What Is the Serial Line Internet Protocol?

Serial Line Internet Protocol (English: Serial Line Internet Protocol, abbreviated as SLIP, also translated as Serial Line IP Protocol ), also known as Serial Line Interface Protocol (English: Serial Line Interface Protocol), serial protocol , a Internet Protocol, used to connect between a serial port and a modem, can establish a wide area network. Defined in RFC 1055, but it is not a standard protocol for the Internet. In computers, SLIP has been widely replaced by Point-to-Point Protocol (PPP) because PPP has many better features and does not require IP address configuration before a connection is established. But in the microcontroller, because SLIP has a very small packaging header, it is still the preferred way to encapsulate IP packets.

Serial Line Internet Protocol (English: Serial Line Internet Protocol, abbreviated as SLIP, also translated as Serial Line IP Protocol ), also known as Serial Line Interface Protocol (English: Serial Line Interface Protocol), serial protocol , a

Point-to-Point Protocol (PPP) works at the data link layer (from the perspective of the OSI reference model). It is usually used to create a direct connection between two nodes and can provide connection authentication, transmission encryption (using ECP, RFC 1968), and compression.

PPP is used in many types of physical networks, including serial lines, telephone lines, trunk links, mobile phones, special radio links, and fiber optic links (such as SONET).

PPP is also used on Internet access connections (now called broadband ). Internet service providers (ISPs) use PPP to provide users with dial-up access to the Internet. This is because IP packets cannot be transmitted by modem lines without a data link protocol. The two derivatives of PPP, PPPoE and PPPoA, are widely used by ISPs to create digital subscriber line (DSL) Internet service connections with users.

PPP is widely used as a data link layer protocol for connecting synchronous and asynchronous circuits, replacing the obsolete Serial Line IP Protocol (SLIP) and telephone company-owned standards such as LAPB in the X.25 protocol family. PPP was designed It works with many network layer protocols, including Internet Protocol (IP), TRILL, Novell's Internet Packet Exchange Protocol (IPX), NBF, and AppleTalk. ^[1]