrastructure Simulation Platform or NVIDIA Air? In a…
The post NVIDIA Air Infrastructure Simulation Platform appeared first on JTnetwork.io.
NVIDIA Air Infrastructure Simulation Platform
I recently tested the NVIDIA Air Infrastructure Simulation Platform and would like to share my first experiences with you. What is NVIDIA Air Infrastructure Simulation Platform or NVIDIA Air? In a nutshell, NVIDIA Air is a cloud-hosted, data center simulation platform. Where you can: Test and validate network configurations, features, and automation code. Build your own data center topology or choose from an impressive list of pre-built topologies. You can use Cumulus Linux or SONiC as network operating system, add Ubuntu nodes, and more. Import / Export lab topologies. Share the…
The post NVIDIA Air Infrastructure Simulation Platform appeared first on AboutNetworks.net.
Cisco Live 2024 Wrap-Up – Cisco Nexus HyperFabric, Disaggregated Scheduled Fabric (DSF) and SONiC
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…
The post Cisco Live 2024 Wrap-Up – Cisco Nexus HyperFabric, Disaggregated Scheduled Fabric (DSF) and SONiC appeared first on JTnetwork.io.
Cisco Live 2024 Wrap-Up
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. If you’d like to be notified when the registration opens, you can subscribe here: https://www.ciscolive.com/global/cisco-live-2025.html But that’s not the main purpose of this…
The post Cisco Live 2024 Wrap-Up appeared first on AboutNetworks.net.
Cisco Live 2024 – an Englishman in Vegas
Once again this year, Cisco Live US 2024 will take place in Las Vegas, Nevada, from June 2 to 6, 2024. I’m already registered and I’m looking forward to it!…
The post Cisco Live 2024 – an Englishman in Vegas appeared first on JTnetwork.io.
Cisco Live 2024 – an Englishman in Vegas
Once again this year, Cisco Live US 2024 will take place in Las Vegas, Nevada, from June 2 to 6, 2024. I’m already registered and I’m looking forward to it! This year will be my 11th time attending Cisco’s annual conference in person, in both Europe and the United States. Straight to the point I’ve already written a few posts in previous years about what’s interesting to see and do at Cisco Live, and whether the conference is worth attending in person (and of course, it’s worth it!). This…
The post Cisco Live 2024 – an Englishman in Vegas appeared first on AboutNetworks.net.
The Future of Network Engineering in the AI/ML era
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: Is this the end…
The post The Future of Network Engineering in the AI/ML era appeared first on AboutNetworks.net.