Layer 3 VPNs - Part 1

Sun, 05 Apr 2026 08:21:27 -0400

I’m currently studying for JNCIE-SP, and lately I’ve been going in depth with L3VPN topologies and configurations. Throughout my studies I’ve found that I have frequently had to bounce between multiple resources to find the answers that I’m looking for, which is part of the reason I wanted to start this blog. In this post, I’ll go over the basics, but over the series we’ll get into all the wonderful and sometimes not-so-wonderful varients that you should try at home (just maybe not in production).

L3VPN on Swap Pop & Roll

Layer 3 VPNs - Part 1