Route where you can , switch where you must – Is it true ?

Route where you can , switch where you must. If you are from networking background most probably you heard this many times. But is it true or like anything else, does it depend on the situation and other parameters ?   Yes, you are right, it depends.   When you hear a quote , at […]

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Free Knowledge Sharing Group for Service Providers !

Recently I initiated a knowledge sharing group on Skype. Goal of the group is just a knowledge sharing. What technologies, protocols, equipments are other people using in the in their networks, what are their services , what are their paint points and benefits of using particular technologies and so on. Currently group has around 100 […]

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Submarine Cable Basics

Submarine Cable is probably the most important topic for the International traffic. More than 99% of the International traffic , including data, voice and video is carried over Submarine Cables.   But still submarine cables is not very well known topic among the network engineers, especially if you are not working in the Service Provider, […]

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Last 10 days for the Service Provider Design Workshop

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What is Urban and Rural area in networking ?

What is urban and rural area ? What is underserved area in networking ?   These definitions are heavily used in networking. And all broadband network designers take always these definitions into an account while they do their design. I think knowing these definitions as a network engineer is valuable for you.    In general, […]

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Is there a Global Tier 1 Provider in the World ?

Is there a Global Tier 1 Internet Service Provider in the World ? Who are the biggest networks in the World ?    In the Peering article I explained what is peering , different types of peering such as private and public peering , settlement free peering , paid peering and so on.   To […]

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Some recommendations for the network engineers

In this post, I will share many network engineering blogs which will be very beneficial for the network engineering and for those who want to learn more about network design.     Almost everyday I receive a message through social media or via email from the connections. What should we study ? I am new […]

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What is MPLS Traffic Engineering and Why do you need MPLS-TE ?

MPLS Traffic Engineering is a mechanism that provides cost savings in an MPLS networks.   How cost saving can be achieved  ?  How traffic is steered to the paths which wouldn’t be used in normal circumstances ?  I will explain in this post.   Let’s look at below topology.     MPLS Traffic Engineering    […]

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Windows Firewall ? This made me laugh a lot :)

Do you agree that this is similar to Windows Firewall  ? ? Made my day            

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What makes for a successful protocol ?

What makes for a successful protocol ? Which protocol is successful and why ?   Have you ever been asked these questions  ? As an engineer you cannot say I believe Protocol X is successful or Protocol Y is not.   There is nothing like ‘ I believe ‘. There should always a science behind […]

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Some people who passed the exam on FEB 2017 lost their CCDE !

As you know May 11 2017 exam has been cancelled. I shared the details in this post. Cisco took very hard decision but saved the CCDE certification. I have been suggesting that new scenarios should be added for a long time. Read this post and see why I have been suggesting it.   As you know, […]

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May CCDE Practical exam is cancelled worldwide,all the details !

May 11 2017, CCDE Practical exam has been cancelled worldwide on May 4, 2017.   People reacted differently for this cancellation.   I have 200+ CCDE candidates in my study groups, thus I think I am the person who can provide you the most accurate information about the reaction of the candidates.   Most, if […]

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May 2017 Dubai CCDE Bootcamp Attendees Feedbacks !

Dubai 5 days Instructor Led Bootcamp just finished. Attendees were from Spain, Bahrain , Saudi Arabia, India and Abu Dhabi.   I discussed several real network designs with attendees such as one of the bank networks, one financial institute, couple service provider networks (Belong to these students or they involve designs of these networks)     […]

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April Online CCDE Class is going to start today

I am excited as today, 2017 CCDE April Online (Webex) class is going to start. Actually , there is only half an hour and we will start. Every day will be 4 hours and minimum 11 days it will take. We will go through the theory , best practices and the case studies for many […]

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MPLS Quiz

MPLS (Multi Protocol Label Switching) quiz ! Learn while assessing your knowledge. This quiz is part of the MPLS Review Questions of my new version of CCDE Workbook. There are more than two hundred questions in it and you can have it from the website directly (PDF version) or from Amazon (Hardcopy).  This quiz helps for many certification exams […]

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Service Provider Design Workshop

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What is happy eyeballs ?

What is happy eyeballs ?   This term is very important to understand if you are deploying dual stack IPv6 network.   Before defining happy eyeballs, do you know what is an eyeball network ? Where is it used ? Where does ‘ happy eyeballs ‘ term come from ?    Eyeball is an end […]

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Broadband Network Architecture – Access Network Models

There are many broadband services Service Providers offer to their customers today. As a network engineer you need to know the most common services and their advantages, disadvantages, design characteristics and so on.   In this post, I will introduce these services and if I can see interest from the readers, I will explain the […]

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May 1 – 5, 2017 Dubai CCDE Bootcamp

Next Onsite Instructor Led CCDE Bootcamp will be held on Dubai.    Class will be 5 days, May 1 to 5, 2017.   Everyday we will have 8 hours. It is going to be very intense.   I am going to cover all CCDE Blueprint topics, many scenarios, all you need to pass CCDE Practical […]

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What is Free Retake? I offer Free CCDE Bootcamp Retake

Many people have been asking about Free Retake. I provide Free Retake for my Instructor Led CCDE Training. But what is it ?   Why it is important ?   Who benefit from it ?   Is there a limit for free retake ?     When you register to my Instructor Led bootcamp, which […]

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