TRENDnet TDM-E400 User's Guide - Page 61

Chapter 5. Configuring the WAN Interfaces Configuring PPP Interfaces The Point-to-Point Protocol (PPP) is one of several protocols used to enable communication between ISPs and their customers. PPP handles tasks such as the following: f Identify the type of service the ISP should provide to a given customer f Identify the customer to the ISP through a username and password login f Enable the ISP to assign an Internet address and other IP information to the customer's DSL modem PPP can be used only when your connection with your ISP is a routed connection (i.e., it cannot be used for bridged connections). For more information on bridged and routed connections, see Chapter 6, "Configuring the System Operating Mode." A PPP interface can be either of two types: PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE). Although to the end user they function similarly, the ISP's network may be configured to handle only one protocol type. Furthermore, an ISP may not use the PPP protocol at all, instead offering EoA-type connections (described on page 67). Contact your ISP before changing the preconfigured WAN interface type. Viewing Your Current PPP Configuration To view your current PPP setup, log into Web Configuration, click the WAN tab, and then click PPP in the task bar. The Point to Point Protocol (PPP) Configuration page displays: Figure 18. Point to Point Protocol (PPP) Configuration Page A PPP interface is configured as a group of software settings associated with an ATM VC interface. Each PPP interface is given a name, such as ppp-0, ppp-1. Users typically need only one PPP interface; in some cases, multiple interfaces are created to allow the user to log on to more than one account with the ISP.) 61