CCNA思科网络技术学院教程-第7章_TCP-IP协议集和IP寻址.ppt

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1、第七章TCP/IP协议集和IP寻址主要内容概述TCP/IP协议集，将TCP/IP协议模型与OSI模型比较，并描述TCP/IP协议集中每一层。7.1介绍TCP/IPHostInternetTCP/IPHost1、TCP/IP协议栈7654325432ApplicationPresentationSessionTransportNetworkDataLinkPhysical1ApplicationTransportInternetNetworkInterfaceOSITCP/IP2、应用层协议*UsedbytherouterApplicationTransportInternetN

2、etworkInterfaceFileTransfer-TFTP*-FTP*E-Mail-SMTPRemoteLogin-Telnet*-rlogin*NetworkManagement-SNMP*NameManagement-DNS*3、传输层协议TransmissionControlProtocol(TCP)UserDatagramProtocol(UDP)ApplicationTransportInternetConnection-OrientedConnectionlessNetworkInterface4、InternetLayerOverviewOSInetwo

3、rklayercorrespondstotheTCP/IPinternetlayerInternetProtocol(IP)InternetControlMessageProtocol(ICMP)AddressResolutionProtocol(ARP)ReverseAddressResolutionProtocol(RARP)ApplicationTransportInternetNetworkInterface5、IPDatagramVersion(4)DestinationIPAddress(32)Options(0or32ifany)Data(variesifan

4、y)1Bit0Bit15Bit16Bit31HeaderLength(4)Priority&TypeofService(8)TotalLength(16)Identification(16)Flags(3)Fragmentoffset(13)Timetolive(8)Protocol(8)Headerchecksum(16)SourceIPAddress(32)20Bytes6、InternetControlMessageProtocolApplicationTransportInternetDataLinkPhysicalDestinationUnreachabl

5、eEcho(Ping)OtherICMP17、AddressResolutionProtocol172.16.3.1172.16.3.2IP:172.16.3.2=???IneedtheEthernetaddressof176.16.3.2.AddressResolutionProtocol172.16.3.1172.16.3.2IP:172.16.3.2=???Iheardthatbroadcast.Themessageisforme.HereismyEthernetaddress.IneedtheEthernetaddressof176.16.3.2.AddressReso

6、lutionProtocol172.16.3.1IP:172.16.3.2Ethernet:0800.0020.1111172.16.3.2IP:172.16.3.2=???Iheardthatbroadcast.Themessageisforme.HereismyEthernetaddress.IneedtheEthernetaddressof176.16.3.2.AddressResolutionProtocolMapIPEthernetLocalARP172.16.3.1IP:172.16.3.2Ethernet:0800.0020.1111172.16.3.2IP:17

7、2.16.3.2=???Iheardthatbroadcast.Themessageisforme.HereismyEthernetaddress.IneedtheEthernetaddressof176.16.3.2.8、ReverseARPEthernet:0800.0020.1111IP=???WhatismyIPaddress?ReverseARPEthernet:0800.0020.1111IP=???WhatismyIPaddress?Iheardthatbroadcast.Yo