I've been looking online for this answer, but getting conflicting information. I was under the impression that you couldn't use a VLAN across a router, but maybe it's possible (according to some documentation I see online)? I was hoping someone could clear it up for me. Here's what I'm working with:

We have a remote site with a handful of users. We recently gave them an access point (Cisco 1142n) for internal wireless. It's plugged into a switch and working fine (getting IPs from the same DHCP scope as the wired users are getting). Private wireless is set on VL50.

At the home office we have private wireless for our internal network working and on VL50, with a test VLAN setup for VL60, which points to our DSL line for the time being. Both private and public wireless works fine internally (not crossing a router). VL50 is named the same at both sites for consistency in naming.

If we wanted to give the remote site access to the public wireless (VL60), would that be possible across the routers? For more information, currently the site is connected to the home office via a T1 connection, Cisco routers on both ends.

I didn't think it was possible due to the nature of VLANS being layer 2. But, I am from from an expert on this and would appreciate any instruction as to the actual truth of the matter.

The end result I'm going for is, how to get our remote sites access to a public (outside) connection along with their private connection, without actually having a DSL (or similar type line) dropped at their location?

Thanks in advance for your thoughts.