Explanation/Reference:
Explanation:
L2TPv3 defines the L2TP protocol for tunneling Layer 2 payloads over an IP core network using Layer 2 virtual private networks (VPNs). Benefits of this feature include the following:
*Simplifies deployment of VPNs.
*Does not require Multiprotocol Label Switching (MPLS) virtual private network (VPN).
*Supports Layer 2 tunneling over IP for any payload.
*Supports data encapsulation directly over IP (IP protocol number 115), not using User Datagram Protocol (UDP)
*Supports point-to-point sessions, not point-to-multipoint or multipoint-to-point sessions
*Supports sessions between the same Layer 2 protocols, for example Frame Relay-to-Frame Relay or ATM-to-ATM.