实验需求1、R4为ISP其上只配置IP地址R4与其他所直连设备间均使用公有IP2、R3-R5、R6、R7为MGRE环境R3为中心站点3、整个OSPF环境IP基于172.16.0.0/16划分除了R12有两个环回其他路由器均有一个环回IP4、所有设备均可访问R4的环回5、减少LSA的更新量加快收敛保障更新安全6、全网可达先进行IP地址配置其余相同R1sys[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]stub no-summary[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123R2[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]stub no-summarysys[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123R3:[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0[Huawei-ospf-1-area-0.0.0.1]q[Huawei-ospf-1]qR4[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]stub no-summary[Huawei]interface Tunnel 0/0/0[Huawei-Tunnel0/0/0]ospf timer hello 5R5sys[Huawei]ospf 1 r 5.5.5.5[Huawei-ospf-1]area 0[Huawei-ospf-1-area-0.0.0.0]net 172.16.3.0 0.0.0.255[Huawei]ip route-static 0.0.0.0 0 45.0.0.1[Huawei]inter Tunnel 0/0/0[Huawei-Tunnel0/0/0]ip add 172.16.6.5 24[Huawei-Tunnel0/0/0]tunnel-protocol gre p2mp[Huawei-Tunnel0/0/0]source Serial 4/0/0[Huawei-Tunnel0/0/0]nhrp network-id 100[Huawei-Tunnel0/0/0]nhrp entry 172.16.6.3 34.0.0.2 register[Huawei-Tunnel0/0/0]q[Huawei]ospf 1[Huawei-ospf-1]area 0[Huawei-ospf-1-area-0.0.0.0]net 172.16.6.5 0.0.0.0[Huawei]inter Tunnel 0/0/0[Huawei-Tunnel0/0/0]ospf network-type p2mp[Huawei-Tunnel0/0/0]ospf dr-priority 0[Huawei]acl 2000[Huawei-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255[Huawei-acl-basic-2000]q[Huawei]interface Serial 4/0/0[Huawei-Serial4/0/0]nat outbound 2000[Huawei]interface Tunnel 0/0/0[Huawei-Tunnel0/0/0]ospf timer hello 5[Huawei-Tunnel0/0/0]qR6sys[Huawei]inter Tunnel 0/0/0[Huawei-Tunnel0/0/0]ip add 172.16.6.6 24[Huawei-Tunnel0/0/0]tunnel-protocol gre p2mp[Huawei-Tunnel0/0/0]source Serial 4/0/0[Huawei-Tunnel0/0/0]nhrp network-id 100[Huawei-Tunnel0/0/0]nhrp entry 172.16.6.3 34.0.0.2 register[Huawei-Tunnel0/0/0]q[Huawei]ospf 1[Huawei-ospf-1]are 0[Huawei-ospf-1-area-0.0.0.0]net 172.16.6.6 0.0.0.0[Huawei]inter Tunnel 0/0/0[Huawei-Tunnel0/0/0]ospf network-type p2mp[Huawei-Tunnel0/0/0]ospf dr-priority 0[Huawei]acl 2000[Huawei-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255[Huawei-acl-basic-2000]q[Huawei]interface Serial 4/0/0[Huawei-Serial4/0/0]nat outbound 2000[Huawei]ospf 1[Huawei-ospf-1]area 2[Huawei-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0[Huawei-ospf-1-area-0.0.0.2]q[Huawei]ip route-static 192.16.64.0 19 NULL 0[Huawei]q[Huawei]ospf 1[Huawei-ospf-1]a 2[Huawei-ospf-1-area-0.0.0.2]nss[Huawei-ospf-1-area-0.0.0.2]nssa no[Huawei-ospf-1-area-0.0.0.2]nssa no-import-route[Huawei-ospf-1-area-0.0.0.2]nssa no-summary[Huawei]inter Tunnel 0/0/0[Huawei-Tunnel0/0/0]ospf timer hello 5R7sys[Huawei]ip route-static 0.0.0.0 0 47.0.0.1[Huawei]inter Tunnel 0/0/0[Huawei-Tunnel0/0/0]ip add 172.16.6.7 24[Huawei-Tunnel0/0/0]tunnel-protocol gre p2mp[Huawei-Tunnel0/0/0]source GigabitEthernet 0/0/0[Huawei-Tunnel0/0/0]nhrp network-id 100[Huawei-Tunnel0/0/0]nhrp entry 172.16.6.3 34.0.0.2 register[Huawei-Tunnel0/0/0]q[Huawei]ospf 1[Huawei-ospf-1]a 0[Huawei-ospf-1-area-0.0.0.0]net 172.16.6.7 0.0.0.0[Huawei-ospf-1-area-0.0.0.0]q[Huawei-ospf-1]q[Huawei]inter Tunnel[Huawei-Tunnel0/0/0]ospf dr-priority 0[Huawei]acl 2000[Huawei-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255[Huawei-acl-basic-2000]q[Huawei]interface g0/0/0[Huawei-GigabitEthernet0/0/0]nat outbound 2000[Huawei]ospf 1[Huawei-ospf-1]a 3[Huawei-ospf-1-area-0.0.0.3]abr-summary 192.16.96.0 255.255.224.0[Huawei-ospf-1-area-0.0.0.3]q[Huawei]ip route-static 192.16.96.0 19 NULL 0[Huawei]ospf 1[Huawei-ospf-1]area 2[Huawei-ospf-1-area-0.0.0.2]q[Huawei-ospf-1]area 3[Huawei-ospf-1-area-0.0.0.3]nssa no-summary[Huawei]interface Tunnel 0/0/0[Huawei-Tunnel0/0/0]ospf timer hello 5R8[Huawei]ospf 1 r 8.8.8.8[Huawei-ospf-1]area 3[Huawei-ospf-1-area-0.0.0.3]net 172.16.97.2 0.0.0.0[Huawei-ospf-1-area-0.0.0.3]net 172.16.97.5 0.0.0.0[Huawei-ospf-1-area-0.0.0.3]net 172.16.98.0 0.0.0.255R9[Huawei]ospf 1 r 9.9.9.9[Huawei-ospf-1]area 3[Huawei-ospf-1-area-0.0.0.3]net 172.16.97.6 0.0.0.0[Huawei-ospf-1-area-0.0.0.3]q[Huawei-ospf-1]q[Huawei]ospf 2 r 9.9.9.9[Huawei-ospf-2]area 4[Huawei-ospf-2-area-0.0.0.4]network 172.16.129.1 0.0.0.0[Huawei-ospf-2-area-0.0.0.4]network 172.16.130.0 0.0.0.255[Huawei-ospf-2-area-0.0.0.4]q[Huawei]ospf 1[Huawei-ospf-1]import-route ospf 2[Huawei-ospf-1]q[Huawei]ospf 2[Huawei-ospf-2]import-route ospf 1[Huawei-ospf-2]q[Huawei]ospf 1[Huawei-ospf-1]asbr-summary 172.16.128.0 255.255.224.0[Huawei-ospf-1]q[Huawei]ip route-static 172.16.128.0 19 NULL 0[Huawei]\n[Huawei]ospf 1[Huawei-ospf-1]a 3[Huawei-ospf-1-area-0.0.0.3]nssa[Huawei-ospf-1-area-0.0.0.3]q[Huawei-ospf-1]q[Huawei]ospf 2[Huawei-ospf-2]default-route-advertise alwaysR10[Huawei]ospf 1 r 10.10.10.10[Huawei-ospf-1]area 4[Huawei-ospf-1-area-0.0.0.4]net 172.16.129.2 0.0.0.0[Huawei-ospf-1-area-0.0.0.4]net 172.16.131.0 0.0.0.255R11[Huawei]ospf 1 r 11.11.11.11[Huawei-ospf-1]area 2[Huawei-ospf-1-area-0.0.0.2]net 172.16.65.2 0.0.0.0[Huawei-ospf-1-area-0.0.0.2]net 172.16.65.5 0.0.0.0[Huawei-ospf-1-area-0.0.0.2]net 172.16.66.0 0.0.0.255[Huawei-ospf-1-area-0.0.0.2]q[Huawei-ospf-1]q[Huawei]ospf 1[Huawei-ospf-1]a 2[Huawei-ospf-1-area-0.0.0.2]nssaR12[Huawei-ospf-1-area-0.0.0.1]net 172.16.35.0 0.0.0.255[Huawei-ospf-1-area-0.0.0.1]q[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]stub no-summary[Huawei]ospf 1[Huawei-ospf-1]a 1[Huawei-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123验证全网通————————————————