We discussed LAG (Link Aggregation Group) and the ECMP (Equal Cost Multipath) on real network deployments with the Service Provider/Telco Engineer engineers on my slack group.
I thought it was good discussion so you can see what others are doing and the reasons of their deployments. Read more
What does P router mean in MPLS ? It is used in MPLS VPN networks mostly but can be used with any MPLS application, use case.
4 Main, Key Design Principles of Mobile Networks – I will explain the 4 key design principles of cellular networks in plain English. Read more
Wireless ISPs also known as WISP mostly use unlicensed frequency spectrum. Frequency spectrum is the most critical asset for the Mobile and Wireless networks and it is sold in auctions for 100s of millions of dollars.
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 this course as there was new scenarios and the technologies after August 29, 2017 CCDE Practical/Lab exam.
When you register for this course, you will have Self Paced CCDE Training and Self Paced Service Provider Training for free.
Also attendees will have two of my books; CCDE In-Depth and Service Provider Networks.
You probably heard my free retake offering. When you register for Istanbul Onsite training, you will be able to attend other Online CCDE Trainings such as October 16 – 25 Webex, for free.
Please know that, four days after this training, there is a CCDE Practical/Lab exam and you can attend the exam in Istanbul. Let me help you to pass !
Just for Istanbul/Turkey CCDE Training, until September 15, 50% discount is valid. Please don’t ask for a discount after September 15, 2017.
For more information : sales@orhanergun.net
Course agenda and registration please click here
Orhan Ergun’s CCDE Training is the most recommended CCDE Training in the World. You can talk with the existing CCDEs for the feedback.
What are the changes in 2017 CCDE Practical/Lab exam ? Read more
IS-IS Overload Bit – Why IS-IS Overload bit is used ? What are the use cases ? In this post, I will explain the Overload bit which is an important feature of IS-IS routing protocol.
What is attachment circuit in MPLS VPN ? Definitions are important in networking, if there are alternative usages of the definition, better to know them all for effective communication.
BGP Route Reflector in Plain English, in this post, I will explain you the BGP Route Reflector basics, after you read this post, you will be able to answer many questions regarding BGP Route Reflectors.
Last 5 days anymore for the August 2017, CCDE Practical/Lab exam. Read more
IPv6 Business drivers can be many and different businesses have different reasons to deploy IPv6 on their network.
IPv6 is more commonly deployed in the Service Providers than Enterprises or Small Medium Businesses. Do you know why ?
Main reason is IPv4 address space exhaustion. There is no available public IPv4 addresses in the RIR (Regional Internet Registries). Thus, when Service Providers want to allocate an IPv4 address to their customers, one of their options is to deploy IPv6.
There are many other reasons to deploy IPv6 in both Service Providers and the Enterprises and I explained many IPv6 business drivers in the below video, along with Provider Independent and the Provider Address Blocks.
Also, understanding Provider Independent (PI) and Provider Assigned (PA) address blocks is important because there are some design tradeoffs.
I explained these two topics, IPv6 Business Drivers and the PI/PA Address Blocks on my youtube channel in the below video.
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. Read more
Network Interconnections is one of the most important topics for the operator network as it directly related with the cost of the sending traffic out from their networks.
BGP Route reflector routing loop arise in IP networks. In this post, I will illustrate the topology which will loop the IP packets between the routers and I will describe multiple possible solution and share a best practice to design BGP Route Reflector in an IP network. Read more
This is a case study which provides a detailed design steps for IGP protocol on hypothetical Internet Service Provider, called Ausnet.
MPLS Traffic Engineering Fast Reroute Link Protection – I will explain it in plain English and the most important point of MPLS TE FRR Link Protection among other Fast Reroute mechanisms.
GLBP stands for Gateway Load Balancing Protocol. In this article, I will explain where GLBP is used , where it shouldn’t be used with the topologies. Read more
Is Inter-AS MPLS VPNs commonly deployed ? In real-life deployment which Inter-AS MPLS VPN Option is most common ? What are the use cases of Inter-AS MPLS VPNs ? This is not a theory post , I will share practical information with you. Read more
I used to receive many queries on design of website and we did few changes. Read 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 step is taken by Cisco.
Below message sent by Pearson to the CCDE Practical exam candidates who registered for the August 2017 exam. Read more