OSPF Prefix Suppression helps to company to use 200 routers in their network without any problem. You can think that, some companies use more than 200 routers in their OSPF network, why this post is special? You will understand why in 10 minutes.
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.
OSPF Design Challenge – OSPF and MPLS is most commonly used two technologies in an MPLS VPN environment. In this post I will share a mini design scenario with you and ask couple questions about the fictitious company architecture.
OSPF Design Discussion – In the below picture, where should you place an OSPF ABR (Area Border Router) to scale OSPF design ? Why ?
IS-IS Suboptimal Routing – If you design multi level IS-IS network and if you have more than one exit (L1-L2 routers) from the Level 1 domain, you will likely create a suboptimal routing. Multi-level IS-IS design is for large-scale network. What’s more, most of the real life networks use only flat Level 2 IS-IS as …
I was in London last week for CCDE Training. During the training, there was a discussion on Financial network design and one of the students explained how they designed their financial world-wide network.