AboutNetworks.net • Let's talk About Networks, by Jerome Tissieres

Cisco Live 2022

May 13, 2022 Jerome Tissieres

Cisco Live US 2022 will be June 12-16 in Las Vegas. After two years of virtual conferences and being vaccinated three times against Covid-19, I’m more than motivated to go in person! However, for those who are still hesitating, there is also an online version, over two days, probably in a similar format to 2021. I am really looking forward to it and being able to talk and interact with my former colleagues, friends, and peers again. This is probably the best part about attending a conference in person: meeting…

Cisco DCAUTO exam study resources

January 31, 2022April 25, 2022 Jerome Tissieres

I just passed the Cisco DevNet DCAUTO (300-635) exam (Yay!). This is my 3rd Cisco exam on network automation after NPDESI in 2018 (replaced now by the DevNet program), and DevNet CORE (DEVCOR) in 2020. But this time, I documented everything I read, so I could report it here and build a Cisco DCAUTO exam study resources. By doing this, I hope to help anyone who wants to study for this certification. And, as I have already passed the DevNet CORE exam, I am now Cisco certified DevNet Professional.

2021 IT Blog Awards finalist!

January 11, 2022January 11, 2022 Jerome Tissieres

I have the honor of having my blog selected as a finalist in the 2021 IT Blog Awards, hosted by Cisco. It is a privilege and a great joy for me to have my blog selected for the fourth consecutive year! Congratulations also to all of the other finalists, who all produce great and valuable content! Click here to vote and choose the winner of the 2021 IT Blog Awards.

First steps with pyATS

November 29, 2021 Jerome Tissieres

Have you ever wanted to compare the operational state of a bunch of network devices between two specific times? Not only if the interfaces are up or down, but the number and status of BGP peers, the number of prefixes received, the number of entries into a MAC-address table, etc? This is something quite laborious to do with classical NMS or Do-It-Yourself scripts. And this is where pyATS can become a real asset. Here are my first steps with pyATS: Network Test & Automation Solution.

How to simulate a host in a real network?

October 10, 2021 Jerome Tissieres

Like some other posts, I didn’t think I would write this one because it seemed obvious. But, after talking to a lot of engineers and customers, I realized that not everyone knows this trick. So here it is. The question is this: how to simulate a real host in a physical network environment when you don’t have computer at your disposal? Well, let’s take an example.

Basic Linux Networking tips and tricks part-5: tcpdump

June 11, 2021June 15, 2021 Jerome Tissieres

Here is another post of the series on basic network troubleshooting and tools under Linux. In this post, I will talk about tcpdump.

25 years as a Network Engineer!

January 8, 2021October 21, 2021 Jerome Tissieres

In January 1996, I entered for the first time in the configuration of a Cisco 2501 router. This was the beginning of my career as a network engineer. That was just 25 years ago! Here’s a quick look back and a few tips for junior engineers who are at the beginning of their careers.

Goodbye 2020… and never come back!

December 21, 2020December 21, 2020 Jerome Tissieres

As we approach the end of the year, we can finally say goodbye to 2020. Goodbye 2020… and never come back! But, it is also time to look back at 2020 and try to see what the year 2021 promises us.

2020 IT Blog Awards finalist!

December 17, 2020 Jerome Tissieres

I have the honor of having my blog selected as a finalist in the Most Educational category of the 2020 IT Blog Awards, hosted by Cisco.

How to Overcome the Impostor Syndrome as Network Engineer

November 23, 2020 Jerome Tissieres

Many network engineers, myself included, sometimes feel like they don’t belong and don’t deserve to be here. Here are a few tips to combat the impostor syndrome.

My Cisco DevNet Core Exam Journey

November 10, 2020 Jerome Tissieres

On 23 October 2020, I took and passed the Cisco Certified DevNet Professional Core exam (350-901 DEVCOR) on my first attempt. I explain here the resources I used to study and pass this exam.

OnVue – Get certified from your home

October 28, 2020October 28, 2020 Jerome Tissieres

One of the positive aspects of this difficult period, if I may say so, is the possibility of taking a Pearson Vue test online, called OnVue. Last Friday, October 23rd, I took a Cisco exam from home and I think it’s interesting to share with you the details of this experience. With OnVue – Get certified from your home!

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