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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

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

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

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

After I attended Orhan Ergun’s CCDE course I passed the CCDE practical exam.I really enjoyed the course a lot.

Before I signed up I didn’t know what to expect but it’s for sure a great design course and preparation for the CCDE exam. Mainly because of the interaction with Orhan who is really an expert in explaining all the different technologies and making perfect designs out of them.

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 Ergun’s CCDE Bootcamp was the most important resource in my success.If you want to nail down CCDE, you need to think as a designer. You need to change your mindset and understand all the technologies in the CCDE Blueprint.Orhan’s resources cannot even comparable with the any CCDE Training provider in the industry.I would highly recommend the Orhan’s CCDE Bootcamp for anyone who want to pass CCDE exams and understand the real life network design

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 the use-cases, quizzes, scenarios, and mind maps are all great resources in the overall training program. Orhan teaches his customers to think like a network designer by applying technology to meet business requirements and design specifications

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 years, instead he is providing a new fancy design hat, which makes you see and deal with the issues presented. At the beginning of this CCDE course you many times are sitting thinking ‘I could solve this issue with some fancy trick/feature’, all because you keep thinking implementation. However as the course goes on Orhan is helping you to fill your new fancy design hat with all the important information not only for designing, meeting business requirements, but also dealing with the interaction of the protocols. If you’re trying to get your head into a new hat, chasing the CCDE exam, or just wants to get on top with network design, I would go to Orhan today

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 helped me a lot to pass the both CCDE Written and Practical exams.Design comparison charts and videos will help you a lot in CCDE Practical exam. The quizzes in the self paced CCDE course is excellent resource for the CCDE Written exam.If you are studying for CCDE exam or want to learn network design,I strongly recommend you to take this course.

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 recommended reading list and CiscoLive videos focused on design.But your preparation won’t be complete without a touch of Midas from the master CCDE trainer Orhan Ergun. He is the most complete training provider in the industry – Books, Blogs, Videos, Bootcamps, One-to-one chat, etc.Self Paced Course is a best offline CCDE resource !

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 the technologies go together in a coherent design i can highly recommend it.I also enjoyed the Quizzes which helped pick out my weak spots in selecting an appropriate design. So if you are serious about either learning more about the design aspects of networking or you are going for the CCDE practical, you should take a hard look at Orhan’s Self-paced Training option.

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 design concepts. After a long number of reading books and watch all the Cisco Live design sessions, this class was definitely the advantage i needed to take and pass my CCDE lab. Thanks Orhan for your all supports.

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 CCDE Training course and it was very helpful in my success. Thank you very much.

Laurent Metzger

3xCCIE/CCDE Senior Network Architect

Thanks Orhan for your Instructor Led CCDE Bootcamp. It was very informative for CCDE Written and Lab preparations. Personally we used to discuss designs related to production networks (ISP,DC/Enterprise) & I must say he is technically sound in Network Design. I am impressed with your technology comparision charts when it comes to selection of routing protocols, VPN technology solutions etc. I strongly recommend Orhan Ergun’s class if you want to pass the CCDE exam and learn network design

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 engineer to designer. Thanks again Orhan for your Instructor Led CCDE Bootcamp.

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 great deal of experience, it really comes through when he presents his design case studies and the CCDE Practical scenarios.
Thanks Orhan for everything !

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 journey.Also thank you very much for being available whenever I have a design question or a complex design topics. I can’t compare your design skills and training with anyone in the industry. I definitely strongly recommend you whoever wants to understand the network design in detail and wants to pass CCDE exam.Thanks Orhan you were great.

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 life network design.The depth knowledge of Orhan was very impressive. I got all the answer in detail to my questions. One more thing to add I found this boot camp a very useful with everything we talked about, that have opened my mind and gave me a good knowledge. I strongly refer this course to every candidate who is studying for the CCDE exam and want to learn real life Enterprise and Service Provider design CCDA,CCDP

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 quality trainings available and some of those are only available in certain countries and are quite expensive, so decided to purchase Orhan’s training stuff. They are really good inclusive of both explanation of technical concepts and applying the same for practical scenarios keeping in mind the business constraints and objective. Of course its necessary to read lot of other stuff and understand the topic well but I believe Orhan’s training will be much helpful, will help us to know where to focus for CCDE, thus save time and also help us to become a good designer

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 beyond my expectations. I have learned a lot of design principles that I haven’t seen before and I would just say one thing, there are lot of vendors class out there that would help you get your CCDE Number. But from my experience of attending various bootcamps if your goal is to Design Better Networks by understanding all the principles on Looped and Routed networks, Orhan is the person you should definitely approach. You will not be able to get everything out of this 8 sessions class, but he teaches you the procedure and methodology also provides tones of scenarious. Thank you, Sir Orhan Ergun Online CCDE Sessions for inspiring and helping me to be a better designer engineer. Jeriel Atienza 3x CCIE# 24263 (R/S, VO, SP)

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 CCDE & Also in your work environment. I recommend my friend and colleagues to join Orhan once to get the great knowledge about Network Designing. CCIEx4 (RS, SP, Voice, Datacenter)

Avinash Gupta

Solution Architect at Zensar Technologies

I was glad attending Orhan online CCDE class last year. The manner he delivers the topic and explains each of our questions gave us the core fundamental functionality in-depth of the technologies. Which in result strengthen my network design skill either in the environment of service provider, enterprise and data center. The session helped me improve on how to understand and translate the business requirement into technical requirements CCIE#29481

Jigz Bagsic Jr

Senior Network Engineer at Alinma Bank/Saudi Arabia

Your excellent CCDE materials and amazing Bootcamp helped me tremendously through my learning journey. Thank you Orhan and more power to you! CCIEx2 (SP, Datacenter)

Tony Vu

Technical Specialist at Optus

I attended Orhan’s CCDE Bootcamp and it was great. He contributed immensely to our knowledge by developing core curriculum and providing instructional support which are both futuristic in nature and conform to CCDE standards. What I found to be Orhan’s best asset was his ability to utilize appropriate language and positive discipline to manage effective interactions with his students. As a model of appropriate behavior, he is in a league of his own and can provide extra instructional support based on individual student assessments. Every aspect of his teaching is innovative to say the least; instruction, Assessment, interaction, communication, documentation, administration and classroom management are just some of his areas of expertise as far as teaching is concerned.I am confident that he would contribute effectively to your CCDE. CCIEx2, CCDP

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 introduction to the CCDE. You have to show up to class and be ready to ask questions as this is the only true way to get out what you put in. This class will give you a good idea of where you are and where you need to be to complete the CCDE. Orhan did a good job of talking about CCDE and design and showing you all the pieces you will need to put together to be successful not only in the exam but in the real world. CCNP,CCDP

Garry L. Baker

Author at Packetpushers

Thanks Orhan very much for this course. It helped strengthen my “Network design mind”. I enjoyed the whole sessions of Orhan CCDE bootcamp course, which was very successful and interactive. Orhan CCDE bootcamp course is designed aimed for CCDE, which materials were comprehensive and extremely well organized. Orhan has been brilliant in bridging the gap between the knowledge of technology and the business strategies from design perspectives. The whole sessions delivered insightful views in each teach topic with various case studies. Orhan did carefully build up diagrams that presenting the ideas of designs so that the attendants could understand what was going on even things getting more complicated. Furthermore, Orhan has a good range of various case studies and that made course not only more interesting but really helped for realizing design concepts from the base of network knowledge. Orhan is an enthusiastic and supportive instructor, always provides helps/advice to learners anytime needed. CCIE SP #47047

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 are dealing with designing networks in their daily basis. Orhan’s CCDE training gives detailed understanding not about field implementation of technology such as IOS commands,debugs etc, but it gives you understanding about how technology works, or which technology to choose in particular busines case, when,why and how to design it’s architecture. And after that Orhan guide you through “what-if something fails”cases, which are gives you more deep understanding about information you must take in consideration in you further technology selection and designing process to be sure that you network will not just work, but also will be stress resistant. Highly recommended for the network engineers,designers and solution makers. You will get live lectures, discussions and mentor which is always ready to help you and even discuss topics that are not covered in CCDE but are really important in design process. CCNP/CCDP/CCSP

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 well and with very user friendly approach. Its a good Design Study which was been delivered,in understandable format . It is certainly helping me to transform in the world of Network Engineering.

I definitely recommend Orhan’s CCDE class to people who wants to learn network design.

Sameer Meher

Solutions Architect at 23 Wards/Japan