What Is The Full Form Of PPP?
The full form of PPP is Point-to-Point Protocol.
PPP is a protocol of communication of the (layer 2) DLL (data link layer). It transmits multiprotocol data between two point-to-point (directly connected) computers. The protocol is byte-oriented and works well in broadband communications with high speeds and heavy loads. It encapsulates higher network layer protocols to pass through asynchronous and synchronous lines of communication.
PPP is also Windows’ default RAS (Remote Access Service) protocol. And the data transmission occurs in frames due to DLL. It also bolsters various non-TCP/IP protocols, for instance, the SPX/IPX and DECnet. The PPP protocol offers various options of configuration to make it a robust option for exemplifying data over the leased lines.
PPP also underpins verification used at either end of a point-to-point association for confirming client identity. The PAP (Password Authentication Protocol) and CHAP (Challenge Handshake Authentication Protocol) deploy on the Cisco router for validation. ISPs use the two most common derivatives of PPP- the PPPoE (Point-to-Point Protocol over Ethernet) and PPPoA (Point-to-Point Protocol over ATM) for establishing a DSL with customers.
Services Provided by PPP
- It defines the frame format of the data that needs to be transmitted.
- PPP defines the procedure behind establishing a link between both the points of data exchange.
- It states the method of network-layer data encapsulation in the frame.
- It states the authentication rules over the devices involved in communication.
- PPP provides various connections over a variety of links.
- It supports multiple network layer protocols with a range of services.
Components of PPP
PPP uses three components to transmit data over serial links. Every part has an autonomous role. Here are the components:
- HDLC (High-Level Data-Link Control) protocol – It is a method that frames data over PPP links. The standard version of OSI is used in place of the proprietary version of Cisco. The standardization here ensures that different vendors properly communicate the PPP executions.
- LCP (Link Control Protocol) – The protocol is liable for formulating, sustaining, testing, configuring, and terminating the links of transmission. Two endpoints of connections additionally impart negotiation to set up alternatives and use features.
- NCPs (Network Control Protocols) – These frames communicate and customize Network layer protocols. One can use it over the PPP session. One NCP is present for every higher-layer protocol upheld by PPP. The function of NCPs is to enable PPP to work over an analogous connection with many Network layer protocols.
Benefits of PPP
- One of the main benefits of PPP is that it’s a suite of protocols.
- It can feasibly and dynamically negotiate various IP Addresses.
- PPP bolsters authentication by CHAP and PAP.
- The feature of quality management of links evaluates the quality of links.
- PPP easily takes down the links with too many errors.
- It follows a modus operandi of checking errors for each PPP frame.
- PPP contains LCP (Link Control Protocol) to develop link options.
- On a single serial connection, PPP can easily transport several protocols.
Limitations of PPP
- It is a very complex protocol.