Looking for more info on this and its hard to Google since different providers seem to call this service something else and results tend to pull up the provider side topologies which don't really matter for me.
We are looking to connect multiple branches to the main branch. There is already a service in place to do this through our ISP (they call it ELAN) It is a layer 2 connection between all of the branches. At the main site is our main connection out to the internet and it has plenty of bandwidth to go around.
My question is, in this case, should we simply connect a trunk port to the service (each branch has one handoff) and use VLANs to break up the branches. The inter vlan routing being handled at the main site (either the firewall or a nice l3 switch).
Or does this call for each branch to have its own firewall and some routing protocol setup?
I inherited this setup so it was halfway done and while some sites were connected directly another had a brand new firewall which made me question the other setups. (Though the firewall had nothing in place yet)
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