AIS AI2524 user manual MMP feature uses Vpdn to connect multiple PPP

Chapter 11: AI2524 Sync PPP Configuration Steps

Note:	The MMP feature uses VPDN to connect multiple PPP
	sessions for which individual dial-in calls have arrived on
	different stack group members. VPDN provides speed and
	reliability for the setup and shutdown of Multilink PPP.

Complete these steps to create a a VPDN connection between a remote user and the home LAN:

1.The remote user initiates a PPP connection to the ISP using the an- alog telephone system or ISDN.

2.The ISP network access server accepts the connection.

3.The ISP network access server authenticates the end user with CHAP or PAP. The username is used to determine whether the user is a VPDN client. If the user is not a VPDN client, the client accesses the Internet or other contacted service.

4. The tunnel endpoints—the network access server and the home gateway—authenticate each other before any sessi ons are at tempted within a tunnel.

5.If no L2F tunnel exists between the network access server and the remote user’s home gateway, a tunnel is created. Once the tunnel exists, an unused slot within the tunnel is allocated.

6.The home gateway accepts or rejects the connection. Initial setup can include authentication information required to allow the home gateway to authenticate the user.

7.The home gateway sets up a virtual interface. Link-level frames can now pass through this virtual interface through the L2F tunnel.

Figure 11-2 illustrates a VPDN connection from a remote user, who makes a local call, to the corporate network, through an end-to-end L2F tunnel (shown by the dotted line).

August 1997	Page 11-27
2524UM