Point to Point Connection/Protocol in Computer Networking

There are different network architectures which can be used to design a network. A number of Topology including Mesh Topology, Bus Topology, Star Topology and Ring Topology

Definition of Point to Point:

Point-to-Point network is one of them. This is the simplest network architecture which involves just two nodes. Each node is directly connected to the other with one connection line.

Point to Point Connection / Protocol:

Computer Networking includes a protocol called Point to Point where direct connection established between two computer or two nodes.  The protocol provides connection authentication, transmission encryption (using ECP, RFC 1968), and compression.

point to point is used over many types of physical networks including serial cable, phone line, trunk line, cellular telephone, specialized radio links, and fiber optic links such as SONET. PPP is also used over Internet access connections. Internet service providers (ISPs) have used PPP for customer dial-up access to the Internet, since IP packets cannot be transmitted over a modem line on their own, without some data link protocol. Two derivatives of PPP, Point-to-Point Protocol over Ethernet (PPPoE) and Point-to-Point Protocol over ATM (PPPoA), are used most commonly by Internet Service Providers (ISPs) to establish a Digital Subscriber Line (DSL) Internet service connection with customers.

point to point is commonly used as a data link layer protocol for connection over synchronous and asynchronous circuits, where it has largely superseded the older Serial Line Internet Protocol (SLIP) and telephone company mandated standards (such as Link Access Protocol, Balanced (LAPB) in the X.25 protocol suite). The only requirement for PPP is that the circuit provided be duplex. PPP was designed to work with numerous network layer protocols, including Internet Protocol (IP), TRILL, Novell's Internetwork Packet.

Multipoint connection can be used for fail-over and reliability.

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