Network Router User Manual

303532-A Rev 00
1-1
Chapter 1
L2TP Overview
The Layer 2 Tunneling Protocol (L2TP) provides remote users, such as
telecommuters, mobile professionals, and personnel in remote branch offices,
with dial-in access to a corporate network. L2TP enables users to create a virtual
private network (VPN), which uses the existing physical infrastructure of a public
network, such as the Internet, but offers the security and exclusivity of a private
network.
This chapter contains the following information:
Topic Page
L2TP Benefits
1-2
What Is Tunneling? 1-2
Components of an L2TP Network 1-4
L2TP Packet Encapsulation 1-8
Making a Connection Across an L2TP Network 1-9
Security in an L2TP Network 1-10
Bay Networks L2TP Implementation 1-11
Where to Go Next 1-17