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Layer Two Forwarding Last modified: Wednesday, October 31, 2001

Often abbreviated as L2F, a tunneling protocol developed by Cisco Systems. L2F is similar to the PPTP protocol developed by Microsoft, enabling organizations to set up virtual private networks (VPNs) that use the Internet backbone to move packets. Recently, Microsoft and Cisco agreed to merge their respective protocols into a single, standard protocol called Layer Two Tunneling Protocol(L2TP).

Cisco's Layer Two Forwarding Page Includes links to news releases, technical tips, and articles. Solutions for Virtual Private Dialup Networks White paper from Cisco Systems that describes the L2F protocol. Unofficial L2TP Web Page Contains links to IETF documents and other Web pages related to L2TP.