[c-nsp] Easy question about connecting LANs over WANs

[Scott Voll]

I have a Core 4506e that connects to a 3845 (layer 3) that connects to a
2821 (also layer 3)

I have a VLAN connected to the 4506 that I would like to extend to a vlan
off the 2821.

What is the best way to do this?  GRE tunnel?  Will DHCP go across it?

Thanks

Scott