My name is Ivan Ivanov. I am in my mid-thirties and live in Sofia, Bulgaria. I have been a senior network engineer for over a decade now.
I worked and consulted for data center groups, large enterprises, and government institutions. I hold many certifications from Cisco, including CCIE Enterprise. As a lifelong learner, I enjoy sharing the knowledge I've learned over the years.
I invest most of my free time researching making networking fun, and making hard concepts easy to understand. I apply everything I discover to my little website, where you'll find lots of diagrams and animations that make complex subjects easier to learn.
I understand that there is no economic equality in the world. That's why all my courses are completely free to provide equal opportunity to every student eager to learn! I rely solely on donations to pay the hosting fees. If one of my courses has helped you, please consider buying me a coffee :)
Besides networking, I am a huge StarCraft fan, following the Korean pro scene closely! I also love playing Padel and am a huge Arsenal fan!
Recent supporters

Mohan Muthu bought a coffee.
Ivan, Your site is simply superb. You cover the topics as needed for a network engineer to understand. I have your book (volume 1) and going over it made SDWAN a lot more easier for me than the long and often confusing Cisco documentation. I feel that the entire SDWAN Cisco documentation should be replaced by your book, seriously.
!
I look forward to Volume 2.
Keep up the good work!
Regards,
Mohan (from India)

Vinod Palicha bought a coffee.
Sir Ivan
Your SDWAN explanation is detailed yet easy to understand.
Salute from 5 times Cisco Distinguished Instructor
SINGAPORE

Ellen MacHenry bought 3 coffees.

Tim Johnson bought 5 coffees.
Hi Ivan,
Thank you so much for the obvious effort you have put into the site! Also, really appreciate the fact that you are freely given back to the networking community. The comprehensive example based approach on full subject has been a real nice change from disparate information normally found on the web.

Someone bought 3 coffees.