ip internet protocol

Internet technology in wireless networks. At the same time, the huge interconnectivity of the global Internet is a great incentive. Because small devices such as sensors are often required to be small and cheap, the implementation of network protocols must handle limited computing resources and memory. This article describes the design and implementation of a small TCP/

IntroducedIn a system called Catenet, the IP protocol is used as a host to the host datagram service. A network connection device is called a gateway. These gateways exchange information for control through gateways to Gateway protocols (GGP). Typically, a gateway or destination host communicates with the source host, for example, for reporting errors in the datagram process. ICMP is used for this purpose,

What is TCP/IP? TCP/IP is a communication protocol for computers connected to the Internet. TCP/IP refers to the Transmission Control Protocol/Internet

What is the TCP/IP protocol. first, the TCP/IP model The TCP/IP protocol model (transmission Control protocol/internet Protocol) contains a

This chapter describes the basis of the TCP/IP protocol cluster. IP routing ensures that the correct transmission path can be found for the datagram. If it cannot be found, the sender will be notified of a failure to issue the message. The information used in the route finding process is maintained in two ways: each host maintains its own route table (print the c

1. TCP/IP protocol stack Four-layer modelTCP/IP This protocol adheres to a four-tier model concept: The application layer, the transport layer, the interconnect layer, and the network interface layer.Network interface LayerThe base of the model is the network interface layer. Responsible for the transmission and recep

1. UDP: A transport layer protocol for user datagram. Unreliable and connectionless. 2. header (8B in total): source port number (2B), destination port number (2B), UDP length (2B), UDP checksum (2b) Note: (1) for UDP port numbers, the port numbers are used to mark the application process. TCP and UDP can share a port number, which can be distinguished by protocol fields in the

Wan WanTCP/IP is generally considered to be a four-layer protocol system, including The link layer includes the ARP,RARP protocol, which includes the NIC driver in the operating system and the corresponding network interface card, which processes the details of the data transmission between the cables, which is within the same link network and communicates th

Reprint article Source address: http://zhangjiangxing-gmail-com.iteye.com/blog/646880 TCP /IP protocol differs from the UDP protocol TCP (transmission Control Protocol, transmission protocol) is a connection-oriented protocol, whi

implementation is that RARP requests are broadcast on the hardware layer, which means that they are not forwarded by the router. In order for the diskless system to boot in the state of the RARP server shutdown, it is usually possible to provide multiple RARP servers on a single network (such as a cable).As the number of servers increases (to provide redundant backups), network traffic increases as each server sends a RARP response to each RARP request. Diskless systems that send RARP requests

soon as possibleRST: Re-establish the connectionSYN: The synchronous sequence number is used to initiate a connectionFIN: The originator completes the task6.16bit window Size: TCP Traffic control is the use of this window size. The window size is the number of bytes.7.16bit inspection and: first and data inspection and. Similar to the UPD, a pseudo-header support calculation is required.8.16bit Emergency pointer: The emergency hand is only valid if the Urg is 1.9. Options: The most common is th

Application layer: (Typical device: application, such as FTP,SMTP, HTTP)The DHCP (Dynamic Host Configuration Protocol) dynamically host assignment protocol, which works with UDP protocol, has two main uses: to automatically assign IP addresses to internal networks or network service providers, For users or internal net

the UDP header, and the UDP header length is typically 8 bytes. The checksum is an optional option for the UDP protocol and is generally not required.In general, the UDP protocol has the following characteristics:1. No connection, no connection is necessary before data transfer2. Maximum possible delivery, i.e. no guarantee of reliable transmission3. For message transmission, the transmission is UDP packet

This article describes the IP protocol required to understand routing issues. Most things on the internet use the IP protocol. Different from Ethernet, understanding this protocol is very important for understanding network applic

Layer-7 network protocol functions layer functions in the TCP/IP family OSI TCP/IP protocol family www.2cto.com Application Layer file transmission, email, file service, virtual terminal TFTP, HTTP, SNMP, FTP, SMTP, DNS, RIP, Telnet presentation layer data formatting, code conversion, data encryption no

Summary and relationship between TCP/IP and http protocols 1. The IP protocol is not oriented, but provides data links as best as possible. Www.2cto.com 2. TCP is a connection-oriented, full-duplex protocol that provides reliable data transmission. Understanding the full duplex feature makes it easy to understand the T

Settings" selection: Dynamic IP, in the wireless connection settings to enter their own wireless network name and password (no less than 8 digits), click "Connect." Step Two: The router is connected to the Internet, please wait a moment! Step three: Congratulations, now connected to the internet! click "Finish Setup." Jump to

One; prefaceThe people who have learned the TCP/IP protocol have a feeling, this thing is too abstract, there is no data instance, after reading soon forget. This article will introduce an intuitive learning method, using the Protocol analysis tool to learn TCP/IP, in the process of learning to visually see the specifi

ICMP is (Internet Control message Protocol) Internet controlled message protocol. It is a sub-protocol of the TCP/IP protocol family that is used to pass control messages between

A Send a connection request and wait for confirmation A, b Established Both establish a connection The four-time handshake close link is as follows:The specific steps are as follows:1.A send fin message, Mark Seq=m2.B after receiving fin message, send confirmation message, Mark Seq=m+1Fin messages are also sent after 3.B, labeled Seq=n4.A after receiving fin message, send confirmation message, Mark Seq=n+1At this point the two sides are disconnected, and