mpls – security without obscurity

IS-IS, MPLS-TE, and wide metrics

I came across an interesting topic in the book Traffic Engineering with MPLS yesterday. The topic involves migration from narrow to wide metrics. As you know, wide metrics are required to support MPLS TE, so if you have a network that is currently deployed with narrow metrics (the default) you will have to migrate toContinue reading “IS-IS, MPLS-TE, and wide metrics”

Book Review: Definitive MPLS Network Designs

I have access to safari books through my employer, so I’ll be doing some brief reviews of each book to determine whether or not I’ll be buying it for further study. The first of this series is Definitive MPLS Network Designs. The book contains several case studies that will be helpful in studying for theContinue reading “Book Review: Definitive MPLS Network Designs”

MPLS notes

I took a class this past week for some more formalized MPLS training. I will be posting some notes to remind myself of key ideas. There are a few key take-aways that helped me understand the how and why of MPLS. I knew the basics, like how MPLS uses ‘tags’ instead of layer 3 addressesContinue reading “MPLS notes”