The answer was another encapsulation protocol, PPPoE (PPP over Ethernet). PPPoE runs the PPP protocol over an Ethernet connection, in contrast to the original PPP, which runs it over a serial modem connection (usually a dialup modem)
PPPoE allows users to connect to their broadband ISPs with Dial Up Networking the same way theyd connect to a POTS or ISDN ISP connection. It lets ISPs use the tools that have worked with PPP users for years to validate logins and passwords, track network log in and log out and even kick users off the network if theyve been on it for too many consecutive hours using that connection.
Many but not all broadband ISPs use PPPoE. For example, DSL-based ISPs who make use of this technology include Ameritech and Earthlink. Because PPPoE technology improves resource management for ISPs, expect to see it used by more and more ISPs as broadband connections become more popular.
This concludes our discussion of common remote access technologies and protocols. Next, we will move into the area of network-to-network communications using wide area networking.
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