Orhan Ergun
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Orhan Ergun
orhanergun.net New Design – New Price !
This is a great news everyone ! Now you will enjoy your CCDE preparation much more than before: orhanergun.net has a new fancy design and a new membership price for the most special network design content! You won’t believe but it’s ONLY $349 per year! Besides, it means that the investment in your career is […]
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How fast is your network?
You always wonder how fast is your network, right? How long does it take the information travel over the network? I will share with you this special article, which you can use to find the speed of your network and define it with a numerical number. I will use ring, partial mesh and full-mesh physical topologies to […]
The post How fast is your network? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net/newwp.
How fast is your network?
You always wonder how fast is your network, right? How long does it take the information travel over the network? I will share with you this special article, which you can use to find the speed of your network and define it with a numerical number. I will use ring, partial mesh and full-mesh physical topologies to […]
The post How fast is your network? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
How fast is your network ?
How fast is your network ? You always wonder how fast is your network right ? How long does it take the information travel over the network ? I will share a special article for you which you can use to find the speed of your network and define it with a numerical number. I will use […]
The post How fast is your network ? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | OrhanErgun.net.
OSPF Area Types
OSPF Area Types – Different Areas in OSPF are used to create smaller fault domains. There are two OSPF area types in total. OSPF Backbone area and OSPF non-backbone area Backbone area in OSPF is Area 0. OSPF prevents loop by using backbone area concept.All the non-backbone areas should be connected to the Backbone area. There […]
The post OSPF Area Types appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net/newwp.
OSPF Area Types
OSPF Area Types – Different Areas in OSPF are used to create smaller fault domains. There are two OSPF area types in total. OSPF Backbone area and OSPF non-backbone area Backbone area in OSPF is Area 0. OSPF prevents loop by using backbone area concept.All the non-backbone areas should be connected to the Backbone area. There […]
The post OSPF Area Types appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Pim Sparse Mode
Pim sparse mode – Multicast is used to send the data to the multiple receivers at the same time. Multicast reduces the load on the servers (Senders/Source in multicast term), provides efficient capacity usage on the network links. Figure – 1 Unicast vs Multicast Flows Multicast runs on top of UDP. Multicast uses Class D […]
The post Pim Sparse Mode appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Last 5 Days to Enjoy the DesignWorld Subscription Discount
Hello Everyone As you all know, the DesignWorld is a place where you can find network design videos, articles, quizzes, and comparison charts. Currently, only CCDE resources are there, but the good news is that other courses will be added, too. In addition, CCDA and CCDP courses will be added. There was a promotion for the […]
The post Last 5 Days to Enjoy the DesignWorld Subscription Discount appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
OSPF LSA Types
OSPF LSA (link state advertisements) are used to create a logical network topology. But Why we have 11 different LSAs ? What are their purposes ? Most important questions many time is not asked by the engineers thus you can’t find many places on the Internet which provides these answers. The reason of having 11 […]
The post OSPF LSA Types appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
MPLS Design Case Study
MPLS Design – MPLS Design Case Studies are the useful resources to learn the design details of MPLS. You will be provided a brief information about the business and technical requirements. You can share your answer at the comment section below. Note: This is only one of the case studies in the DesignWorld. DesignWorld provides […]
The post MPLS Design Case Study appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
April 2016 CCDE Bootcamp
CCDE Bootcamp – This is an Online Cisco CCDE exam preparation training. Probably you all know the success of Orhan Ergun’s CCDE Bootcamps and how it has been helping so many engineer become a better network engineer/designer. If you don’t know, please just take a tour on the website. Check the Success Stories, Why Orhan and […]
The post April 2016 CCDE Bootcamp appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
BGP Design Case Study
Below BGP design case study is taken from the Orhan Ergun’s CCDE Practical Workbook.In the new version of the workbook there are more than 50 case studies are shared for many technologies. If you are in the network design field or want to learn about it,don’t miss the book. Scenario : Network A is a customer […]
The post BGP Design Case Study appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Why Should You Place Less Emphasis on MPLS Traffic Engineering
If I input MPLS traffic engineering on any search engines, I will find about 100 articles on the internet providing the same explanations about MPLS traffic engineering. But unfortunately, nobody ask these questions: do I really need it? What are the reasons behind the implementation of MPLS Traffic Engineering? Would it worth the time and energy […]
The post Why Should You Place Less Emphasis on MPLS Traffic Engineering appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
EIGRP vs OSPF
EIGRP vs OSPF – Below comparison table is your primary resource for the OSPF and EIGRP routing protocols when you compare them from the design point of view. Knowing and understanding these design practices will not only help you for the real life network design but also will help for the any design certification exams. If you […]
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MANET: Mobile Ad Hoc Networks
The MANET stands for mobile ad hoc network; in practice, the term generally applies to ad hoc wireless networks of sufficient complexity that some internal routing mechanism is needed to enable full connectivity. The term mesh network is also used for MANETs. MANET nodes communicate by radio signals with a finite range, as in the Figure – […]
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What is Routing Loop and How is Routing Loop Prevented ?
A potential problem to packet forwarding is a possibility of a routing loop. It occurs because some packets circulate endlessly due to the set of entries in the forwarding table. Figure – 1 For example, in the Figure -1 we would have a routing loop if, for (nonexistent) destination G, A forwarded to B, B forwarded to D, D forwarded to E, E forwarded to C, and C […]
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IS-IS Design: Avoiding Traffic Blackholing
IS-IS, a link state routing protocol, requires careful attention during network design in order to avoid traffic blackholing. In the topology below, IS-IS routing protocol is used. The primary path is the blue link. Using IS-IS, the overload bit signals the BGP. If the overload bit is set on Router B, Router A does not use router B as […]
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Datacenter Design: Shortest Path Bridging
IEEE 802.1aq Shortest Path Bridging (SPB) uses IS-IS as an underlying control plane mechanism that allows all the links in the topology to be active. In sum, it supports layer 2 multipath. SPB is used in the datacenter; however, it can also be used in the local area network. In this article, Figure-1 will be used to […]
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Dual Carrier MPLS VPN Design
For the purpose of high availability, critical locations of company A – a customer of VPN service provider – is connected to two different carriers. However, this connectivity requires an important design consideration. Figure-1 In the network design shown above, customer AS 64512 is connected to two different providers: AS100 and AS200. Since this site is critical to the […]
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