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The point to point and why it can benefit a business. The following article gives reasons why point to point could benefit your business.
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The Point-to-Point Protocol, or PPP, is commonly used to establish a direct connection between two nodes (computers, servers, routers, etc.). It can connect computers using a serial cable, phone line, trunk line, cellular telephone, specialized radio links, or fiber optic links. Most Internet Service Providers (ISP) use PPP for customers' dial-up access to the Internet.
PPP was designed to enable the transmission of different protocols over one point-to-point link by utilizing encapsulation. Encapsulation is the process of storing packets from the different protocol inside PPP frames.
PPP is more stable than the older SLIP (Serial Line Internet Protocol, is a mostly obsolete encapsulation of the Internet Protocol designed to work over serial ports and modem connections) and provides error to check features. Besides giving error checking, PPP also supports multiple protocols, allows IP addresses negotiated at connection time, permits authentication, and many others.
The main three features provided by PPP are:
To establish communications over a point-to-point link, the originating PPP first sends LCP frames to configure and (optionally) test the data link. After the connection has been established and optional facilities negotiated as needed by the LCP, the originating PPP sends NCP frames to choose and configure one or more network-layer protocols. When each of the selected network layer protocols is in place, packets from each network layer protocol delivers over the link. The link will remain configured for communications until explicit LCP or NCP frames close the connection, or until some external event occurs (for example, an inactivity timer expires, or a user intervenes).
A key advantage of PPP is that it is an extensible protocol suite. Over the years new protocols have been added to the suite, to provide additional features or capabilities. For example, PPP is designed not to use just a single authentication protocol, but to allow a choice of which protocol uses for this purpose. Windows Server 2003 and Windows XP support the following PPP authentication protocols: 1. PAP: Password Authentication Protocol 2. CHAP: Challenge-Handshake Authentication Protocol
PPP is capable of operating across all types of interfaces. PPP does not impose any restriction regarding transmission rate other than those imposed by the particular interface in use.
In summary, the Point-to-Point Protocol is a multi-protocol framing mechanism suitable for use over modems, serial lines, and other physical layers. It supports error detection, option negotiation, compression, and reliable transmission.
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