hdlc protocol

0 hopopt IPv6 Jump option 1 ICMP Internet control messages 2 IGMP Internet Group administration 3 GGP Gateway to Gateway 4 IP (encapsulated) in IP IP 5 ST Stream 6 TCP Transmission Control 7 CBT CBT 8 EGP External Gateway Protocol 9 IGP any dedicated internal gateway (Cisco uses it for IGRP) Bbn-rcc-mon BBN RCC Monitoring One NVP-II Network Voice protocol Pups Pups ARGUS ARGUS Emcon Emcon Xn

"OSI layer Seven Protocol" Application Layer An application that communicates with other computers, which is the communication service of the corresponding application. For example, a word processor without a communication function would not be able to execute the code of communication, and the programmer working on the word processing did not care about the 7th layer of the OSI. However, if you add an option to transfer files, the programmer of the

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!After a cursory look at IP relays and IP addresses, we turn to the specifics and design philosophy of IP protocols.comparison of IPv4 and IPv6 headWe have already introduced in the IP relay, an IP packet is divided into the header (header) and the data (payload/data) two parts. The head is the additional information necessary to implement IP communication, and the data is the information to be

In the previous article, "Master Programmer's Training: TCP, message subcontracting and protocol design" discusses some of the topic of protocol design, here to add to the HTTP protocol and binary protocol comparison.The HTTP protocol is a text

Swift protocol and swift Protocol The protocol in Swift is also called in object-c, but in other languages it may be called Interface (such as java) or pure virtual function. In fact, it all means. The Protocol is mainly used to define uniform methods and attribute names, but does not implement any functions. Only the

Protocol and proxy, protocol proxy ====================================== Protocols and Proxies ====================================== [Agreement] @ Protocol [Role of the Protocol]: Specifies the interface method to be implemented. An agreement that must be followed by the entrusting party and the agent. Delegate by (

Routing protocol ｡ Area. The unit of the route field ｡ LSDB (Link State DataBase, Link State DataBase). All network connection States constitute a Link State DataBase, and each IS has at least one LSDB. IS uses the SPF algorithm, use LSDB to generate your own route ｡ LSPDU (Link State Protocol Data Unit). In IS-IS, each IS generates an LSP, this LSP contains all the link status information of this IS. Each

TCP (transmission Control Protocol, transmission Protocol) is a connection-oriented protocol,In other words, a reliable connection must be established with each other before sending or receiving data.A TCP connection has to be three "conversations" to build, and the process is very complex and simply describes the simple process of three conversations: A

Chapter Review:"TCP/IP Detailed Volume 1: Agreement" 1th Chapter Overview-Reading Notes"TCP/IP Detailed Volume 1: Protocol" chapter 2nd link layer-Reading notes"TCP/IP Detailed Volume 1: Protocol" 3rd IP: Internet Protocol (1)-Reading notes"TCP/IP Detailed Volume 1: Protocol" 3rd IP: Internet

overturn. My ideal is to be a knowledgeable person with a wealth of professional knowledge, enough to deal with problems at work. In addition to work, you can read books to improve your temperament. 1. what is TCP/IP? If you want to know a person, you can chat from the group where he belongs. Our HTTP protocol is a member of the TCP/IP protocol family. we understand the status of HTTP in the entire netwo

Preface: Because OBJECT-C does not support multiple inheritance, it is often replaced with protocol (protocol). The Protocol (protocol) can only define a common set of interfaces, but cannot provide a specific implementation method. That is, it only tells you what to do, but specifically how to do it, it does not care.

First, protocol1. Basic use1> can be used to declare many methods, but cannot be used to declare member variables2> as long as a class complies with this protocol, it is equivalent to having all the method declarations in this agreement3> as long as the parent adheres to a protocol, the subclass also adheres to the2. FormatPreparation of the 1> protocol@

TelnetWhat is Telnet protocol?Telnet Server Software is our most commonly used Telnet Server software and is a typical client/server model service that uses the Telnet protocol to work. So, what is the Telnet protocol? What features does it have?Telnet is a protocol located at layer 7th of the OSI model---application l

I. Overview A protocol is a delegate (delegate)/proxy, which is an object that provides an opportunity to respond to changes in another object or to affect the behavior of another object. A protocol can only be used for one purpose, that is, to declare a heap of methods for an inherited class. The base class adheres to the Protocol, and its deriv

Put the three Protocols together for learning because these three protocols are on the same layer. ARP is used to find the MAC address of the Ethernet NIC of the target host, and the IP address carries the message to be sent. The data link layer can get the data transmission information from ARP, and get the data information to be transmitted from the IP address.1. IP protocol The IP protocol is the core of