What Is The Tunneling In Layer 2 Tunneling Protocol L2TP?

What Is The Tunneling In Layer 2 Tunneling Protocol L2TP? Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet. How does Layer 2 Tunneling Protocol work? Layer 2 Tunneling Protocol