SLIP frames IP packets and performs data flow along serial lines on a dial-up connection where the transmission speed of the line is between 1200 bps and 19.2 Kbps.
SLIP (Serial Line Internet Protocol)
SLIP has no addressing, packet type identification, packet compression, error detection, and correction features in the transmission line, but it is easy to implement.
With the growth of the Internet, personal computers are now included in global networks, and therefore two basic modem protocols have been developed, SLIP and PPP, which enable this communication to be carried out.
SLIP is old technology and was first introduced in 1984. At that time, it was implemented and used on Berkeley and Sun Microsystems Unix platforms.
In the following years, with the further development of personal computers and support for TCP/IP, the use of SLIP in personal computers also increased.
A connection between the two locations is made via a modem over telephone lines using frequency modulation that can convert digital data from a computer into analog signals.
Thanks to the SLIP connection, it is no longer necessary for a PC to be connected to a central system connected to the Internet, as it is easier for computers to communicate with IP.
In short, with the development of this protocol, Internet services have been provided directly to personal computers.
With this protocol support, users can physically connect to central computers via a dial-up connection, and users who connect can also transparently access other central computers and thus act as a part of the Internet infrastructure.
Differences Between SLIP and PPP
The Serial Line protocol has no other role than integrating legacy modem protocols into a TCP/IP packet. This is a simple Internet connection protocol that does not provide addresses or debugging, and for these reasons, it is an older protocol than PPP.
PPP is a much more advanced protocol than SLIP in terms of transferring additional data over the Internet. Hence, PPP is not limited to the Internet and TCP/IP so it can accommodate other network technologies.
PPP uses a negotiation mechanism to establish communication parameters between its two connections, and perform error detection, detect and discard packets in damage. It also compresses and encrypts data traffic.
It increases security by first authenticating between two users before initiating data communication.
As a result, PPP has the same functionality as SLIP but is a newer and more robust protocol.