国家重点实验室 Chapter One Networking basics and trend ● 1.1 Networking basics O1.2 Network trend 2020/4/23 Dr.Zhangi xu,National Key Lab on ISN,Xidian University 1
2020/4/23 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University 1 Chapter One Networking basics and trend 1.1 Networking basics 1.2 Network trend
国家重点实验室 1.The main components/elements of an information network The network in this course denotes the information network,since there are a lot of networks that are different from this one,such as the network of an organization,postal network railway network,the relation network of a family,etc. Mathematically,a network can be represented as a graph G=(n,v),where n is the set of nodes and y denotes a set of links to which nodes are connected. For an information network,a node can be the device or equipment that belongs to either users or network operators
2020/4/23 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University 2 The network in this course denotes the information network, since there are a lot of networks that are different from this one, such as the network of an organization, postal network , railway network, the relation network of a family, etc. Mathematically, a network can be represented as a graph G=(n , v), where n is the set of nodes and v denotes a set of links to which nodes are connected. For an information network, a node can be the device or equipment that belongs to either users or network operators. 1. The main components/elements of an information network
国家重点实验室 1)Terminal Terminal could be divided to two types:user terminal and network terminal (also known as Server) a)User terminal:It performs the capturing,processing and transmission of user information,and has the functions of control and management. Examples of user terminal >a telephone a notebook a mobile phone a computer
1) Terminal Terminal could be divided to two types: user terminal and network terminal (also known as Server) a) User terminal: It performs the capturing, processing and transmission of user information, and has the functions of control and management. Examples of user terminal a telephone a notebook a mobile phone a computer
b)Network terminal (aka Server):It implements the 国家重片 following functions: information capturing and/or storage voice recorder,video camera,data store server (mixed)processing and transmission of users'information video conferencing server control and management for itself and users corresponding example are Web server and Session Initiation Protocol(SP#,会话(W会晤)发起/启动协议)call processing server. Cisco IP/VC 3510 SIP Videoconferencing Web Server Multipoint Control Unit SIP Server (MPCU#)
b) Network terminal (aka Server): It implements the following functions: information capturing and/or storage voice recorder, video camera, data store server (mixed) processing and transmission of users’ information video conferencing server Web Server Cisco IP/VC 3510 Videoconferencing Multipoint Control Unit (MPCU#) SIP Server control and management for itself and users corresponding example are Web server and Session Initiation Protocol (SIP#, 会话(/会晤)发起/启动协议) call processing server
国家重点实验室 ■2)network node Traditionally,it mainly performs the switching,exchange, transfer and multiplexing of user information,and has the functions of both control and management itself. Examples of network node: a router TPLINK for home and office Huawei enterprise router
2) network node Traditionally, it mainly performs the switching, exchange, transfer and multiplexing of user information, and has the functions of both control and management itself. Examples of network node: a router TPLINK for home and office Huawei enterprise router