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BGP PIC Fundamentals: BGP PIC (Prefix Independent Convergence) is a BGP Fast Reroute mechanism which can provide sub-second convergence even for the 900K internet prefixes by taking the help of...
BGP Weight Attribute is used in Cisco routers. In this post, with the below topology, we will look at why the BGP weight attribute is used, why it BGP weight...
BGP AS Path Prepending or BGP prepend is a common technique for incoming path manipulating. When we want to engineer the traffic coming from another BGP AS to our BGP...
DMVPN Basics- In this article you will learn about the DMVPN design along with various IGP protocols such as EIGRP,OSPF and BGP. I am explaining this topic in deep detail...
BGP Confederation is specified in RFC 5065, which describes the use of Autonomous System Confederations for BGP - Border Gateway Protocol. This topic and many other simple and advanced BGP...
In this post, some of the frequently asked OSPF questions will be answered. Some of the answers will be from a design point of view and we will try to...
OSPF Areas are used for OSPF scalability. In this post, we will look at many different topics about OSPF Area Types — their usage, limitations, and the different router types...
What is KISS Principle ? Okay it stands for Keep it Simple and Stupid but what does really it mean in networking ? Can we really make things simpler ?....
One of the advantages of EIGRP Feasible Successor is that it speeds up the EIGRP. In fact, if there is a Feasible Successor in the EIGRP network, such network converges...
If you are new to Network Engineering and you are learning Dynamic Routing Protocol from scratch, you want to understand the differences between ABR vs ASBR and if there are...
GARP (Gratuitous ARP): Is an ARP message sent without request. Mainly used to notify other hosts in the network of a MAC address assignment change. When a host receives a...
What is ASBR? Autonomous System Boundary Router. This seems easy, it is just used in OSPF, isn't it?. In fact, that is wrong. You will learn in this post something,...