My CCDE Journey — Background, Preparation, Study Strategy, Courses, and Practice Exams
My CCDE Journey This post is the third in a series about the CCDE certification journey. The first post covers exam-day tips and tricks for the practical. The second post…
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CCDE Reading List
One of the most common questions I get from CCDE candidates is: “What should I read?” and “Where should I start?” This post is the CCDE reading list I actually…
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CCDE Practical Exam — Tips and Tricks for Exam Day
I recently passed the CCDE practical exam at Cisco Live. I am now CCDE #2026::37. During my preparation, I gathered insights from fellow candidates, seasoned CCDEs, and instructors, including Zig…
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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…
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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…
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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…
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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…
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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.
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…
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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…
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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,…
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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…
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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…
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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…
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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…
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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…
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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.