Latest At Orhan Ergun LLC
Check out latest Activities and News From Orhan Ergun Network Consultancy and Training ,LLC
Check out the closest CCDE Training Bootcamp:
|Apr 01 – 10 2019||(11 days in a row)||Online/Webex|
|Apr 26 – 30 2019||(5 days in a row)||Onsite/Istanbul|
|June 14 – 18 2019||(5 days in a row)||Onsite/San Diego USA|
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HSRP, VRRP and GLBP are the three commonly used first hop redundancy protocols in local area networks and the data center. In this post, I will briefly describe them and highlight the major differences. I will ask you a design...
I have just decided to schedule my next online class for the February 2016 CCDE Practical exam preparation because of three reasons. One is the high level of demand for my early CCDE bootcamps; the other is the overwhelming number...
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. (more…)
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...
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...
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. (more…)
I am excited as today, 2017 CCDE April Online (Webex) class is going to start. Actually , there is only half an hour and we will start. Every day will be 4 hours and minimum 11 days it will take....
Dubai 5 days Instructor Led Bootcamp just finished. Attendees were from Spain, Bahrain , Saudi Arabia, India and Abu Dhabi. (more…)
As you know May 11 2017 exam has been cancelled. I shared the details in this post. Cisco took very hard decision but saved the CCDE certification. I have been suggesting that new scenarios should be added for a long...
Recently I initiated a knowledge sharing group on Slack. Goal of the group is just a knowledge sharing. What technologies, protocols, equipments are other people using in the in their networks, what are their services , what are their paint...
I have been very busy for last one month. I announced 2 , 3 months before Service Provider Design Workshop and conducted it at last two weekends. I moved to new house, lot's of things to deal with,...
I recently made an interview with networkcareer.net I talked with Daniel many things on networking, brief overview of my story , predictions for the future of networking, recommended community platforms for the network engineers and many other things ! (more…)
As you might know May 2017 exam was cancelled due to leakage and I shared a post on it on May. It was very important step taken by Cisco to secure the exam. Now, it seems another important...
I used to receive many queries on design of website and we did few changes. (more…)
Recently, I published Self Paced Service Provider Training Course. I didn't make an Internet wide announcement yet as I still upload the content to the course. (more…)
Last 5 days anymore for the August 2017, CCDE Practical/Lab exam. (more…)
What are the changes in 2017 CCDE Practical/Lab exam ? (more…)
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...
MPLS protocol uses labels to forward traffic between point A and B. These labels are binded to FECs and distributed on the network by means of different protocols like (LDP, RSVP, BGP-LS, SPRING). LDP (Label Distribution Protocol "RFC5036") is still...
Nowadays there are some technologies which every vendor talk about. SD-WAN is very hot topic but another one is Intent Based Networking. (more…)
MPLS VPN and Segment Routing. Many people have been asking what are the differences between MPLS VPN and Segment Routing. (more…)
What is Network Discovery and Mapping? As networks are growing and getting more dynamic, mapping and documenting the devices that are connected to our network will be harder and much time consuming. I know paper work and the network documentation...