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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LAG vs. ECMP discussion on real network deployments
We discussed LAG (Link Aggregation Group) and the ECMP (Equal Cost Multipath) on real network deployments with the Service Provider/Telco Engineer engineers on my slack group. I thought it was good discussion so you can see what others are doing and the reasons of their deployments. In this talk, three people involved. Myself […]
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What does P router mean in MPLS ?
What does P router mean in MPLS ? It is used in MPLS VPN networks mostly but can be used with any MPLS application, use case. This is very important node in MPLS, and crucial to understand MPLS. MPLS is one of the most commonly used encapsulation mechanism in Service Provider networks […]
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4 Main Design Principles of Mobile Networks
4 Main, Key Design Principles of Mobile Networks – I will explain the 4 key design principles of cellular networks in plain English. In fact I should have said, cell based systems as mobile networks may not be design based on cell based architecture. Let me explain what would be the other deployment […]
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Discussion with Maldivian Operator Dhiraagu (AS7642)
I discussed the BGP Router Reflector design, Settlement Free Peering , Transit Operator choice, Internet Gateways and the Route Reflector connections, MPLS deployment option at the Internet Edge and many other things with the Operator from Maldives. Operator name is Dhiraagu. Autonomous System Number is 7642. Engineer from the ISP Core team, who is […]
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What is happiness ? Let me show you !
My little , sweet baby girl has just born. This is happiness and I feel totally different now. I am a father of two now ? She says hello to all networking community and father’s friends ?
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Wireless ISPs Spectrum Problem
Wireless ISPs also known as WISP mostly use unlicensed frequency spectrum. Frequency spectrum is the most critical asset for the Mobile and Wireless networks and it is sold in auctions for 100s of millions of dollars. Frequency spectrum is managed by the governments and governments in general, sell frequency spectrum in auctions. And […]
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Istanbul/Turkey Onsite CCDE Training – 50% OFF until Sep-15, 2017
Istanbul/Turkey Onsite CCDE Training will be held between October 30 – November 4. Course will be in English as usual, everyday will be between 9am – 6pm, 9 hours. I am going to extend my CCDE Materials for this course as there was new scenarios and the technologies after August 29, 2017 CCDE […]
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What are the changes in August 2017 CCDE Practical exam ?
What are the changes in 2017 CCDE Practical/Lab exam ? As you might know, CCDE Practical/Lab exam was cancelled on May 2017 due to some leakage. Some people tried to sell the scenarios, Cisco cancelled the exam and revoke the certifications of those who involved with that cheating. Some people among them can be […]
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IS-IS Overload Bit – Why IS-IS Overload bit is used ? What are the use cases ?
IS-IS Overload Bit – Why IS-IS Overload bit is used ? What are the use cases ? In this post, I will explain the Overload bit which is an important feature of IS-IS routing protocol. When a router which runs an IS-IS routing protocol have resource issue (CPU, Memory), device shouldn’t receive network traffic. […]
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What is Attachment Circuit in MPLS VPN ?
What is attachment circuit in MPLS VPN ? Definitions are important in networking, if there are alternative usages of the definition, better to know them all for effective communication. MPLS Layer 2 VPN Topology In the above topology, I share, MPLS Layer 2 VPN Topology. There are many terminology but let’s focus on […]
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BGP Route Reflector in Plain English
BGP Route Reflector in Plain English, in this post, I will explain you the BGP Route Reflector basics, after you read this post, you will be able to answer many questions regarding BGP Route Reflectors. Outline of this post is as below. What is BGP Route Reflector ? Why BGP Route Reflector […]
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What is Colocation, POP , Carrier Hotels and Meetme Room ?
What is Colocation, POP , Carrier Hotels and Meetme Room ? If you are working in operator domain or a network engineer who wants to learn what is colocation , what is POP (Point of Presence) , how POPs are physically connected , POP terminology , understand meetme room and carrier hotel, this post […]
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Unique RD per PE per VRF in MPLS
Unique RD per PE per VRF is a deployment option in MPLS Layer 3 VPN. In this post I will explain the different RD (Route Distinguisher) assignment options and at the end of the post, you will understand why you should assign unique RD per PE per VRF. Why RD (Route Distinguisher) is […]
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Last 5 days for the August 2017 CCDE Practical/Lab exam
Last 5 days anymore for the August 2017, CCDE Practical/Lab exam. As you might know, you can attend only 4 times per year for the CCDE Practical exam. And not in every country ! There are many places around the world, called Professional Person Vue (PPC) exam centers, and as I said, a lot […]
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