• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Chapter 16. The Internet > What Is PPP?

What Is PPP?

The previous section’s discussion of the TCP/IP protocol explained that TCP/IP is actually a four-layer protocol, with the lowest layer (the link layer) handling the actual low-level communications. The generic link layer for TCP/IP communications is designed to use networking hardware, and therefore uses drivers specific to that hardware.

The Point-To-Point Protocol (PPP) was designed for TCP/IP communication over serial interfaces, such as modems. It is a more sophisticated, secure successor to other serial TCP/IP protocols such as SLIP (Serial Line Internet Protocol) and CSLIP (Compressed SLIP). Using a modem to connect to the Internet via PPP requires a different link layer, one that includes devices drivers for serial devices and for receiving and transmitting packets over those devices. PPP automatically assigns an Ethernet address and supplies related information, such as router and Domain Name Server addresses, when a connection is established. Ethernet addresses are relinquished when a PPP connection is terminated.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint