About this blog

“It would be nice to talk about this into a blog, to help the next one who meets the same problem!”

This is what I say every time I come across a new challenge, or problem, and I cannot find all the needed documentation. Or when I found an undocumented strange behavior on a network equipment or protocol.
As network engineer since 1996, I said this phrase millions of times. So, here it is now: I created this blog.

I will talk here mostly about Cisco, Meraki and Huawei network systems, the related softwares for network planning, design, operations, troubleshooting and automation, and about my learning experiences in networking, software scripting and cloud.

About me

My name is Jerome Tissieres, I live in Switzerland and I am network engineer since 1996.

Jerome Tissieres

My current position is senior network systems engineer at Swisscom for enterprise customers.
I am doing consulting and building network enterprise solutions in routing, switching, wireless and security technologies based on Cisco, Huawei and Meraki products. I also build managed WAN MPLS/VPN circuits for business customers in my area, and participates to the development and enhancements of Swisscom enterprise products and services.

Before that, I held many different network engineer positions, you can find my complete professional experience on my linkedin page.

Professional Experience

Before my current position, I worked three years as head of network engineering and operations for a small Internet services provider, in the Italian part of Switzerland. Before that, I was senior network engineer in the HQ of a large company, operating a worldwide MPLS network and many LAN sites. Before, I was the senior network engineer of the famous IMD business school campus network in Lausanne, Switzerland. And before, I was thirteen years peering manager and principal network engineer for two different medium-size Internet services providers, in the French part of Switzerland.

When I started my career as network engineer, in 1996, I built the IP network of one of the first private ISP of Switzerland. The core network was based on frame-relay. A couple of years later, we migrated it to ATM. And later, to a multi-gigabit metro-Ethernet with business MPLS/VPN services, including data, voice and TV. The access part has evolved from dial-up access and leased-lines, to DSL and FTTH/FTTO circuits. The edge part, from a single upstream provider with static routing, to a BGP multi-homed network including many IXP with public and private peerings.

During that time, I kept an important place for learning and self-study. I love learning, study and practice new technologies, and I also like to share this knowledge with other people. Working as a network engineer for over 20 years, I have constantly learned: on network technologies of course, but also on network design, best practices, troubleshooting methods, configurations and fault management, monitoring and scripting. And I am still learning. For example on network automation, software defined networking (SDN), Python scripting and network functions virtualization (NFV). And this is why I have a passion for this job; you always learn and you have to learn always!

Personal Side

On the personal side, I am married to a wonderful wife, I have three beautiful children and my mother tongue is French. Since 2010, I live in the Italian speaking part of Switzerland  and I speak Italian with my colleagues and customers. This may explain some spelling mistakes on this blog, my apologies in advance.

Industry Certifications

I currently hold the following certifications:



  • CMNA (2015, refresh done in 2018)
  • CMNO #00177



This is true, I am not CCIE. I passed two times the CCIE R&S written exam (versions 4.0 and 5.0) and I failed four times at the CCIE Routing and Switching lab. Once at the exam version 4.0 in 2013, and three times at the version 5.0 between 2016 and 2017. Now, I have stopped chasing my CCIE numbers to be able to learn other technologies.

During this long journey, I took two Narbik Kocharians / Micronics’s bootcamps and completed multiple times the lab workbooks of INE, iPexpert and Narbik. I also did many practice labs from Cisco expert-level training (formerly Cisco-360). This was a fantastic experience during around five years and I learned a lot!

I will come back to my CCIE journey more in details on this blog, so stay tuned.