orhan ergun Hi, I’m Orhan Ergun. CCDE Trainer, Author and Network Design Advisor

It would be nice to pass Cisco CCDE exam in your first attempt, right?

Would you like to learn Service Provider, Enterprise, Datacenter and Mobile Operator real life network design ?

What about discussing real life network design with the employees of the companies such as AT&T, Amazon, Cisco and many others in the same class ?

You have maybe many CCIE but you realised that none of them gives you a credibility which you want.You want to be the most respectful person in your organization and among all your peers.You are very good at many technologies but realized that being an expert at network design is different and so important.

The problem is you don’t know where to start. Everybody out there only tries to teach you how to configure the protocols or devices but definitely no information about real life network design. Vendors are always talking about their awesome products ! You want to learn design so much, you search but nothing different out there, everybody copy & paste each other ! Stop searching anymore.

I created Network Design Course:

  • I will teach you network design principles and all the best practices which will make you the most respectful person in your organization
  • I will show you how real life networks look like and big companies design their network, you will have an idea about the big picture
  • I will teach you the techniques which will improve your strategic design thinking.If you want to be the best, you need to start thinking different than others.
  • I will provide many practical network design scenarios which will help you to pass Cisco CCDE exam in your first attempt
  • I will give you many complementary study resources because if you are a research learner,additional resources help you to put the pieces together.
  • I will provide lifetime free access to all my online design videos, books and other resources so you will continue learning network design after the course.
  • I will introduce you to other network designers in the class so you will have design discussions, before, during and after the class together.


See what Orhan Ergun’s students are saying about DesignWorld.

daniel lardeux

I passed the CCDE Practical exam and Orhan’s CCDE course was very important contributor to my success.

Daniel Lardeux, Senior Network Consultant at Post Telecom
jason gooley

Orhan’s ability to cover the vast technical topics required for the CCDE is tremendous. He is not only very technical; he is also an amazing teacher.

Jason Gooley, System Engineer at Cisco Systems
deepak kumar

I attended Orhan’s CCDE Course and I must say the guy has exceeded my expectations in all ways in terms of quality, depth etc.

Deepak Kumar, Senior Network Engineer at HCL
michael zsiga

Orhan goes into a great level of detail to explain the design implications of each technology and the relationships with other technology that it could affect.

Michael Zsiga, Lead Architect at ePlus
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Hamed Zolghadri

CCDE #20150003

Roy Lexmond

CCDE #20150017

Daniel Lardeux

CCDE #20150039

Mohamad Haddad

CCDE #20150040

Johnny Britt

CCDE #20150036

Martin J Duggan

CCDE #20160006