• Consultancy

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  • Technical Service

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  • Training

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Welcome to orhanergun.net!

I’m Orhan Ergun, a network architect focused on service providers, data centers, virtualization, cloud, and network security. I have more than
15 years IT related experience, and I have worked on many medium and large-scale network design and deployment projects.

Dubai CCDE Bootcamp training

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Network Field Day

It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web default model text,

consultancy services

It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web default model text,

Training Schedule

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Products

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Latest Blog

23July 2019

May CCDE Practical exam results have been announced. Student feedbacks in this post!

Hello, May 2019 CCDE Practical exam results announced few days ago. I am happy to help 4 people to have their CCDE number on May 2019 exam. Congrats to Matt , Fredrik , Dmytro and Schilling for passing CCDE Practical...

26February 2019

Dynamic Network Diagrams, This is what we need!

We all create network diagrams. Network Engineers create network diagrams.  But for who ? When ? How they are accurate ? Do we really need network diagrams ? Let me share my thoughts with you.  (more…)

21February 2019

IPv6 in Enterprise , Should we still talk about it?

5 years ago Jeff Doyle and I recorded a podcast on IPv6 in Enterprise. We talked about IPv6 addressing plan , adaption and growth rate of IPv6 in Enterprise. In this post I would like to talk about IPv6 deployment status,...

Success Stories

Orhan goes into a great level of detail to explain the design implications of each technology and th ... Read More

Michael Zsiga

Lead Architect at ePlus

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

Daniel Lardeux

Senior Network Consultant at Post Telecom

Orhan’s ability to cover the vast technical topics required for the CCDE is tremendous. He is not ... Read More

Jason Gooley

System Engineer at Cisco Systems

I attended Orhan’s CCDE Course and I must say the guy has exceeded my expectations in all ways in ... Read More

Deepak Kumar

Senior Network Engineer at HCL

After I attended Orhan Ergun’s CCDE course I passed the CCDE practical exam.I really enjoyed the c ... Read More

Roy Lexmond

Senior Network Designer at Routz CCDE #20150017 & CCIE R&S #26557

I passed the most respectful Cisco exam CCDE on August 2016. I became first Nigerian CCDE and Orhan ... Read More

Hashiru Aminu

3xCCIE, CCDE #20160014 Technical Leader Services at Cisco Systems

I signed up for Orhan’s self-paced CCDE training. This training is very technically detailed and t ... Read More

Nicholas Russo

Network Consulting Engineer (CCDE/CCIEx2), Cisco

Orhan is forcing you to take off the implementation hat that most of us have been wearing for many y ... Read More

Anders C. Petersen

Network Systems Engineer at Conscia A/S CCIE #42544 (SP) & CCDE #20160015

I passed the CCDE exam on November 17,2016.Orhan’s CCDE Live class and Self Paced training course ... Read More

Tahir Munir

Infrastructure Consultant at Accenture CCDE #20160031, 3XCCIE

If you are considering studying for the coveted Cisco CCDE certification, make good use of the Cisco ... Read More

Felix Nkansah

Chief Executive Officer at Red Mango CCDE #20160036, 2XCCIE

I’ve used Orhan’s self-paced CCDE training material. If you are interested in knowing how all th ... Read More

Kim Pedersen

CCIE in RS and SP (#29189) CCDE#20170021

The eleven days spent in Orhan bootcamp was invaluable in helping me build confidence and master my ... Read More

Concepcion Diaz

CCIE RS, CCIE SP, CCIE DC, CCIE Col, CCIE Wir, CCIE Sec, CCDE 2017::19

Hi Orhan. I passed the CCDE exam on February 22. I read everything that you put on your Self Paced C ... Read More

Laurent Metzger

3xCCIE/CCDE Senior Network Architect

Thanks Orhan for your Instructor Led CCDE Bootcamp. It was very informative for CCDE Written and Lab ... Read More

Pramod K G

CCDE# 2017::5/CCIE# 49662

I passed CCDE exam on first attempt and Orhan’s bootcamp helped me switching mind-set from an engi ... Read More

Jaroslaw Dobkowski

CCDE# 2017::53/CCIE#22260 (RS, SP, DC)

I attended Orhan’s April 201610 days CCDE Bootcamp. I am CCDE now ! You can tell Orhan has a grea ... Read More

Martin J. Duggan

Network Architect at AT&T, Ciscopress Author CCDE #20160006 & CCIE#7942

Your excellent CCDE materials and amazing Bootcamp helped me tremendously through my learning journe ... Read More

Muhammad Abubakar

Lead Network Architect – CCDE #20160016 2xCCIE #26693 2xJNCIE VCIX

Orhan is the best teacher in network design, I have learned a lot from him about the CCDE and real l ... Read More

Ahmad Manzoor

Senior Manager at PTCL/Etisalat

I became a member of orhanergun.net for the CCDE preparation. For CCDE exam, there are very few qual ... Read More

Amit Temkar

Technical Designer at BT

I was super excited to the take the online class and I’m happy to say that the class was way beyon ... Read More

Jeriel Atienza

Technical Board Advisor at Mundo Startel

Orhan Bootcamp is really informative & I gain lots of knowledge from him. It helps to prepare the CC ... Read More

Avinash Gupta

Solution Architect at Zensar Technologies

I was glad attending Orhan online CCDE class last year. The manner he delivers the topic and explain ... Read More

Jigz Bagsic Jr

Senior Network Engineer at Alinma Bank/Saudi Arabia

Your excellent CCDE materials and amazing Bootcamp helped me tremendously through my learning journe ... Read More

Tony Vu

Technical Specialist at Optus

I attended Orhan’s CCDE Bootcamp and it was great. He contributed immensely to our knowledge by de ... Read More

Haroon Aslam

Network Consulting Engineer at Cisco Systems

I attended Orhan’s Pre-CCDE class and it was really helpful for me. Pre-CCDE class was a good intr ... Read More

Garry L. Baker

Author at Packetpushers

Thanks Orhan very much for this course. It helped strengthen my “Network design mind”. I enjoyed ... Read More

Jennifer Pai

Network/Security Engineer at KNET Technology

Training by Orhan is not a CCDE preperation training only. It will be usefull for engineers which ar ... Read More

Ruslan Silyayev

Solution Architect at R.I.S.K Company

Orhan Ergun’s CCDE course in Jan 2016 was very good. CCDE Level Intelligence was delivered very we ... Read More

Sameer Meher

Solutions Architect at 23 Wards/Japan

I passed the CCDE Lab exam thanks to Orhan. Orhan's CCDE Course is great CCDE Resource. The course i ... Read More

Tharak Abraham

Network Architecture | Engineering | Consulting | CCDE # 2019::5

If anyone wants to understand network design and architecture, also pass CCDE exam , I recommend you ... Read More

Ken Young

Senior Technical Architect Province of Nova Scotia, 2xCCIE #41597 | CCDE #20170047

Orhan did an excellent job of filling in the gaps of knowledge that I had that took me to the finish ... Read More

Matt Cross

Technical Architect at Heartland – CCDE #2019::7

Orhan, I came, I learned and now I got my CCDE number! For those who prepare for the CCDE Practic ... Read More

Dmytro Osmachka

CCDE #2019::10

Just passed the CCDE Practical exam! I attended Orhan Ergun’s CCDE training program, used Orhan's ... Read More

Shiling Ding

Sentinel Technologies - CCDE #2019::12

Hi everyone, I've just passed the CCDE Exam. My Number is CCDE 2018::6 I attended to Online CCDE ... Read More

Abelardo Basurto

Solutions Architect at Cisco Systems - CCDE 2018::6

Hi guys, I'm so happy that I passed the exam. I've already got my number CCDE 2018::1. Thanks to ... Read More

Hady Mohamed Abdellah

Network Architect Hamad International Airport Qatar - CCDE 2018::1

Thanks Orhan , I passed the CCDE Practical exam! I really enjoyed your CCDE materials, quizzes , lab ... Read More

Bryan Bartik

Sr. Systems Engineer at CompuNet - CCDE 20170059

I attended Orhan's CCDE Training in Istanbul and it was very helpful in my preparation. I passed the ... Read More

Giedrius Trapkauskas

Network Solutions Architect at Liberty Global - CCDE 20180004

I passed the CCDE Practical/Lab exam! I registered to Orhan’s training in Feb 2017. From that time ... Read More

Alaa Issa

Sr.Solutions Architect - CCDE#20180033 3xCCIE ( Collab|DC|Security )#27146