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

Fast Convergence and the Fast Reroute – Definitions/Design Considerations in IP and MPLS

Fast Convergence and the Fast Reroute Network reliability is an important design aspect for deployability of time and loss sensitive applications. When a link, node or SRLG failure occurs in a routed network, there is inevitably a period of disruption to the delivery of traffic until the network reconverges on the new topology.

Is IPV6 Dual-Stack really a best method for IPv6 design ?

There are mainly three IPv6 transition methods; Dual-Stack, Tunnelling and Translation. Careful engineers can understand the difference between IPv6 migration and IPv6 transition.

What is IPv6 Dual stack? What does IPv6 dual stack exactly mean?

What is IPv6 dual stack ? From some questions and comments on the website, I understand that there is a confusion about it. So, what does exactly dual stack IPv6 mean ?

Settlement-Free Peering Requirements

Settlement-Free Peering Requirements.

What is happy eyeballs ?

This term is very important to understand if you are deploying dual stack IPv6 network.

Network Design Best Practices – Simplicity

Network Design should be simple! Simplicity is the first network design best practice that I want you to remember. If you have been in the field long enough, you have probably heard about the KISS principle.

Are you an Intelligent fool ?

Most fundamental network design attribute should be simplicity.

Is Inter-AS MPLS VPNs commonly deployed ?

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.

MPLS Traffic Engineering Fast Reroute Link Protection

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.

IPv6 Business Drivers and PI/PA Address Space

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 ?

What is PLR – Point of Local Repair in MPLS Traffic Engineering ?

What is PLR, Point of Local Repair in MPLS Traffic Engineering ?

PLR is the term is used in the context of Fast Reroute. I briefly mentioned from PLR in the MPLS Traffic Engineering Fast Reroute Link Protection post earlier and in this post, will explain it in more detail.

Broadband Network Architecture – Access Network Models

There are many broadband services Service Providers offer to their customers today. As a network engineer you need to know the most common services and their advantages, disadvantages, design characteristics and so on.

What is Last Mile and First Mile?

What is last mile and first mile ? This is an important telecommunication term which is used in all broadband communication methods. In this post, I will explain the term, differences and some detail about this term.

Network Complexity

Network complexity plays a very important role during network design. Every network designer tries to find the simplest design.

What is MP-BGP – Multiprotocol BGP

MP-BGP (Multiprotocol BGP) is an extensions to BGP protocol. Standard BGP only supports IPv4 unicast address family, whereas MP-BGP supports more than 15 different BGP address families.

Inter AS Option B – Design Considerations and Comparison

Inter AS Option B is highly scalable, reasonably secure, but operationally complex inter autonomous MPLS VPN architecture.

Inter AS Option A Design Considerations and Comparison

Inter AS Option A is the easiest, most flexible, most secure Inter autonomous system MPLS VPN technology.

Keeping the Cisco CCDE Exam Secure!

One of the most important thing about CCDE exam is security. We all think that it is secure, it is not cheatable. There is no CCDE dump. We all believe that. CCDE exam has been around for more than 10 years and there are still only less than 500 people in the world. It seems what we think about exam security is correct.

Is LISP (Locator Identity Separation Protocol) Dead?

Today, there are many networking technologies which haven’t been widely deployed. And among them are Internet Multicast and IPv6 although these two protocols have many benefits .