Hello there! It has been a long time since my last post. Currently I am dealing with EVPN VxLAN and managed it to run a demonstration on my small modest virtual lab environment.
One of my first posts in this blog was about how to run VxLAN over an IPSEC Tunnel using a Fortigate firewall. This setup has some limitations when it comes to scalability or performance. In this case we are gonna see a very simple design and implementation using a spine & leaf architecture and unicast to replicate our data across the network.
There are still a lot of legacy DC running spanning-tree out there. It is not a crime doing it, since the network should meet customer requirements without adding unnecessary complexity. But… imagine you are running a financial network and your network flow relies on STP. You will face two challenges:
- The convergence time between failure and recovery are possibly to high.
- You will have some interfaces in the blocking state, which will impede you to use all the BW available in the network. More precisely you will end up with a lot of unused ports.





