Tunnels

Layer 2

  • L2TP
  • PPP
  • VLAN

Layer 3

  • Mapping of Address and Port with Encapsulation (MAP-E)

  • Lightweight IPv4 over IPv6

    • An Extension to the Dual-Stack Lite Architecture

  • GENEVE

  • VXLAN

Segment Routing

  • IPv6
  • MPLS

Generic Routing Encapsulation (GRE) * GRE over IPSEC * GRE over IP * MPLS * NSH