We have a MPLS network our ISP provides us with. It is a /20 network.
Now we want to have several vlans but we don't want to tell our ISP every time we need a vlan so we want to create all our vlans on our Layer 3 switch.
Our ISP tells me they will on their router point the entire /20 network to our Layer 3 switch. And so we can subnet the /20 network the into the subnets we like.
So I guess as long as I subnet using /21 /22 /23 /24 this is possible?