Virtual Private Networks (VPNs) 11-19About ATMP TunnelsTo set up an ATMP tunnel, you create a Connection Profile including the IP address and other relevantinformation for the remote ATMP partner. ATMP uses the terminology of a foreign agent that initiates tunnelsand a home agent that terminates them. You use the same procedure to initiate or terminate an ATMP tunnel.Used in this way, the terms initiate and terminate mean the beginning and end of the tunnel; they do not meanactivate and deactivate.ATMP is a tunneling protocol, with two basic aspects. Tunnels are created and torn down using a sessionprotocol that is UDP-based. User (or client) data is transferred across the tunnel by encapsulating the clientdata within Generic Routing Encapsulation (GRE). The GRE data is then routed using standard methods.ATMP configurationATMP is a Datalink Encapsulation option in Connection Profiles. It is not an option in device or link configurationscreens, since ATMP is not a native encapsulation. The Easy Setup Profile does not offer ATMP datalinkencapsulation. See the User’s Reference Guide for information on creating Connection Profiles.The WAN Event History screens will report VPN tunnel events, such as connections and disconnections, asChannel 4 (and higher) events.To define an ATMP tunnel, navigate to the Add Connection Profile menu from the Main Menu.MainMenuWANConfigurationAdd ConnectionProfileAdd Connection ProfileProfile Name: Profile 1Profile Enabled: +-------------++-------------+Data Link Encapsulation... | PPP |Data Link Options... | Frame Relay || ATM FUNI || ATMP |IP Profile Parameters... | PPTP |+-------------+ADD PROFILE NOW CANCEL
