What Is the Link Control Protocol?
Link Control Protocol (LCP). It is a subset of the PPP protocol. In PPP communication, the sending end and the receiving end send LCP packets to determine those necessary information in data transmission.
- Chinese name
- Link control protocol
- Foreign name
- Link Control Protocol
- Short name
- LCP
- Nature
- It is a subset of the PPP protocol
- Check the identification of the linked device to decide whether to accept or reject it.
- Determines the number of packet bytes that can be received in a transmission.
- Check whether the configurations on both sides match, and if they do not match, the link is broken. Data can be networked only if LCP packet links are available.
- Character-oriented synchronization protocol
- Bit-oriented synchronization protocol
- Byte-oriented synchronization protocol
- Link Control Protocol (LCP). It is a subset of the PPP protocol. In PPP communication, the sending end and the receiving end send LCP packets to determine those necessary information in data transmission.
- Before establishing communication over a point-to-point link, the end of each point-to-point link must issue a Link Control Protocol packet. Regardless of whether the Link Control Protocol packet connection accepts its equivalent connection authentication, their packet size restrictions are the same, and they have the same error control. Basically, the link control protocol packet checks the connection of the link to see if it can support data transmission at the expected transmission speed. Once the LCP packet accepts this link, the transmission will take place in the network; if the LCP cannot handle the transmission task, it will abort the link.
Link Control Protocol Overview
- Link control protocol, English is called Link Control Protocol, LCP for short. It is a subset of the PPP protocol. In PPP communication, the sending end and the receiving end send LCP packets to confirm
- Before establishing communication over a point-to-point link, the end of each point-to-point link must issue a Link Control Protocol packet. Regardless of whether the Link Control Protocol packet connection accepts its equivalent connection authentication, their packet size restrictions are the same, and they have the same error control. Basically, the Link Control Protocol packet checks the connection of the telephone line to see if it can support data transmission at the expected transmission speed. Once the LCP packet accepts the link, the transmission will take place in the network; if the LCP cannot handle the transmission task, it will abort the link. [1]
Link Control Protocol
- The work of LCP agreement includes:
Link Control Protocol Classification
- Asynchronous protocols use characters as independent information transmission units. At the beginning of each character, the bits in the characters are synchronized, but the interval between characters is not fixed (that is, the characters are asynchronous). . Since the two agreed clocks in the transmitter and receiver that are approximately the same frequency can be synchronized for a short period of time, the clock synchronized at the beginning of the character can be used to sample the bits in the character without the The bits are then synchronized using other methods.
- The "start-stop" communication protocol introduced earlier is typical of asynchronous protocols. It uses the start bit (logic 0) and stop bit (logic 1) to achieve the delimitation of characters and the synchronization of bits within characters. In the asynchronous protocol, since redundant bits such as the start bit, check bit, and stop bit are added for each transmitted character, the channel utilization rate is very low, and it is generally used in occasions with low data rates.
- The synchronization protocol uses data blocks organized by many characters or many bits as a transmission unit, and maintains a fixed clock in the frame at the beginning of the frame. Because the frame is used as the transmission unit, the synchronization protocol can use the channel more efficiently, and it is also convenient to implement functions such as error control and flow control.
- Synchronization protocols can be divided into the following three types: