I have a quick question. Someone gave me some info, and I want to verify it.
QinQ needs to have a switch capable of accepting double tagging ports to be an edge device. I've been told that if you have a network made on switches, only the the ones at the provider edge need to understand double tagging. The ones inside the network only see the outer tag, and do not have to be configured for double tagging.
Is this true, or is this guy full of it?