BGP Goodness and Links

I had my first real experience with playing with regular expressions in BGP this evening to manipulate traffic. In the instance below, I needed to give a lower preference to traffic that was learned from ‘65002’ and was 4 AS hops out. I did this by creating an as-path access-list, using it in a route-map, and applying it to an eBGP neighbor.

While I’m at it, I figured that I share the two links that have helped me the most with BGP. The first is the BGP cheat sheet from The second is an INE blog post on BGP Regular Expressions.

September 25, 2013

Posted In: BGP