畢業(yè)設(shè)計(jì)初稿(同名5796)-閱讀頁
2025-07-15 12:07本頁面
【正文】 分配的IP地址是否能夠使用。6. DHCP Client在成功獲取IP地址后，隨時(shí)可以通過發(fā)送DHCP Release報(bào)文釋放自己的IP地址，DHCP Server收到DHCP Release報(bào)文后，會(huì)回收相應(yīng)的IP地址并重新分配。如果DHCP Client成功收到DHCP Server發(fā)送的DHCP ACK報(bào)文，則按相應(yīng)時(shí)間延長(zhǎng)IP地址租期；如果沒有收到DHCP Server發(fā)送的DHCP ACK報(bào)文，則DHCP Client繼續(xù)使用這個(gè)IP地址。如果DHCP Client成功收到DHCP Server發(fā)送的DHCP ACK報(bào)文，則按相應(yīng)時(shí)間延長(zhǎng)IP地址租期；如果沒有收到DHCP Server發(fā)送的DHCP ACK報(bào)文，則DHCP Client繼續(xù)使用這個(gè)IP地址，直到IP地址使用租期到期時(shí)，DHCP Client才會(huì)向DHCP Server發(fā)送DHCP Release報(bào)文來釋放這個(gè)IP地址，并開始新的IP地址申請(qǐng)過程。另外，DHCP服務(wù)器DHCPOFFER中指定[1]的地址不一定為最終分配的地址，通常情況下，DHCP服務(wù)器會(huì)保留該地址直到客戶端發(fā)出正式請(qǐng)求。如果發(fā)送給DHCP客戶端的地址已經(jīng)被其他DHCP客戶端使用，客戶端會(huì)向服務(wù)器發(fā)送DHCPDECLINE信息包拒絕接受已經(jīng)分配的地址信息。四、項(xiàng)目實(shí)現(xiàn) [R1]ip pool vlan10[R1ippoolvlan10] gatewaylist [R1ippoolvlan10] network mask [R1ippoolvlan10] lease day 10 hour 0 minute 0 [R1ippoolvlan10] dnslist [R1ippoolvlan10]ip pool vlan20[R1ippoolvlan20] gatewaylist [R1ippoolvlan20] network mask [R1ippoolvlan20] lease day 10 hour 0 minute 0 [R1ippoolvlan20] dnslist 查看主機(jī)分配情況[SW2]int Ethernet 0/0/2[SW2Ethernet0/0/2]port linktype access[SW2Ethernet0/0/2] port default vlan 10[SW2Ethernet0/0/2] portsecurity enable[SW2Ethernet0/0/2] portsecurity protectaction shutdown[SW2Ethernet0/0/2] portsecurity macaddress sticky[SW2Ethernet0/0/2]quit[SW2]int Ethernet 0/0/3[SW2Ethernet0/0/3]port linktype access[SW2Ethernet0/0/3] port default vlan 10[SW2Ethernet0/0/3] portsecurity enable[SW2Ethernet0/0/3] portsecurity protectaction shutdown[SW2Ethernet0/0/3] portsecurity macaddress sticky查看地址stikey情況[R1] ospf 1 routerid [R1ospf1] area [] network [] network [] network [Eudemon]ospf 1 routerid [Eudemonospf1] area [] network [Eudemon]firewall zone trust [Eudemonzonetrust]set priority 85[Eudemonzonetrust] add interface GigabitEthernet0/0/0[Eudemonzonetrust]q[Eudemon]firewall zone untrust [Eudemonzoneuntrust]set priority 5[Eudemonzoneuntrust] add interface GigabitEthernet0/0/1[Eudemon] firewall packetfilter default permit interzone trust untrust direction outbound /當(dāng)數(shù)據(jù)流無法匹配域間包過濾中的ACL規(guī)則時(shí)，會(huì)按照域間缺省包過濾規(guī)則轉(zhuǎn)發(fā)或丟棄該數(shù)據(jù)流的報(bào)文[Eudemon] interface GigabitEthernet 1/0/2[EudemonGigabitEthernet1/0/2] ip address 24[EudemonGigabitEthernet1/0/2] quit[Eudemon] acl 2000[Eudemonaclbasic2000] rule permit source [Eudemonaclbasic2000] rule permit source [Eudemonaclbasic2000] quit /創(chuàng)建基本ACL 2000，[Eudemon] nat addressgroup 1 /配置NAT地址池。這次畢業(yè)設(shè)計(jì)給了我很大的感想！通過這次的畢業(yè)設(shè)計(jì)真的讓我學(xué)到了很多東西。設(shè)計(jì)過程中也會(huì)遇到麻煩，比如怎樣最清晰的表達(dá)自己的設(shè)計(jì)思路，如何去解決面臨的以前自己沒有涉及的領(lǐng)域！六、致謝 大學(xué)生活一晃而過，回首走過的歲月，心中倍感充實(shí)，當(dāng)我寫完這篇畢業(yè)論文的時(shí)候，有一種如釋重負(fù)的感覺，感慨良多。他在忙碌的教學(xué)工作中擠出時(shí)間來審查、修改我的論文。他們循循循善誘的教導(dǎo)和不拘一格的思路給予我無盡的啟迪。最后祝各位老師，同學(xué)身體健康，萬
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