Specifies the Layer 2 Tunneling Protocol (L2TP) IPsec Extensions, which allows IP, IPX, or NetBEUI traffic to be encrypted and then sent over any medium that supports point-to-point (PPP) (Point to Point Protocol [RFC1661]) datagram delivery, such as IP, X.25, Frame Relay, or ATM. This page and associated content may be updated frequently.

Layer 2 Tunneling Protocol : definition of Layer 2 History. Published in 1999 as proposed standard RFC 2661, L2TP has its origins primarily in two older tunneling protocols for Point-to-Point Protocol (PPP): Cisco's Layer 2 Forwarding Protocol (L2F) and USRobotics Point-to-Point Tunneling Protocol (PPTP). A new version of this protocol, L2TPv3, was published as proposed standard RFC 3931 in 2005. L2TPv3 provides additional security features What is Point-to-Point Tunneling Protocol (PPTP Jan 03, 2014 EdgeRouter - OpenVPN Layer 2 Tunnel – Ubiquiti Networks Tunneling Layer 2 Traffic using OpenVPN. Back to Top. OpenVPN will be used to tunnel L2 traffic between the sites. See the OpenVPN Site-to-Site article for more information on setting up OpenVPN.. Follow the steps below to set up the OpenVPN Site-to-Site Layer 2 tunnel: Layer 2 tunnel on 6500 - Cisco Community

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Abstract This document describes the Layer Two Tunneling Protocol (L2TP). STD 51, RFC 1661 specifies multi-protocol access via PPP [ RFC1661 ]. L2TP facilitates the tunneling of PPP packets across an intervening network in a way that is as transparent as possible to both end-users and applications. EoMPLS and Layer 2 Tunneling - Cisco Community The layer 2 vc's are up on both PE's but STP bpdu are notbeing forarded between the 2 CE's.(I have disabled STP for the EoMPLS vlans on the ME3600) PE1 (ME 3600X) int g0/1. port-type nni. switchport trunk allowed vlan none. switchport mode tunk. service instance 2 ethernet. encapsulation dot1q 2. l2protocol tunnel stp. bridge-domain 2. int vlan 2 Introduction to the Tunneling Process

What is L2TP (Layer 2 Tunneling Protocol)?

Tunneling protocol - Wikipedia The Layer 2 Tunneling Protocol (L2TP) allows the transmission of frames between two nodes. A tunnel is not encrypted by default, it relies on the TCP/IP protocol chosen to determine the level of security. 2 Adaptation, Layering, and Tunneling - Grotto Networking The Layer 2 Tunneling protocol (L2TP) solves these issues by providing: A fairly comprehensive tunnel control protocol for the setup, teardown and maintenance of sessions RFC3931. Tunneling over UDP (RFC 3931 section 4.1.2) as well as IP. The UDP option allows for NAT traversal.