A Quick Thought on VXLANs
After attending VMworld this year, I decided I needed to try to understand VXLANs a little better. Based off of the basic concept that it stretches a layer two broadcast domain over layer three networks, I was worried that I knew how this was accomplished. What is VXLAN? VXLAN stands for Virtual Extensible LAN and is a fairly new method of making the datacenter network elastic. Suppose for example that you want to be able to move your virtual machines from your own server room to a co-location and then to a public cloud depending on what the load was on your environment. In order to do this without causing downtime, you’d need a way for your layer two ethernet frames to continue getting from your clients to your servers even, if a router is in that path. ...