L2 and L3 VPN

1. What is the difference between L2 VPN and L3 VPN.

    L2 VPN 

•        ISP devices forward the frames according to L2 information.    (DLCI,MAC,VLAN ID )
•        Enterprise stays in control of L3 policies ( Routing , Q0S)

        
  L3 VPN

•        ISP devices will forward the packets according to L3 information.( IP       addresses)
•        ISP involved in Customer IP routing.
•        IP specific