When I asked my readers what they would consider a good use case for EBGP multihop (thanks again to everyone who answered!), many suggested running BGP across a layer-3 firewall (Running BGP across a “transparent” (bump-in-the-wire) firewall is trivial). I turned that suggestion into a lab exercise in which you have to establish an EBGP multihop session across a “firewall” simulated by a Linux host.

If you haven’t set up your own lab infrastructure, click here to start the lab in your browser using GitHub Codespaces. After starting your codespace, change the directory to basic/e-ebgp-multihop and execute netlab up.