OSPF多区域配置1.规划网络拓扑图如下：文字说明：a.R1 与R2 作为末梢区域area 1b.R2 与R3 作为主区域area 0c.R3 与R4 作为末梢区域area 2d.R1 上连接交换机LSW3，LSW3上拥有vlan 8，g0/0/1与g/0/2属于vlan 8e.R1还直连一个主机，网段为192.168.7.0 网段。

2.配置：R1:<Huawei>sysEnter system view, return user view with Ctrl+Z.[Huawei]un in enInfo: Information center is disabled.[Huawei]sysname R1[R1]int e0/0/0[R1-Ethernet0/0/0]ip add 12.1.1.1 30[R1-Ethernet0/0/0]q[R1]int e0/0/1[R1-Ethernet0/0/1]ip add 192.168.8.1 24[R1-Ethernet0/0/1]q[R1]int g0/0/0[R1-GigabitEthernet0/0/0]ip add 192.168.7.1 24[R1-GigabitEthernet0/0/0]q[R1]int loop[R1]int LoopBack 0[R1-LoopBack0]ip add 1.1.1.1 24[R1-LoopBack0]q[R1]int loopback 1[R1-LoopBack1]ip add 192.168.1.1 24[R1-LoopBack1]q[R1]ospf 10[R1-ospf-10]area 1[R1-ospf-10-area-0.0.0.1]network 12.1.1.0 0.0.0.3[R1-ospf-10-area-0.0.0.1]network 1.1.1.0 0.0.0.255[R1-ospf-10-area-0.0.0.1]network 192.168.1.0 0.0.0.255[R1-ospf-10-area-0.0.0.1]network 192.168.8.0 0.0.0.255 //为了能让192.168.8.0网段能够到达2.2.2.2[R1-ospf-10-area-0.0.0.1]network 192.168.7.0 0.0.0.255 //为了能让192.168.7.0网段能够到达2.2.2.2[R1-ospf-10-area-0.0.0.1]q[R1-ospf-10]q[R1]ip route-static 192.168.0.0 255.255.255.0 12.1.1.2[R1]ip route-static 192.168.0.0 255.255.255.0 192.168.8.254[R1]R2:[R2]int e0/0/0[R2-Ethernet0/0/0]ip add 12.1.1.2 30[R2-Ethernet0/0/0]int e0/0/1[R2-Ethernet0/0/1]ip add 23.1.1.1 30[R2-Ethernet0/0/1]q[R2]int loopback 0[R2-LoopBack0]ip add 2.2.2.2 24[R2-LoopBack0]q[R2]int loopback 1[R2-LoopBack1]ip add 192.168.2.1 24[R2-LoopBack1]q[R2]ospf 10[R2-ospf-10]area 1[R2-ospf-10-area-0.0.0.1]network 12.1.1.0 0.0.0.3[R2-ospf-10-area-0.0.0.1]q[R2-ospf-10]area 0[R2-ospf-10-area-0.0.0.0]network 23.1.1.0 0.0.0.3[R2-ospf-10-area-0.0.0.0]network 2.2.2.0 0.0.0.255[R2-ospf-10-area-0.0.0.0]network 192.168.2.0 0.0.0.255[R2-ospf-10-area-0.0.0.0]q[R2-ospf-10]q[R2]R3:[Huawei]sysname R3[R3]int e0/0/0[R3-Ethernet0/0/0]ip add 34.1.1.1 30[R3-Ethernet0/0/0]int e0/0/1[R3-Ethernet0/0/1]ip add 23.1.1.2 30[R3-Ethernet0/0/1]q[R3]int loopback 0[R3-LoopBack0]ip add 3.3.3.3 24[R3-LoopBack0]q[R3]int loopback 1[R3-LoopBack1]ip add 192.168.3.1 24[R3-LoopBack1]q[R3]ospf 10[R3-ospf-10]area 2[R3-ospf-10-area-0.0.0.2]network 34.1.1.0 0.0.0.3[R3-ospf-10-area-0.0.0.2]q[R3-ospf-10]area 0[R3-ospf-10-area-0.0.0.0]network 3.3.3.0 0.0.0.255[R3-ospf-10-area-0.0.0.0]network 23.1.1.0 0.0.0.3[R3-ospf-10-area-0.0.0.0]network 192.168.3.0 0.0.0.255 [R3-ospf-10-area-0.0.0.0]q[R3-ospf-10]q[R3]R4：[Huawei]sysname R4[R4]int e0/0/0[R4-Ethernet0/0/0]ip add 34.1.1.2 30[R4-Ethernet0/0/0]q[R4]int loopback 0[R4-LoopBack0]ip add 4.4.4.4 24[R4-LoopBack0]q[R4]int loopback 1[R4-LoopBack1]ip add 192.168.4.1 24[R4-LoopBack1]q[R4]ospf 10[R4-ospf-10]area 2[R4-ospf-10-area-0.0.0.2]network 4.4.4.0 0.0.0.255[R4-ospf-10-area-0.0.0.2]network 34.1.1.0 0.0.0.3[R4-ospf-10-area-0.0.0.2]network 192.168.4.0 0.0.0.255 [R4-ospf-10-area-0.0.0.2]q[R4-ospf-10]q[R4]从PC端ping各个路由器的route idPC>ping 1.1.1.1Ping 1.1.1.1: 32 data bytes, Press Ctrl_C to breakFrom 1.1.1.1: bytes=32 seq=1 ttl=255 time=31 ms From 1.1.1.1: bytes=32 seq=2 ttl=255 time=15 ms From 1.1.1.1: bytes=32 seq=3 ttl=255 time=16 ms From 1.1.1.1: bytes=32 seq=4 ttl=255 time=31 ms From 1.1.1.1: bytes=32 seq=5 ttl=255 time=16 ms--- 1.1.1.1 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 15/21/31 msPC>ping 3.3.3.3Ping 3.3.3.3: 32 data bytes, Press Ctrl_C to breakFrom 3.3.3.3: bytes=32 seq=1 ttl=253 time=94 ms From 3.3.3.3: bytes=32 seq=2 ttl=253 time=109 ms From 3.3.3.3: bytes=32 seq=3 ttl=253 time=94 ms From 3.3.3.3: bytes=32 seq=4 ttl=253 time=94 ms From 3.3.3.3: bytes=32 seq=5 ttl=253 time=94 ms--- 3.3.3.3 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 94/97/109 msPC>ping 4.4.4.4Ping 4.4.4.4: 32 data bytes, Press Ctrl_C to breakFrom 4.4.4.4: bytes=32 seq=1 ttl=252 time=156 ms From 4.4.4.4: bytes=32 seq=2 ttl=252 time=125 msFrom 4.4.4.4: bytes=32 seq=3 ttl=252 time=109 msFrom 4.4.4.4: bytes=32 seq=4 ttl=252 time=110 msFrom 4.4.4.4: bytes=32 seq=5 ttl=252 time=141 ms--- 4.4.4.4 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 109/128/156 msPC>查看R2的路由表：3.配置R1与R2 链路认证，使用明文认证R1：[R1]int e0/0/0[R1-Ethernet0/0/0]ospf aut[R1-Ethernet0/0/0]ospf authentication-mode sim[R1-Ethernet0/0/0]ospf authentication-mode simple plain YP[R1-Ethernet0/0/0]q查看邻居路由：两个路由器链路密码不同断开认证邻居关系[R1]dis ospf peer briefOSPF Process 10 with Router ID 12.1.1.1Peer Statistic Information----------------------------------------------------------------------------Area Id Interface Neighbor id State0.0.0.1 Ethernet0/0/0 12.1.1.2 Full----------------------------------------------------------------------------R2：[R2]int e0/0/0[R2-Ethernet0/0/0]ospf au[R2-Ethernet0/0/0]ospf authentication-mode simple plain YP[R2-Ethernet0/0/0]q查看邻居路由：两个路由器链路密码相同重新连接认证邻居关系[R2]dis ospf peer briefOSPF Process 10 with Router ID 12.1.1.2Peer Statistic Information----------------------------------------------------------------------------Area Id Interface Neighbor id State0.0.0.0 Ethernet0/0/1 34.1.1.1 Full0.0.0.1 Ethernet0/0/0 12.1.1.1 Full----------------------------------------------------------------------------4.配置R3与R4的区域认证，使用密文认证。