Bgp

This month RFC 10005 quietly became a Proposed Standard.

Brad Gorman’s ARIN workshop laid out where routing security stands today, ROAs you can trust, ASPA shipping, BGPSec quietly retired.

I sat in Brad Gorman’s RPKI workshop at CHI-NOG 13 with the kind of attention you give a talk when somebody on stage just admitted the security model has known holes.

I’ve been building networks for nearly thirty years. I understand leaf-spine fabrics, BGP design, VRF isolation, ECMP, and congestion management.

BGP Communities has to be one of my favorite features added to the BGP protocol.

Before we get into the how, let’s talk about the why.

Most enterprise networks use BGP to peer with their Internet Service Providers if they want to be multi-homed.

Previous thoughts on load balancing BGP were that it is not a load balancing protocol and in order to achieve any sort of balanced traffic you would have to perform some sort of route balancing.

At times, the ‘rules of BGP’ don’t fit the needs of our productions networks. When we get into today’s production networks how often do book configurations apply? I’ll tell you one thing.

One of the most common questions I get concerns path selection within the router.

For some, BGP is a rather large obtrusive beast of a protocol that scares them half to death.