hcna教學(xué)乾頤堂課堂1-3arp協(xié)議

1、流TECHNOLOGIES.流TECHNOLOGIES.前乾網(wǎng)絡(luò)設(shè)備有數(shù)據(jù)要發(fā)送給另一臺網(wǎng)絡(luò)設(shè)備時，必須要知道對方的網(wǎng)絡(luò)層地址（即IP地址）。IP地址由前乾網(wǎng)絡(luò)設(shè)備有數(shù)據(jù)要發(fā)送給另一臺網(wǎng)絡(luò)設(shè)備時，必須要知道對方的網(wǎng)絡(luò)層地址（即IP地址）。IP地址由的MAC地址的過程是由ARP（AddressResolutionProtocol）Copyrights.Page學(xué)習(xí)目乾掌握ARP的工作原學(xué)習(xí)目乾掌握ARP的工作原理解ARP緩存表的作Copyrights.Page乾IP: MAC: 00-01-02-03-04-主機主機 乾IP: MAC: 00-01-02-03-04-主機主機 目的IPIP: 目

2、的MAC未00-01-02-03-04-數(shù)據(jù)鏈路層在進行數(shù)據(jù)封裝時，需要目的MAC地址Copyrights.PageARP數(shù)據(jù)包格乾0SourceHardware SourceProtocolCopyrightARP數(shù)據(jù)包格乾0SourceHardware SourceProtocolCopyrights.PageHardware ProtocolProtocolOperationARP工作過乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-ARP工作過乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-

3、01-02-03-04-主機A發(fā)送一個數(shù)據(jù)包給主機C之前，首先要獲取主機C的MAC地址Copyrights.PageARP緩乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-Host-ARP緩乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-Host-ernetPhysicalCopyrights.PageARP請乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-目的 IP: ARP請乾主機 00-01-02-03-04-

4、主機主機 00-01-02-03-04-00-01-02-03-04-目的 IP: IP:目的 操作類型: 目的MAC-源00-01-02-03-04-Copyrights.PageARP響乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-Host Carp -a ernetaddressARP響乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-Host Carp -a ernetaddressPhysicaladdress Copyrights.PageARP響乾主機 00-0

5、1-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-目的IPARP響乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-目的IPIP: MAC00-01-02-03-04- 操作類型目的00-01-02-03-04-源00-01-02-03-04-Copyrights.PageARP緩乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-Host-ARP緩乾主機 00-01-02-03-04-主機主機 00-01-02-03-04-00-01-02-03-04-Host-ernetaddress Physicaladdress Copyrights.Page乾主機主機 發(fā)送ARP Request 20.2.0.1的MAC路由器乾主機主機 發(fā)送ARP Request 20.2.0.1的MAC路由器發(fā)送ARP 實Copyrights.Page免費乾主機目的IPIP: 免費乾主機目的IPIP: 目的MAC : 00-00-00-00-00-MAC : 00-01-02-03-04-源00-01-02-03-04-目的-免費ARP可以用來探測IP。Copyright