要求
1,R4为ISP,其上只能配置IP地址;
R4与其他所有直连设备间均使用公有IP
2,R3-R5/6/7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;
4,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

IP配置








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OSPF,RIP,缺省
[r2]ip route-static 0.0.0.0 0 172.16.1.3
[r3]ip route-static 0.0.0.0 0 34.0.0.2
[r5]ip route-static 0.0.0.0 0 45.0.0.1
[r6]ip route-static 0.0.0.0 0 46.0.0.1
[r7]ip route-static 0.0.0.0 0 47.0.0.1
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]network 172.16.1.0 0.0.0.7
[r1-ospf-1-area-0.0.0.1]network 172.16.10.1 0.0.0.0
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]network 172.16.1.0 0.0.0.7
[r2-ospf-1-area-0.0.0.1]network 172.16.20.2 0.0.0.0
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 172.16.30.3 0.0.0.0
[r3-ospf-1-area-0.0.0.0]network 172.16.100.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]quit
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 172.16.1.0 0.0.0.7
[r3-ospf-1-area-0.0.0.1]default-route-advertise always
[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]area 0
[r5-ospf-1-area-0.0.0.0]network 172.16.50.5 0.0.0.0
[r5-ospf-1-area-0.0.0.0]network 172.16.100.0 0.0.0.255
[r5-ospf-1-area-0.0.0.0]quit
[r5-ospf-1]area 3
[r5-ospf-1-area-0.0.0.3]network 172.16.3.0 0.0.0.3
[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]area 0
[r6-ospf-1-area-0.0.0.0]network 172.16.60.6 0.0.0.0
[r6-ospf-1-area-0.0.0.0]network 172.16.100.0 0.0.0.255
[r6-ospf-1-area-0.0.0.0]quit
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]network 172.16.2.0 0.0.0.3
[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]network 172.16.70.7 0.0.0.0
[r7-ospf-1-area-0.0.0.0]network 172.16.100.0 0.0.0.255
[r7-ospf-1-area-0.0.0.0]quit
[r7-ospf-1]area 4
[r7-ospf-1-area-0.0.0.4]network 172.16.3.4 0.0.0.3
[r8]ospf 1 router-id 8.8.8.8
[r8-ospf-1]area 3
[r8-ospf-1-area-0.0.0.3]network 172.16.3.0 0.0.0.3
[r8-ospf-1-area-0.0.0.3]network 172.16.80.8 0.0.0.0
[r9]ospf 1 router-id 9.9.9.9
[r9-ospf-1]area 3
[r9-ospf-1-area-0.0.0.3]network 172.16.3.8 0.0.0.3
[r9-ospf-1-area-0.0.0.3]network 172.16.90.9 0.0.0.0
[r9-ospf-1-area-0.0.0.3]quit
[r9-ospf-1]area 4
[r9-ospf-1-area-0.0.0.4]network 172.16.4.0 0.0.0.3
[r9-ospf-1-area-0.0.0.4]quit
[r9-ospf-1]import-route ospf 2
[r10]ospf 2 router-id 10.10.10.10
[r10-ospf-2]area 4
[r10-ospf-2-area-0.0.0.4]network 172.16.4.0 0.0.0.3
[r10-ospf-2-area-0.0.0.4]network 172.16.10.10 0.0.0.0
[r11]ospf 1 router-id 11.11.11.11
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.2]network 172.16.2.0 0.0.0.3
[r11-ospf-1-area-0.0.0.2]network 172.16.11.11 0.0.0.0
[r12]ospf 1 router-id 12.12.12.12
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]network 172.16.2.4 0.0.0.3
[r12-ospf-1-area-0.0.0.2]network 172.16.12.12 0.0.0.0
[r12-ospf-1-area-0.0.0.2]network 172.16.12.13 0.0.0.0
[r12-ospf-1-area-0.0.0.2]quit
[r12]rip 1
[r12-rip-1]version 2
[r12-rip-1]undo summary
[r12-rip-1]network 172.16.0.0
[r12-ospf-1]import-route rip
创建隧道,配置MGRE
[r3]int t0/0/0
[r3-Tunnel0/0/0]ip add 172.16.100.3 24
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp
[r3-Tunnel0/0/0]source 34.0.0.1
[r3-Tunnel0/0/0]nhrp network-id 100
[r3-Tunnel0/0/0]nhrp entry multicast dynamic
[r5]int t0/0/0
[r5-Tunnel0/0/0]ip add 172.16.100.5 24
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp
[r5-Tunnel0/0/0]source 45.0.0.2
[r5-Tunnel0/0/0]nhrp network-id 100
[r5-Tunnel0/0/0]nhrp entry 172.16.100.3 34.0.0.1 register
[r6]int t0/0/0
[r6-Tunnel0/0/0]ip add 172.16.100.6 24
[r6-Tunnel0/0/0]tunnel-protocol gre p2mp
[r6-Tunnel0/0/0]source 46.0.0.2
[r6-Tunnel0/0/0]nhrp network-id 100
[r6-Tunnel0/0/0]nhrp entry 172.16.100.3 34.0.0.1 register
[r7]int t0/0/0
[r7-Tunnel0/0/0]ip add 172.16.100.7 24
[r7-Tunnel0/0/0]tunnel-protocol gre p2mp
[r7-Tunnel0/0/0]source 47.0.0.2
[r7-Tunnel0/0/0]nhrp network-id 100
[r7-Tunnel0/0/0]nhrp entry 172.16.100.3 34.0.0.1 register
各设备都能访问R4环回
[r3]acl 2000
[r3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r3-acl-basic-2000]quit
[r3]interface Serial4/0/0
[r3-Serial4/0/0]nat outbound 2000
[r5]acl 2000
[r5-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r5-acl-basic-2000]quit
[r5]interface Serial4/0/0
[r5-Serial4/0/0]nat outbound 2000
[r6]acl 2000
[r6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r6-acl-basic-2000]quit
[r6]interface Serial3/0/0
[r6-Serial3/0/0]nat outbound 2000
[r7]acl 2000
[r7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r7-acl-basic-2000]quit
[r7]interface Serial4/0/2
[r7-Serial4/0/2]nat outbound 2000
减少LSA更新量
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0
[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0
[r7]ospf 1
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0
[r9]ospf 1
[r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0
[r12]ospf 1
[r12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0
[r1]ospf 1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]stub no-summary
[r2]ospf 1
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]stub no-summary
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]stub no-summary
[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]nssa no-summary
[r11]ospf 1
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.2]nssa no-summary
[r12]ospf 1
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]nssa no-summary
[r7]ospf 1
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]nssa no-summary
[r8]ospf 1
[r8-ospf-1]area 3
[r8-ospf-1-area-0.0.0.3]nssa no-summary
[r9]ospf 1
[r9-ospf-1]area 3
[r9-ospf-1-area-0.0.0.3]nssa no-summary
加快收敛修改hello时间
[r1]interface GigabitEthernet0/0/0
[r1-GigabitEthernet0/0/0]ospf timer hello 5
[r2]interface GigabitEthernet0/0/0
[r2-GigabitEthernet0/0/0]ospf timer hello 5
[r3]interface GigabitEthernet0/0/0
[r3-GigabitEthernet0/0/0]ospf timer hello 5
[r3]interface Tunnel0/0/0
[r3-Tunnel0/0/0]ospf timer hello 5
[r5]interface Tunnel0/0/0
[r5-Tunnel0/0/0]ospf timer hello 5
[r6]interface GigabitEthernet0/0/0
[r6-GigabitEthernet0/0/0]ospf timer hello 5
[r6]interface Tunnel0/0/0
[r6-Tunnel0/0/0]ospf timer hello 5
[r7]interface GigabitEthernet0/0/1
[r7-GigabitEthernet0/0/1]ospf timer hello 5
[r7]interface Tunnel0/0/0
[r7-Tunnel0/0/0]ospf timer hello 5
[r8]interface GigabitEthernet0/0/1
[r8-GigabitEthernet0/0/1]ospf timer hello 5
[r8]interface GigabitEthernet0/0/0
[r8-GigabitEthernet0/0/0]ospf timer hello 5
[r9]interface GigabitEthernet0/0/0
[r9-GigabitEthernet0/0/0]ospf timer hello 5
[r9]interface GigabitEthernet0/0/1
[r9-GigabitEthernet0/0/1]ospf timer hello 5
[r10]interface GigabitEthernet0/0/0
[r10-GigabitEthernet0/0/0]ospf timer hello 5
[r11]interface GigabitEthernet0/0/0
[r11-GigabitEthernet0/0/0]ospf timer hello 5
[r11]interface GigabitEthernet0/0/1
[r11-GigabitEthernet0/0/1]ospf timer hello 5
[r12]interface GigabitEthernet0/0/0
[r12-GigabitEthernet0/0/0]ospf timer hello 5
保证安全
[r1]ospf 1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
[r2]ospf 1
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456
[r5]ospf 1
[r5-ospf-1]area 0
[r5-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456
[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]authentication-mode md5 1 cipher 123456
[r6-ospf-1]area 0
[r6-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456
[r7]ospf 1
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]authentication-mode md5 1 cipher 123456
[r8]ospf 1
[r8-ospf-1]area 3
[r8-ospf-1-area-0.0.0.3]authentication-mode md5 1 cipher 123456
[r9]ospf 1
[r9-ospf-1]area 3
[r9-ospf-1-area-0.0.0.3]authentication-mode md5 1 cipher 123456
[r9]ospf 2
[r9-ospf-2]area 4
[r9-ospf-2-area-0.0.0.4]authentication-mode md5 1 cipher 123456
[r10]ospf 2
[r10-ospf-2]area 4
[r10-ospf-2-area-0.0.0.4]authentication-mode md5 1 cipher 123456
[r11]ospf 1
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.2]authentication-mode md5 1 cipher 123456
[r12]ospf 1
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]authentication-mode md5 1 cipher 123456
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