MPLS Transport Profile (MPLS-TP) Basic Explanation and Key Points
MPLS Transport Profile (MPLS-TP) Multi-Protocol Label Switching Transport Profile (MPLS-TP) is a new technology developed jointly by the ITU-T and the IETF. The key motivation is to add OAM functionality to MPLS in order to monitor each packet and thus enable MPLS-TP to operate as a transport network protocol. Motivations for MPLS Transport Profile […]
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Quality of Service Best Practices
Quality of Service Best Practices What is best practice ? Below is a Wikipedia definition of best practice. This apply to education as well. A best practice is a method or technique that has been generally accepted as superior to any alternatives because it produces results that are superior to those achieved by other […]
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Interdatacenter broadcast control – ARP Proxy in OTV and EVPN
When it comes to multi domain or Inter datacenter communication, minimizing the broadcast traffic between the datacenters is an important scaling requirement. Especially if you are dealing with millions of end hosts, localizing the broadcast traffic is critical to save resources on the network and the end hosts. Resources are bandwidth , CPU , memory […]
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Feb 2017 -5 people passed the CCDE Practical exam with my courses
I am glad to announce that below 5 attendees passed the CCDE Practical Lab exam in February 22, 2017 after attending my CCDE Training Program and/or Self Paced CCDE Training got their CCDE numbers. Kim Pedersen Pramod Nair Avinash Gupta Laurent Metzger Concepcion Diaz Cantarero Read the below feedbacks from the people who passed the CCDE […]
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10 Most Popular articles of 2016 on orhanergun.net and statistics
Below is the Google Analytics page views for the articles between January 1st 2016 and January 1st 2017. I didn’t include Home page , CCDE Course and the CCDE E-book pages but just the technical articles. If you haven’t looked at some of those yet, I recommend definitely read them now. BGP Route Reflector […]
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Free Webinar – DMZ Anywhere.Let’s talk about DMZ security design options
This is a free webinar but requires registration and seats are limited thus please register immediately. Webinar on Tuesday, February 28, 2017 7:00 PM – 8:30 PM AST. REGISTER Agenda Introduction to Security Zones What’s DMZ? Why do we need DMZ? Physical vs Logical Network Segmentation Emerging Technologies (Virtualization, Micro Segmentation) Benefits of DMZ Anywhere […]
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February 2017 CCDE Training is over ! Waiting the attendees success now !
My February 2017 CCDE class is now over. The duration of the course was for 11 days and as usual it started with lots of advanced technology lessons. All the critical CCDE exam topics (IGP, BGP , MPLS and the other technologies) were covered in detail from the design point of view. A minimum of […]
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Nothing Should Stop You!
As many of you know, I was born in Turkey. And unfortunately, the educational system of that country is very weak. And guess what: If you can’t afford to go to private school in Turkey, you may not be able to learn English in the government school. However, if you are a very diligent student, […]
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This made me smile :)
Have a great day and hope it makes you smile as well ?
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MPLS over IP Encapsulations and Comparison between MPLS over LSP
Do you need an LSP for MPLS ? In this post, I will go through below topics. This is one of the points which network engineers struggle to understand as I have seen. What is an LSP (Label Switched Path) ? What was the purpose of having LSP in the first place? Do we need […]
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Should I use Cisco OTV for the Datacenter Interconnect ?
Should I use Cisco OTV for the Datacenter Interconnect? This question comes from not only from my students but also the companies which I provide consultancy. I will not go through the OTV details, how it works, design recommendations etc. But let me remind you what is OTV and why OTV is used , Where […]
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Tier 1, Tier 2 and Tier 3 Service Providers
Tier 1,Tier 2 and Tier 3 Service Providers What is tier in the first place ? If you are dealing with Service Provider networks, you hear this term a lot. But how we define Tier 1,Tier 2 and Tier 3 Service Providers ? What should be their infrastructure to be seen as Tier 1 for example […]
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Is Fate Sharing bad thing in network design ?
Is fate sharing bad thing in network design? Someone asked this question recently on my youtube channel and I want to share a post for the website followers as well. First of all, what is fate sharing ? Below is the Wikipedia definition of fate sharing. ” Fate-sharing is an engineering design philosophy where related parts of a […]
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Keeping the Cisco CCDE exam secure !
One of the most important thing about CCDE exam is security. We all think that it is secure, it is not cheatable. There is no CCDE dump. We all believe that. CCDE exam has been around for more than 8 years and there are still only less than 400 people in the world. It seems […]
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Packet loss with Fast Reroute
Packet loss with Fast Reroute Do we still lose packet with fast reroute? One of my students asked me this question. And I would like to share the answer with everyone. Before we discuss whether or not we lose packet with fast reroute mechanisms, let’s remember what fast reroute is. It is pertinent to know […]
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Is LISP (Locator Identity Separation Protocol) Dead?
Today, there are many networking technologies which haven’t been widely deployed. And among them are Internet Multicast and IPv6 although these two protocols have many benefits . But probably people are asking the correct question. Do we really need new protocol ? Or can we solve our problem with the existing mechanisms deployed on our […]
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Introduction to VPN (Virtual Private Network)
Introduction to VPN (Virtual Private Network) Let’s start with the definition. VPN is a logical network and created over shared physical infrastructure. Shared infrastructure can be private such as MPLS VPN of a Service Provider or over the Public infrastructure such as Internet. There are many concepts to understand VPN in detail but in this […]
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Orhan Ergun 2017 CCDE Training Agenda
CCDE Training Agenda of 2017 If you have any question or comment please don’t hesitate to ask in the comment box below. 2016 & 2017 CCDE TRAINING AGENDA Bootcamp Type […]
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I discussed some IP Mobility solutions including LISP
Couple days ago I discussed some IP Mobility solutions, including LISP (Locator Identity Separation Protocol) with the CCDE students. Basically all IP Mobility solutions work in a similar way. New location of the host Address needs to be learned either via routing system or authoritative server. Host information is called identity and it can be MAC […]
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