Since I took CCNA I have always tried to renew my certifications with exams from other tracks.

Now with Cisco U and the Rev Up program it becomes even easier to get CE credits and at the same time delve into other technologies.

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A customer called because they expect the Internet access in the DC to reach 10 Gbps, but a speedtest only shows 1 Gbps throughput.

Once again, it’s a network issue. Or not?

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In my role as a network architect, I often find myself validating a design based on documentation provided by the vendor. Whenever possible, I prefer to verify at least the core functionality in the lab.

Platforms such as Cisco Meraki on the one hand simplify configurations by introducing automation and abstraction mechanisms that have a great impact on large installations; on the other hand, abstractions and simplifications require careful analysis of requirements and deployment methods.

In this blog I present a scenario that I had the opportunity to test recently.

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BGP Admin Distance

When chatting with both colleagues and customers about BGP path manipulations, I’ve picked up on something interesting – the concept of admin distance can often lead to some head-scratching moments.

So, in this blog post, I’m going to take you through a few links and hands-on labs. Our goal? To unravel the mysteries surrounding admin distance and its pivotal role in the BGP best path selection process. Let’s dive in!

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I was recently engaged in a troubleshooting session pertaining to Azure Network Load Balancers (NLBs).

The assistance was sought by cloud engineers seeking deeper insights into the operational characteristics of NLBs. The findings are outlined below.

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Cloudy zones

On April 25th 2023 Google Cloud has an incident involving a datacenter. The incident impacted multiple zones.

If this sounds strange, it is because not all cloud zones are created equal.

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Where the vNic meets the SDN

Network Engineer