Networking Basics – Test2
There are 12 networking questions below. Most of them relatively basic networking questions. Although this post is related with networking basics, click here to solve advanced networking tests. If you liked this test, you will like this too. How was it ? Leave your comment in the comment box.
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Campus Network Design Scenario
In this post I will give you a campus network design scenario and as always will wait your answers. You need to specify what are the mistakes, you need to recommend a technical solutions to Superent which is a fictitious company and don’t forget to give your answers based on customer requirements rather than industry… Read More »
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Networking Quiz
I prepared 14 networking questions for you. There are design and theory based questions. Some questions have only one answer, some of them have multiple. Each correct option is 4 points. This is general networking quiz which includes many different questions. Check other Networking quizzes from here. How was your score ? Did you… Read More »
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Networking Basics – Test 1
There are 10 basic questions below. Most of them relatively basic networking questions. This test can be taken only one time, so take your time, provide your Name and Email so you can be in Leaderboard. If you like this networking basics test,please leave a comment, so I continue to prepare similar tests. After solving this test… Read More »
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What is your opinion about the new blog design ?
As you might notice I changed the blog design, and I want your feedback about the new design from all the points (speed, simplicity, look and feel,etc…). Your suggestion and feedback is highly appreciated to enhance the blog. Did you like it ? Was the old design better ? Based on the comments we will… Read More »
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OSPF Design Test
I shared three OSPF questions below,similar to BGP Design Test published earlier. These are design related, please take your time before giving your answer. In return,I want you to share these test on social media so more people can benefit from it. If you have a problem,confusion with the answers which I provided, let’s discuss… Read More »
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CCIE vs CCDE
Probably one of the mostly asked questions by the networking experts. CCIE vs CCDE. How many times you asked yourself or discussed with someone else about this ? I think many times. right ? I have CCIE Routing Switching and/or Service Provider, should I continue to Design certificates such as CCDE or should I study… Read More »
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BGP Design Test
I will share a network design test bi-weekly for you. These tests will help you for the CCDE Written Exam. You will answer the questions and see the results immediately. If you liked the idea,let me know in the comment box below. Don’t forget to check my CCDE Training which will start at first week of April.… Read More »
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orhanergun.net February 2015 Site Statistics
As a blog which mostly share network design articles and only launched less than 2 months before, traffic to orhanergun.net surprised me. Let’s see the page views,top articles, top countries and top commenters. I am planning to advertise statistics every month, so you can see how the site which you follow/like performs. Statistics show only February… Read More »
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Seamless MPLS Architecture
Seamless MPLS architecture can be used to create very large scale MPLS network, reduces operational touch points for service creation, reduces overall complexity and enable flexible service creation points in the Service Provider networks. Seamless mpls architecture best suited for the very large scale service provider networks which has 10s or 100s of thousands access nodes, very… Read More »
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OSPF Design Challenge
OSPF and MPLS is most commonly used two technologies in an MPLS VPN environment. In this post I will share a mini design scenario with you and ask couple questions about the fictitious company architecture. When you attend to my CCDE class,we will work on tens of scenarios similar to this. I published last week my… Read More »
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OSPF as a PE-CE Routing Protocol
OSPF as a PE-CE routing protocol can be used in the MPLS Layer 3 VPN design between customer and the service provider. If the customer receives an MPLS Layer 3 VPN service , routing protocol is enabled between the customers and the Service Providers. Don’t forget that static routing is a routing protocol ! This VPN… Read More »
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Carrier Supporting Carrier – CSC
CSC Carrier Supporting Carrier is a hierarchical MPLS VPN architecture between the Service Providers. Service is an MPLS VPN service mostly but doesn’t have to be as you will see throughout the post. Customer carrier ( Provider ) receives an MPLS VPN service from the Core/Backbone carrier. Although CSC architecture is not common in real… Read More »
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ASK your questions and SHARE your opinion
I receive lots of questions from my students, readers, customers, followers on network design. I try to answer as quickly as possible and in detail. Thanks to all of them ! I receive a lot of kind emails, messages from them to put my effort on this blog as well. But for many reasons, I… Read More »
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MPLS VPN and DMVPN Design Challenge
MPLS VPN is used mostly as primary connectivity and DMVPN as a backup in the small medium business. You might see in some cases DMVPN is the only the circuit between remote offices and the datacenter/HQ, or for some applications MPLS VPN might be the primary,DMVPN for the others. As an example high throughput, high… Read More »
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SEGMENT ROUTING
Segment routing is a source routing mechanism which provides Traffic Engineering , Fast Reroute, MPLS VPNs without LDP or RSVP-TE. Very simple but powerful solution,when you read the post you will ask more information, because it solves the complex problems with some extensions to existing protocols. MPLS provides BGP free core, VPN services (Layer2 and… Read More »
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DMVPN Dynamic Multipoint VPN
DMVPN is dynamic, scalable and easy to configure Cisco specific VPN solution. DMVPN uses two major technologies for its operation : NHRP Next Hop Resolution Protocol mGRE Multipoint GRE In this post I will explain all the basics of DMVPN. For detailed routing protocol design over DMVPN will be covered in different post which will… Read More »
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BGP Route Reflector Clusters
BGP Route reflectors are used as an alternate method to full mesh IBGP and helps for scaling. BGP Route reflector clustering is used to provide redundancy in an RR design. Route Reflectors and its clients create a cluster. In an IBGP topologies, every BGP speaker has to be in a logically full mesh. Route reflectors… Read More »
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CCDE Training
I am very pleased to announce that my student Hamed Zolghadri passed the CCDE Practical exam in February, and now he has joined the CCDE club
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Do you really need Network Training ?
Certification is cool, opens the door to new companies, positions , maybe to the better roles,you can proud that you have CCIE, JNCIE and so on. Cisco , Juniper , HP, every major companies have certification program and network training is a big business. We all know that ! Have you ever asked yourself, Do […]
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