HCIP ospf综合实验

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均使用公有IP
2、R3 5 6 7为MGRE环境，R3为中心站点
3、整个OSPF环境基于 172.16.0.0 16 划分
4、所有设备均可以访问R4的环回
5、减少LSA更新量，加快收敛，保障更新安全
6、全网可达

做法：

首先，进行ip地址划分

172.16.0.0 16

172.16.0.0 17 ---ospf
172.16.0.128 17 ---rip

172.16.0.0 20 ---area 0
172.16.16.0 20 ---area 1
172.16.32.0 20 ---area 2
172.16.48.0 20 ---area 3
172.16.64.0 20 ---area 4
172.16.80.0 20
172.16.96.0 20
172.16.112.0 20

此为总体，详细处在图上显示

其次，给各个路由器配置地址

R1:
[r1-GigabitEthernet0/0/0]ip address 172.16.16.1 29
[r1-LoopBack0]ip address 172.16.17.1 24

R2:
[r2-GigabitEthernet0/0/0]ip address 172.16.16.2 29
[r2-LoopBack0]ip address 172.16.18.1 24

R3:
[r3-GigabitEthernet0/0/0]ip address 172.16.16.3 29
[r3-LoopBack0]ip address 172.16.19.1 24
[r3-Serial2/0/0]ip address 34.0.0.3 24

R4:
[isp-Serial2/0/0]ip address 34.0.0.4 24
[isp-LoopBack0]ip address 4.4.4.4 24
[isp-Serial2/0/1]ip address 46.0.0.4 24
[isp-Serial3/0/0]ip address 45.0.0.4 24
[isp-GigabitEthernet0/0/0]ip address 47.0.0.4 24

R5:
[r5-Serial2/0/0]ip address 172.16.1.1 24
[r5-Serial2/0/0]ip address 45.0.0.5 24
[r5-LoopBack0]ip address 172.16.1.1 24

R6:
[r6-Serial2/0/0]ip address 46.0.0.6 24
[r6-LoopBack0]ip address 172.16.2.1 24
[r6-GigabitEthernet0/0/0]ip address 172.16.33.1 30

R7:
[r7-GigabitEthernet0/0/0]ip address 47.0.0.7 24
[r7-GigabitEthernet0/0/1]ip address 172.16.49.1 30
[r7-LoopBack0]ip address 172.16.3.1 24

R8:
[r8-GigabitEthernet0/0/0]ip address 172.16.49.2 30
[r8-GigabitEthernet0/0/1]ip address 172.16.49.5 30
[r8-LoopBack0]ip address 172.16.48.1 24

R9:
[r9-GigabitEthernet0/0/0]ip address 172.16.49.6 30
[r9-GigabitEthernet0/0/1]ip address 172.16.66.1 30
[r9-LoopBack0]ip address 172.16.64.1 24

R10:
[r10-GigabitEthernet0/0/0]ip address 172.16.66.2 30
[r10-LoopBack0]ip address 172.16.65.1 24

R11:
[r11-GigabitEthernet0/0/0]ip address 172.16.33.2 30
[r11-GigabitEthernet0/0/1]ip address 172.16.33.5 30
[r11-LoopBack0]ip address 172.16.32.1 24

R12:
[r12-GigabitEthernet0/0/0]ip address 172.16.33.6 30
[r12-LoopBack0]ip address 172.16.128.1 18
[r12-LoopBack1]ip address 172.16.192.1 18

其次，进行MGRE环境的搭建

R3:

[r3]int Tunnel 0/0/0
[r3-Tunnel0/0/0]ip address 172.16.0.1 24
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp
[r3-Tunnel0/0/0]source 34.0.0.3
[r3-Tunnel0/0/0]nhrp entry multicast dynamic

[r3]ip route-static 0.0.0.0 0 34.0.0.4

R5:

[r5]int Tunnel 0/0/0
[r5-Tunnel0/0/0]ip address 172.16.0.2 24
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp
[r5-Tunnel0/0/0]source Serial 2/0/0
[r5-Tunnel0/0/0]nhrp entry 172.16.0.1 34.0.0.3 register
[r5]ip route-static 0.0.0.0 0 45.0.0.4

R6:

[r6]int Tunnel 0/0/0
[r6-Tunnel0/0/0]ip address 172.16.0.3 24
[r6-Tunnel0/0/0]tunnel-protocol gre p2mp
[r6-Tunnel0/0/0]source Serial 2/0/0
[r6-Tunnel0/0/0]nhrp entry 172.16.0.1 34.0.0.3 register
[r6]ip route-static 0.0.0.0 0 46.0.0.4

R7:

[r7]int Tunnel 0/0/0
[r7-Tunnel0/0/0]ip address 172.16.0.4 24
[r7-Tunnel0/0/0]tunnel-protocol gre p2mp
[r7-Tunnel0/0/0]source GigabitEthernet 0/0/0
[r7-Tunnel0/0/0]nhrp entry 172.16.0.1 34.0.0.3 register
[r7]ip route-static 0.0.0.0 0 47.0.0.4

随后，进行映射检验

随后，进行area区域配置

先进行area 0 配置

R3:

[r3]ospf router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 172.16.0.1 0.0.0.0

[r3-Tunnel0/0/0]ospf network-type p2mp

R5:

[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]area 0
[r5-ospf-1-area-0.0.0.0]network 172.16.0.2 0.0.0.0

[r5-ospf-1]int t 0/0/0
[r5-Tunnel0/0/0]ospf network-type p2mp

R6:

[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]area 0
[r6-ospf-1-area-0.0.0.0]network 172.16.0.3 0.0.0.0

[r6-ospf-1]int t 0/0/0
[r6-Tunnel0/0/0]ospf network-type p2mp

R7:

[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.4 0.0.0.0

[r7-ospf-1]int t 0/0/0
[r7-Tunnel0/0/0]ospf network-type p2mp

随后，检验ospf邻居表

随后，配置area1

R1:
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]network 0.0.0.0 255.255.255.255

R2:
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]network 0.0.0.0 255.255.255.255

R3:
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 172.16.16.0 0.15.255.255

随后，配置area2

R6:

[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]network 172.16.33.1 0.0.0.0

R11:

[r11]ospf 1 router-id 11.11.11.11
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.2]network 0.0.0.0 255.255.255.255

R12:

[r12]ospf 1 router-id 12.12.12.12
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]network 172.16.33.6 0.0.0.0

此间，顺带做rip

[r12]rip 1
[r12-rip-1]ver 2
[r12-rip-1]undo summary
[r12-rip-1]network 172.16.0.0

[r12]ospf 1
[r12-ospf-1]import-route rip 1

[r12]rip 1
[r12-rip-1]import-route ospf 1

随后，配置area3

R7:

[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]network 172.16.49.1 0.0.0.0

R8:

[r8]ospf 1 router-id 8.8.8.8
[r8-ospf-1]area 3
[r8-ospf-1-area-0.0.0.3]network 0.0.0.0 255.255.255.255

R9:

[r9]ospf router-id 9.9.9.9
[r9-ospf-1]area 3
[r9-ospf-1-area-0.0.0.3]network 172.16.49.6 0.0.0.0

随后，配置area4

R9:

[r9]ospf 2 router-id 9.9.9.9
[r9-ospf-2]area 4
[r9-ospf-2-area-0.0.0.4]network 172.16.64.0 0.15.255.255

R10:

[r10]ospf 1 router-id 10.10.10.10
[r10-ospf-1]area 4
[r10-ospf-1-area-0.0.0.4]network 0.0.0.0 255.255.255.255

检验通达

随后，减少LSA量

R3:

[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]abr-summary 172.16.16.0 255.255.240.0

R6:

[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]abr-summary 172.16.32.0 255.255.240.0

R7:

[r7]ospf 1
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]abr-summary 172.16.48.0 255.255.240.0

R9:

[r9]ospf 1
[r9-ospf-1]asbr-summary 172.16.64.0 255.255.240.0

R12:

[r12]ospf 1
[r12-ospf-1]asbr-summary 172.16.128.0 255.255.128.0

其中，该拓扑图还可以通过stub 与 nass 继续减少LSA量，

area 1做stub

area 2 3 做nass，在此不多展示

至此，实验完成