Orhan Ergun
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Orhan Ergun
OSPF in a Full-Mesh Topology Design
Flooding in full-mesh topology is a big concern for network-design experts, especially in large-scale OSPF deployments. When the link or node fails in an OSPF network, failure information is flooded everywhere in the same area. If Flat OSPF network design is used, then the problem gets bigger. Each router receives at least one copy of the new information from […]
The post OSPF in a Full-Mesh Topology Design appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
orhanergun.net 2015 review
I’m proud to be the owner of the best computer network design blog and get positive feedbacks from users all over the world. In recent times, I have observed that everybody has been reading this blog. Because of this, I owe all the readers of this blog my achievements. Indeed, your comments and post views have encouraged […]
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EIGRP Hub and Spoke Design
EIGRP Hub and Spoke – EIGRP is the best protocol in Hub and Spoke topologies because of many reasons. In this article, I will explain the design consideration for EIGRP in a Hub and Spoke topology, also known as star topologies. Figure – 1 EIGRP Hub and Spoke In Figure – 1, EIGRP runs […]
The post EIGRP Hub and Spoke Design appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Single Vs. Dual Carrier Design
Companies don’t always have high availability. What’s more, there is always a concern of budget and complexity with the high availability even though a number of factors need to be considered during network design. If the applications of the company do not require high availability, dual carrier or two links to the same carrier is not […]
The post Single Vs. Dual Carrier Design appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
IS-IS Suboptimal Routing Design
If you design multi level IS-IS network and if you have more than one exit (L1-L2 routers) from the Level 1 domain, you will likely create a suboptimal routing. Multi-level IS-IS design is for large-scale network. What’s more, most of the real life networks use only flat Level 2 IS-IS as their interior gateway protocol (IGP).
The post IS-IS Suboptimal Routing Design appeared first on Network Design and Architecture.
Dual Core Network Design
Dual core design, also known as dual plane or disjoint plane topologies, refers to a highly redundant network chosen by companies whose main objective is to improve the resiliency of their network. Created using different data planes, dual core design is implemented by companies that receive the service from the different service providers. Put simply, […]
The post Dual Core Network Design appeared first on Network Design and Architecture.
CCDE and CCAr Certificates – FAQ
CCDE is the de facto expert level, vendor neutral, and infrastructure network design certification in the industry. I have been helping to CCDE community for a while through my packet pushers articles and podcasts. I started couple months before to write about network design and CCDE related articles on my blog http://orhanergun.net as well. […]
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The post CCDE and CCAr Certificates – FAQ appeared first on Packet Pushers Podcast and was written by Orhan Ergun.
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
The post CCDE Training appeared first on Network Design and Architecture.
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 […]
The post Do you really need Network Training ? appeared first on Network Design and Architecture.
OSPF routing protocol
OSPF Open shortest path first is a dynamic routing protocol which creates a topology between the routers to distribute routing information inside an Autonomous system. If you are not familiar with OSPF, don’t worry ! In this article OSPF will be explained in great detail. Are you interested in design aspect of OSPF, many OSPF design examples will […]
The post OSPF routing protocol appeared first on Network Design and Architecture.
CCDE Practical exam preparation – Podcast
Wouldn’t you want to listen the story from the guys who passed the CCDE exam ? What are their CCDE Recommended reading list ? Is there any CCDE Training which they suggest for CCDE Preparation? Which technologies they recommend for the CCDE candidates to focus ?
The post CCDE Practical exam preparation – Podcast appeared first on Network Design and Architecture.
CCDE Practical Exam Blueprint
What is in the CCDE Practical exam blueprint ? If you passed CCDE Written ( 352-001 ) already, practical exam is the only barrier between you and certificate ! Below blueprint is the first step for your CCDE journey. You will know that what are the concepts which you need to be an expert !
The post CCDE Practical Exam Blueprint appeared first on Network Design and Architecture.
Cisco Certified Design Expert ( CCDE ) Written exam topics
You can see CCDE Written Exam ( 352-001 ) blueprint below. For those who want to start their CCDE journey , probably knowing the topics is the first step.
The post Cisco Certified Design Expert ( CCDE ) Written exam topics appeared first on Network Design and Architecture.
CCDE Study Guide – CCDE Preparation Resources for written exam
I am glad to announce that we prepared a streamlined CCDE written exam preparation resources. Today it has been placed on Cisco’s official learning site, Cisco Learning network.
The post CCDE Study Guide – CCDE Preparation Resources for written exam appeared first on Network Design and Architecture.
CCIE R&S,SP,Wireless,Collaboration,Datacenter,Security Preparation Recommendations
Orhan Ergun and Neil Moore talked about CCIE Preparation on the packetpushers podcast. Neil Moore is only 8xCCIE in the world and well known geek and HP fellow. Which exam is the hardest ? What are their advises ? Which certification should be received first, what should be the order ? CCIE vs […]
The post CCIE R&S,SP,Wireless,Collaboration,Datacenter,Security Preparation Recommendations appeared first on Network Design and Architecture.
CCDE Before and After !
Don’t expect technical topic in this post. Instead I wanted to show how was my situation before and after the CCDE – Cisco Certified Design Expert !. Enjoy BEFORE Orhan Ergun ( At the Right, Handsome one ), Neil Moore (Only 8xCCIE in the world at the left) and Brian McGahan ( INE ) at […]
The post CCDE Before and After ! appeared first on Network Design and Architecture.
Community Podcast: 8xCCIE Neil Moore and Orhan Ergun – CCIE Preparation
Neil Moore is the first and only 8 x CCIE in the world. Neil shares his CCIE preparation tricks, study methodology and many other important points.
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The post Community Podcast: 8xCCIE Neil Moore and Orhan Ergun – CCIE Preparation appeared first on Packet Pushers Podcast and was written by Orhan Ergun.
Community Podcast: 8xCCIE Neil Moore and Orhan Ergun – CCIE Preparation
Neil Moore is the first and only 8 x CCIE in the world. Neil shares his CCIE preparation tricks, study methodology and many other important points.
The post Community Podcast: 8xCCIE Neil Moore and Orhan Ergun – CCIE Preparation appeared first on Packet Pushers.
IPv6 in the Enterprise by Jeff Doyle and Orhan Ergun
Orhan Ergun and Jeff Doyle talks about IPv6 design and deployment considerations in the Enterprise networks. They strongly advice you to consider IPv6 deployment in your network. Why IPv6 in the Enterprise , what are the real business drivers for the IPv6 ? Growth of IPv6 in the Enterprise Networks Jeff Doyle’s advices to Service […]
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The post IPv6 in the Enterprise by Jeff Doyle and Orhan Ergun appeared first on Packet Pushers Podcast and was written by Orhan Ergun.
IPv6 in the Enterprise by Jeff Doyle and Orhan Ergun
[player] Orhan Ergun and Jeff Doyle talks about IPv6 design and deployment considerations in the Enterprise networks. They strongly advice you to consider IPv6 deployment in your network. Why IPv6 in the Enterprise , what are the real business drivers for the IPv6 ? Growth of IPv6 in the Enterprise Networks Jeff Doyle’s advices to […]
The post IPv6 in the Enterprise by Jeff Doyle and Orhan Ergun appeared first on Packet Pushers.