Orhan Ergun

Author Archives: Orhan Ergun

Telecom Operator Network Design Training

I missed writing , missed writing a post lot on the website specifically !. Because I know you are reading right now and wonder where I have been.   I just checked and seen that my last post was on October 26. More than 2 months , I didn’t share anything on the website. I …

The post Telecom Operator Network Design Training appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Telecom Operator Network Design Training

I missed writing , missed writing a post lot on the website specifically !. Because I know you are reading right now and wonder where I have been.   I just checked and seen that my last post was on October 26. More than 2 months , I didn’t share anything on the website. I …

The post Telecom Operator Network Design Training appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

What does hot potato routing mean? Why hot potato routing is important?

What does Hot Potato Routing mean ? Why hot potato routing is important ? What is the default policy of the Internet Service Providers ? In which case Hot Potato Routing is not wanted ? I will explain these questions and more in this post.   What does Hot Potato Routing Mean ?   If …

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CCDE October Online Class is starting, why CCDE from Orhan Ergun ?

CCDE October Online Instructor Led Class will start today. My Online CCDE Classes are 10 days, everyday around 4 hours. But really, let’s be honest, can you understand everything in 10 days ? So, can you pass the CCDE Practical exam just studying this 10 days course ?   No. No. Even if you are […]

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CCDE October Online Class is starting, why CCDE from Orhan Ergun ?

CCDE October Online Instructor Led Class will start today. My Online CCDE Classes are 10 days, everyday around 4 hours. But really, let’s be honest, can you understand everything in 10 days ? So, can you pass the CCDE Practical exam just studying this 10 days course ?   No. No. Even if you are …

The post CCDE October Online Class is starting, why CCDE from Orhan Ergun ? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Microwave or Fiber which one is faster ?

Microwave or Fiber which one is faster ? I will explain  the faster connectivity option and some of the use cases for each, deployment considerations a bit in this post. Why latency is important for some special businesses  ? Have you heard about HFT (High Frequency Trading) ? If you like the discussion points, after […]

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CCDE Practical Exam Dates 2018

Below is the CCDE Practical/Lab exam dates for 2018.   As you might know there are four exam yearly. You can attend maximum four times. You don’t have to pass any exam other than CCDE Written Qualification exam to be able to attend CCDE Practical/Lab exam.   For the cost, registration process , refund and […]

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IP Fast Reroute, LFA and Remote LFA Discussion for real network deployment

IP Fast Reroute , LFA (Loop Free Alternate) , Remote LFA and in general recovery and protection discussion. In this post, I will share the discussion with one of my slack group member, Driss Jabbar. He is a CCDE and highly skilled network engineer and also author of some posts in this website. You can […]

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Update for the Free Network Engineers Group

A while ago, I created a slack group for the network engineers. Some of you might be a part of the group and have been enjoying, learning, discussing the networking topics, real life deployments, for a while.   I wanted to say that, I started to extend the group. It started initially for the Telco, […]

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Why submarine cable , why not satellite ?

Why submarine/subsea cables rather than satellite. Story between my friend who is from finance background and myself.     Today, one of my friends who is totally foreigner to our industry,  visited me at home. It was a family dinner actually and as I said, He is not a network engineer but just a curios […]

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What is convergence in different field of networking ?

What is convergence ?   This term has different meaning for different networking groups. In this post, I will explain the two most common usage. This kind of knowledge definitely will differentiate you from the others ?   If you are a layer 3 person, I mean if you are familiar with routing, most probably […]

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What is last mile and first mile ?

What is last mile and first mile ? This is an important telecommunication term which is used in all broadband communication methods. In this post, I will explain the term, differences and some detail about this term.   In fact, last mile and the first mile is the same thing.   The link between the […]

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What is Deadlock situation in MPLS Traffic Engineering ?

What is deadlock situation in MPLS Traffic Engineering ? What happens when deadlock occurs ? Is there any mechanism to prevent deadlock ? I will explain all the details in this post.     Deadlock occurs when LSP needs to move to the other link but due to lack of available bandwidth cannot move to […]

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What is MP – Merge Point in MPLS Traffic Engineering ?

What is MP, Merge Point in MPLS Traffic Engineering ? Understanding Merge Point in MPLS Traffic Engineering will help you to understand the MPLS TE – Fast Reroute   MP (Merge Point) is the term is used in the context of Fast Reroute. I briefly mentioned from Merge Point in the MPLS Traffic Engineering Fast Reroute Link Protection post earlier and in this […]

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What is PI and PA ? Provider Independent and Provider Assigned ?

What is PI and PA ? Provider Independent and Provider Assigned ? In this post, I will explain the important considerations on PI (Provider Independent) and PA (Provider Assigned).     In this post, I will explain below points :   What is PI and PA ?  Why PI and PA addresses are used ? […]

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What is happening to the World !! Shall we expect World War ?

Lots of stupid things I am hearing everyday anymore, which affect my business and affects so many people I think. Will World War III start or what ?   Couple months before I think at least it was , six countries announced that they closed their borders and airspace for Qatar, a country where I live. […]

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Bin Packing Problem of Distributed Traffic Engineering

Bin Packing Problem ? What is Bin Packing ? I will explain in this post Bin Packing Problem in MPLS Traffic Engineering.       Very complex post normally but I will make it simple for you. And trust me, it is important to understand.   Before I start explaining Bin Packing problem, let’s just […]

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What is IRU ? Indefeasible Right of Use ?

What is IRU (a.k.a Indefeasible Right of Use)  ?  If you are working in the Operator, Service Provider or Telco/Carrier networks, you probably heard this term. If you haven’t, you need to learn it.   Note: This content is received from my Telecom/Service Provider Course. You can join the course and learn much more about […]

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2G is still the most common Mobile network technology

2G is still the most common deployed mobile access technology. It is hard to believe but as per my discussions with probably more than twenty Mobile Operators, 2G , especially GSM is the most common mobile access technology.   Almost all those twenty Mobile operators deployed 3G and LTE and some of them deployed LTE Advanced as well, […]

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