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1、利用DHCP自動分配IP地址第三章概述DHCP概述安裝DHCP服務(wù)為DHCP服務(wù)授權(quán)創(chuàng)建和配置作用域自定義DHCP功能在路由式網(wǎng)絡(luò)中配置DHCP支持DHCPDHCP概述用人工方式和自動方式配置TCP/IPDHCP的運作方式DHCP租約的生成過程DHCP租約的更新過程DHCP服務(wù)器和客戶端的需求條件用人工方式和自動方式配置TCP/IP缺點手工配置IP地址自動分配IP地址優(yōu)點每臺客戶機的IP地址需手工輸入IP地址可能錯誤或非法難以追蹤的網(wǎng)絡(luò)問題不便于移網(wǎng)IP地址由DHCPSERVER自動分配保證客戶機使用正確的IP地址配置信息消除一般的網(wǎng)絡(luò)問題減少管理開銷，自
2、動更新客戶機配置信息，克服IP不足問題DHCP的運作方式IPAddress1IPAddress2IPAddress3DHCP DatabaseIPAddress2IPAddress1DHCP客戶機:從DHCP服務(wù)器處獲取IP配置DHCP Server非DHCP客戶機:從TCP/IP配置中獲取IP配置DHCP客戶機:從DHCP服務(wù)器處獲取IP配置DHCP租約的生成過程DHCPServersDHCPClient1IPLeaseRequest3IPLeaseSelection2IPLeaseOffer4IPLease AcknowledgementDHCP租約的
3、更新過程DHCPREQUESTSourceIPAddress=192.168.0.77Dest.IPAddress=192.168.0.108RequestedIPAddress=192.168.0.77HardwareAddress=08004....DHCPACKSourceIPAddress=192.168.0.108Dest.IPAddress=192.168.0.77OfferedIPAddress=192.168.0.77ClientHardwareAddress=08004...SubnetMask=255.255.255.0Lengthof
4、Lease=8daysServerIdentifier=192.168.0.108DHCPOption:Router=192.168.0.1DHCPClientDHCPServerDHCP服務(wù)器和客戶端的需求條件DHCP服務(wù)器需求條件(Windows2000Server)DHCP服務(wù)靜態(tài)IP地址,子網(wǎng)掩碼,默認網(wǎng)關(guān)合法的IP范圍DHCP客戶端Windows2000Professional或Windows2000ServerWindowsNTServer或Workstation3.51或更高Windows95或Windows98WindowsforWorkg
5、roups3.11,運行TCP/IP-32MicrosoftNetworkClient3.0forMS-DOSLANManager2.2c非Microsoft操作系統(tǒng)安裝DHCP服務(wù)NetworkingServicesToaddorremoveacomponent,clickthecheckbox.Ashadedboxmeansthatonlypart ofthecomponentwillbeinstalled.Toseewhat’sincludedinacomponent,clickDetails.SubcomponentsofNetworkingSer
6、vices:0.8MBDescription:Totaldiskspacerequired:Spaceavailableondisk:0.9MB912.4MBDetails...OKCancelEnablesanetworkconnectedtotheInternettoautomaticallyassignatemporaryIPaddresstoahostwhenthehostconnectstothenetwork.COMInternetServicesProxy0.0MBDomainNameSystem(DNS)0.0MBDynamicHostCo
7、nfigurationProtocol(DHCP)0.0MBInternetAuthenticationService0.0MBQoSAdmissionControlService0.0MBSimpleTCP/IPServices0.0MBSiteServerLDAPServices1.8MB為DHCP服務(wù)授權(quán)如果未被授權(quán)，服務(wù)在系統(tǒng)日志中產(chǎn)生一個錯誤，并忽略所有客戶機的請求如果被授權(quán)，服務(wù)正確啟動DHCP服務(wù)檢查授權(quán)情況ClientsDHCPServerDomainController/ DHCPserverDHCPServerLabA:創(chuàng)建DHCP服務(wù)
8、器并為其授權(quán)創(chuàng)建和配置作用域作用域概述利用“新作用域”向?qū)Ю眠x項
