地址划分
172.16.0.0/16
172.16.0.0/19 —— area0
172.16.0.0/24 —— p2p的骨干
172.16.0.0/30
172.16.0.4/30
172.16.0.8/30
…
172.16.1.0/24 —— MA的骨干
172.16.1.0/29
172.16.1.8/29
…
172.16.2.0/24 —— 用户
…
172.16.31.0/24
后面区域划分以此类推
172.16.32.0/19 —— area1
172.16.64.0/19 —— area2
172.16.96.0/19 —— area3
172.16.128.0/19 —— area4
172.16.168.0/19 —— rip
备用
172.16.0.0/19
172.16.0.0/19
配置IP地址及环回地址
【R1】
[r1-GigabitEthernet0/0/0]ip ad 172.16.33.1 29
[r1-LoopBack0]ip ad 172.16.34.1 24
【R2】
[r2-GigabitEthernet0/0/0]ip ad 172.16.33.2 29
[r2-LoopBack0]ip ad 172.16.35.1 24
【R3】
[r3-GigabitEthernet0/0/0]ip ad 172.16.33.3 29
[r3-LoopBack0]ip ad 172.16.36.1 24
[r3-Serial4/0/0]ip ad 34.0.0.1 24
【R4】
[isp-Serial4/0/0]ip ad 34.0.0.2 24
[isp-Serial3/0/0]ip ad 46.0.0.2 24
[isp-Serial4/0/1]ip a d45.0.0.2 24
[isp-GigabitEthernet0/0/0]ip ad 47.0.0.2 24
[isp-LoopBack0]ip ad 4.4.4.4 24
【R5】
[r5-Serial4/0/0]ip a 45.0.0.1 24
[r5-LoopBack0]ip a 172.16.2.1 24
【R6】
[r6-Serial4/0/0]ip a 46.0.0.1 24
[r6-GigabitEthernet0/0/0]ip ad 172.16.64.1 30
[r6-LoopBack0]ip a 172.16.3.1 24
【R7】
[r7-GigabitEthernet0/0/1]ip a 172.16.96.1 30
[r7-GigabitEthernet0/0/0]ip a 47.0.0.1 24
[r7-LoopBack0]ip a 172.16.4.1 24
【R8】
[r8-GigabitEthernet0/0/0]ip ad 172.16.96.2 30
[r8-GigabitEthernet0/0/1]ip ad 172.16.96.5 30
[r8-LoopBack0]ip a 172.16.98.1 24
【R9】
[r9-GigabitEthernet0/0/0]ip ad 172.16.96.6 30
[r9-GigabitEthernet0/0/1]ip ad 172.16.128.1 30
[r9-LoopBack0]ip a 172.16.130.1 24
【R10】
[r10-GigabitEthernet0/0/1]ip ad 172.16.128.2 30
[r10-LoopBack0]ip a 172.16.131.1 24
【R11】
[r11-GigabitEthernet0/0/0]ip ad 172.16.64.2 30
[r11-GigabitEthernet0/0/1]ip ad 172.16.64.5 30
[r11-LoopBack0]ip a 172.16.66.1 24
【R12】
[r12-GigabitEthernet0/0/0]ip ad 172.16.64.26 30
[r12-LoopBack1]ip a 172.16.160.1 20
[r12-LoopBack0]ip a 172.16.176.1 20
配置缺省路由
[r3]ip route-static 0.0.0.0 0 34.0.0.2
[r5]ip route-static 0.0.0.0 0 45.0.0.2
[r6]ip route-static 0.0.0.0 0 46.0.0.2
[r7]ip route-static 0.0.0.0 0 47.0.0.2
配置OSPF
【R1】
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255
【R2】
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]a 1
[r2-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255
【R3】
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]a 1
[r3-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.7.255
[r3-ospf-1-area-0.0.0.1]a 0
[r3-ospf-1-area-0.0.0.0]net
[r3-ospf-1-area-0.0.0.0]network 172.16.1.1 0.0.0.0
【R5】
[r5]ospf 1 rout
[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]a 0
[r5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
【R6】
[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]a 0
[r6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.3.255
[r6-ospf-1-area-0.0.0.0]a 2
[r6-ospf-1-area-0.0.0.2]network 172.16.64.1 0.0.0.0
【R7】
[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]a 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.7.255
[r7-ospf-1-area-0.0.0.0]a 3
[r7-ospf-1-area-0.0.0.3]network 172.16.96.1 0.0.0.0
【R8】
[r8]ospf 1 router-id 8.8.8.8
[r8-ospf-1]a 3
[r8-ospf-1-area-0.0.0.3]network 172.16.0.0 0.0.255.255
【R9】
[r9]ospf 2 router-id 9.9.9.9
[r9-ospf-1]a 3
[r9-ospf-1-area-0.0.0.3]network 172.16.96.6 0.0.0.0
[r9-ospf-1-area-0.0.0.3]a 4
[r9-ospf-1-area-0.0.0.4]network 172.16.128.0 0.0.3.255
【R10】
[r10]ospf 1 router-id 10.10.10.10
[r10-ospf-1]a 4
[r10-ospf-1-area-0.0.0.4]network 172.16.0.0 0.0.255.255
【R11】
[r11]ospf 1 router-id 11.11.11.11
[r11-ospf-1]a 2
[r11-ospf-1-area-0.0.0.2]network 172.16.0.0 0.0.255.255
【R12】
[r12]ospf 1 router-id 12.12.12.12
[r12-ospf-1]a 2
[r12-ospf-1-area-0.0.0.2]network 172.16.64.6 0.0.0.0
[r12]rip 1
[r12-rip-1]v 2
[r12-rip-1]network 172.16.0.0
MGRE配置
中心配置
【R3】
[r3]interface Tunnel0/0/0
[r3-Tunnel0/0/0]ip address 172.16.1.1 29
[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
分支配置
【R5】
[r5]interface Tunnel0/0/0
[r5-Tunnel0/0/0] ip address 172.16.1.2 29
[r5-Tunnel0/0/0] tunnel-protocol gre p2mp
[r5-Tunnel0/0/0] source Serial4/0/0
[r5-Tunnel0/0/0] nhrp network-id 100
[r5-Tunnel0/0/0] nhrp entry 172.16.1.1 34.0.0.1 register
【R6】
[r6]interface Tunnel0/0/0
[r6-Tunnel0/0/0] ip address 172.16.1.3 29
[r6-Tunnel0/0/0] tunnel-protocol gre p2mp
[r6-Tunnel0/0/0] source Serial4/0/0
[r6-Tunnel0/0/0] nhrp network-id 100
[r6-Tunnel0/0/0] nhrp entry 172.16.1.1 34.0.0.1 register
【R7】
[r7] interface Tunnel0/0/0
[r7-Tunnel0/0/0] ip address 172.16.1.4 29
[r7-Tunnel0/0/0] tunnel-protocol gre p2mp
[r7-Tunnel0/0/0] source GigabitEthernet0/0/0
[r7-Tunnel0/0/0] nhrp network-id 100
[r7-Tunnel0/0/0] nhrp entry 172.16.1.1 34.0.0.1 register
修改Tunnel的网络类型为p2mp,不需要进行DR、BDR选举
[r3-Tunnel0/0/0]ospf network-type p2mp
[r5-Tunnel0/0/0]ospf network-type p2mp
[r6-Tunnel0/0/0]ospf network-type p2mp
[r7-Tunnel0/0/0]ospf network-type p2mp
重发布
area4区域和rip区域间缺失的路由信息,需要我们手工使用重发布的方式导入rip路由和area4的路由信息
[r12-ospf-1]import-route rip 1
[r9-ospf-1]import-route ospf 2
其中r9使用单向重发布,以便形成特殊区域,但是R10里面会发现没有其他的路由信息,这时我们可以下发一条缺省路由指向我们的R9
[r9-ospf-2]default-route-advertise
路由汇总及防环
[r3-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0
[r3]ip route-static 172.16.32.0 19 NULL 0
[r6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0
[r6]ip route-static 172.16.64.0 19 NULL 0
[r7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0
[r7]ip route-static 172.16.96.0 19 NULL 0
[r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0
[r9]ip route-static 172.16.128.0 19 NULL 0
[r12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0
[r12]ip route-static 172.16.160.0 19 NULL 0
特殊区域
area 0:
[r1]os
[r1]ospf 1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]stub
[r2]ospf 1
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]stub
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]stub no-summary
area 2
[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
[r12]ospf 1
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]nssa
area3
[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
[r9]ospf 1
[r9-ospf-1]area 3
[r9-ospf-1-area-0.0.0.3]nssa
配置NET,使其均可访问R4环回
[r3]acl 2000
[r3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r3-Serial4/0/0]nat outbound 2000
[r7]acl 2000
[r7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r7-GigabitEthernet0/0/0]nat outbound 2000
[r6]acl 2000
[r6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r6-Serial4/0/0]nat outbound 2000
加快收敛
[r3-Tunnel0/0/0]ospf timer hello 10
[r5-Tunnel0/0/0]ospf timer hello 10
[r6-Tunnel0/0/0]ospf timer hello 10
[r6-Tunnel0/0/0]ospf timer hello 10
更新安全(手工认证)
[r1]ospf 1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]authentication-mode md5 1 123
[r2]ospf 1
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123