CCNA中文ppt - 單區(qū)域的OSPF配置

1、 單區(qū)域的單區(qū)域的OSPFOSPF配置配置2Cisxo Education SolutionOSPFOSPF協(xié)議概述協(xié)議概述1 1 OSPFOSPF是一種鏈路狀態(tài)路由選擇協(xié)議。是一種鏈路狀態(tài)路由選擇協(xié)議。 所謂鏈路狀態(tài)是指路由器接口的狀態(tài)，如所謂鏈路狀態(tài)是指路由器接口的狀態(tài)，如UPUP，DOWNDOWN，IPIP及網(wǎng)絡(luò)類型等。及網(wǎng)絡(luò)類型等。 鏈路狀態(tài)信息通過鏈路狀態(tài)公告鏈路狀態(tài)信息通過鏈路狀態(tài)公告(LSA)(LSA)發(fā)布到網(wǎng)上發(fā)布到網(wǎng)上的每臺(tái)路由器。的每臺(tái)路由器。 每臺(tái)路由器通過每臺(tái)路由器通過LSALSA信息建立一個(gè)關(guān)于網(wǎng)絡(luò)的拓?fù)湫畔⒔⒁粋€(gè)關(guān)于網(wǎng)絡(luò)的拓?fù)鋽?shù)據(jù)庫。數(shù)據(jù)庫。3Cisxo Educ

2、ation SolutionOSPFOSPF協(xié)議概述協(xié)議概述2 2 區(qū)域區(qū)域(Area)(Area) 在在OSPFOSPF中使用區(qū)域來為自治系統(tǒng)分段，中使用區(qū)域來為自治系統(tǒng)分段，OSPFOSPF是是一種層次化的路由選擇協(xié)議，區(qū)域一種層次化的路由選擇協(xié)議，區(qū)域0 0是一個(gè)是一個(gè)OSPFOSPF網(wǎng)絡(luò)中必須具有的區(qū)域，也稱為主干區(qū)域，其他網(wǎng)絡(luò)中必須具有的區(qū)域，也稱為主干區(qū)域，其他所有區(qū)域要求通過區(qū)域所有區(qū)域要求通過區(qū)域0 0互連到一起?；ミB到一起。4Cisxo Education SolutionOSPFOSPF協(xié)議的優(yōu)點(diǎn)協(xié)議的優(yōu)點(diǎn) OSPFOSPF是基于國(guó)際標(biāo)準(zhǔn)的協(xié)議，具有開放性強(qiáng)的特點(diǎn)，被眾是基

3、于國(guó)際標(biāo)準(zhǔn)的協(xié)議，具有開放性強(qiáng)的特點(diǎn)，被眾多網(wǎng)絡(luò)設(shè)備廠商所支持。多網(wǎng)絡(luò)設(shè)備廠商所支持。 支持支持VLSMVLSM； 使用觸發(fā)的路由更新，快速反應(yīng)網(wǎng)絡(luò)變化，減小協(xié)議本身使用觸發(fā)的路由更新，快速反應(yīng)網(wǎng)絡(luò)變化，減小協(xié)議本身對(duì)網(wǎng)絡(luò)流量的占用。對(duì)網(wǎng)絡(luò)流量的占用。 支持大型網(wǎng)絡(luò)，并能進(jìn)行優(yōu)化路由更新。支持大型網(wǎng)絡(luò)，并能進(jìn)行優(yōu)化路由更新。5Cisxo Education Solution6Cisxo Education Solution 2000, Cisco Systems, Inc. 4-7Configuring OSPF in a Single Area8Cisxo Education Solutio

4、nConfiguring OSPF on Internal Configuring OSPF on Internal RoutersRoutersCan Assign Network or Interface Address.Broadcast NetworkPoint-to-Point Network E010.64.0.110.64.0.2E0 S010.2.1.210. 2.1.1S1ABCinterface Ethernet0 ip address 10.64.0.1 255.255.255.0!router ospf 1 network 10.0.0.0 0.255.255.255

5、area 0interface Ethernet0 ip address 10.64.0.2 255.255.255.0!interface Serial0 ip address 10.2.1.2 255.255.255.0router ospf 50 network 10.2.1.2 0.0.0.0 area 0 network 10.64.0.2 0.0.0.0 area 0 2000, Cisco Systems, Inc. 4-9Verifying OSPF Operation10Cisxo Education SolutionRouter#show ip ospf interface

6、Verifying OSPF OperationVerifying OSPF Operation Displays area ID and adjacency informationRouter#show ip protocols Verifies that OSPF is configuredRouter#show ip route Displays all the routes learned by the router11Cisxo Education Solutionshow ip ospf interfaceshow ip ospf interfaceR2#sh ip ospf in

7、t e0Ethernet0 is up, line protocol is up Internet Address 192.168.0.12/24, Area 0 Process ID 1, Router ID 192.168.0.12, Network Type BROADCAST, Cost: 10 Transmit Delay is 1 sec, State DROTHER, Priority 1 Designated Router (ID) 192.168.0.11, Interface address 192.168.0.11 Backup Designated router (ID

8、) 192.168.0.13, Interface address 192.168.0.13 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:04 Neighbor Count is 3, Adjacent neighbor count is 2 Adjacent with neighbor 192.168.0.13 (Backup Designated Router) Adjacent with neighbor 192.168.0.11 (Designated Router) Suppress hello for 0 neighbor(s) 2000, Cisco Systems, Inc. 4-12Lab Exercises13Cisxo Education SolutionLab ExercisesLab Exercises 在路由器上啟動(dòng)在路由器上啟動(dòng)OSPFOSPF協(xié)議協(xié)議 聲明相應(yīng)網(wǎng)絡(luò)進(jìn)入聲明相應(yīng)網(wǎng)絡(luò)進(jìn)入OSPFOSPF路由進(jìn)程路由進(jìn)程 查看查看OSPFOSPF路由信息路由信息 Show Show ip ip ro