配置IP地址
R1
R2
R3
R4
R6
R8
R11
R12
搭建MGRE环境
中心R3的配置:
R5-R7的配置
配置静态路实现公网可达:
[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
查看中心的NHRP映射表
配置OSPF路由协议
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]network 172.16.34.1 0.0.0.0
[R1-ospf-1-area-0.0.0.1]network 172.16.33.1 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 172.16.35.1 0.0.0.0
[R2-ospf-1-area-0.0.0.1]network 172.16.33.2 0.0.0.0
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]network 172.16.36.1 0.0.0.0
[R3-ospf-1-area-0.0.0.1]network 172.16.33.3 0.0.0.0
[R3-ospf-1-area-0.0.0.1]area 0
[R3-ospf-1-area-0.0.0.0]network 172.16.1.1 0.0.0.0
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 172.16.2.1 0.0.0.0
[R5-ospf-1-area-0.0.0.0]network 172.16.1.2 0.0.0.0
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 172.16.1.3 0.0.0.0
[R6-ospf-1-area-0.0.0.0]network 172.16.3.1 0.0.0.0
[R6-ospf-1-area-0.0.0.0]area 2
[R6-ospf-1-area-0.0.0.2]network 172.16.65.1 0.0.0.0
[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]area 0
[R7-ospf-1-area-0.0.0.0]network 172.16.1.4 0.0.0.0
[R7-ospf-1-area-0.0.0.0]network 172.16.4.1 0.0.0.0
[R7-ospf-1-area-0.0.0.0]area 3
[R7-ospf-1-area-0.0.0.3]network 172.16.97.1 0.0.0.0
[R8]ospf 1 router-id 8.8.8.8
[R8-ospf-1]area 3
[R8-ospf-1-area-0.0.0.3]network 172.16.97.2 0.0.0.0
[R8-ospf-1-area-0.0.0.3]network 172.16.98.1 0.0.0.0
[R8-ospf-1-area-0.0.0.3]network 172.16.97.9 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 172.16.97.10 0.0.0.0
[R9-ospf-1-area-0.0.0.3]area 4
[R9-ospf-1-area-0.0.0.4]network 172.16.130.1 0.0.0.0
[R9-ospf-1-area-0.0.0.4]network 172.16.129.1 0.0.0.0
[R10]ospf 1 router-id 10.10.10.10
[R10-ospf-1]area 4
[R10-ospf-1-area-0.0.0.4]network 172.16.129.2 0.0.0.0[R10-ospf-1-area-0.0.0.4]network 172.16.131.1 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 172.16.65.2 0.0.0.0[R11-ospf-1-area-0.0.0.2]network 172.16.66.1 0.0.0.0
[R11-ospf-1-area-0.0.0.2]network 172.16.65.9 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 172.16.65.10 0.0.0.0修改接口类型为P2MP(不参加DR选举),让路由器拥有多个邻居,
[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
查看建邻情况:
配置RIP协议
[R12]rip
[R12-rip-1]v 2
[R12-rip-1]network 172.16.0.0使用重发布,将rip路由导入到OSPF中:[R12-ospf-1]import-route rip 1
使用虚链路解决不规则区域
[R7-ospf-1-area-0.0.0.3]vlink-peer 9.9.9.9
[R9-ospf-1-area-0.0.0.3]vlink-peer 7.7.7.7
查看路由表
减少LSA更新,进行汇总(空接口防环)
[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-ospf-1]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-ospf-1]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
[r7-Tunnel0/0/0]ospf timer hello 10
配置NAT,进行上网,即可以访问R4的环回
[R3]acl 2000
[R3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R3-acl-basic-2000]int s 4/0/0
[R3-Serial4/0/0]nat outbound 2000下发缺省:[R3-ospf-1]default-route-advertise
测试:
[R7]acl 2001
[R7-acl-basic-2001]rule 5 permit source 172.16.0.0 0.0.255.255
[R7-acl-basic-2001]int g0/0/0
[R7-GigabitEthernet0/0/0]nat outbound 2001
[R7]ospf 1
[R7-ospf-1]default-route-advertise
测试:[R6]acl 2002
[R6-acl-basic-2002]rule permit source 172.16.0.0 0.0.255.255
[R6-acl-basic-2002]int s4/0/0
[R6-Serial4/0/0]nat outbound 2002
[R6]ospf 1
[R6-ospf-1]default-route-advertise
测试:测试全网可达: