目录
题目：
步骤二：拓扑设计与地址规划编辑
步骤三：IP地址配置
步骤四：缺省路由配置
步骤五：NAT的配置
步骤六：MGRE配置
中心站点R1配置
分支站点配置
中心站点R5 R1配置
分支站点配置
检测：
步骤七：使用OSPF配置路由
1.配置OSPF
2.修改接口网络类型
3.打开伪广播
4.强制规定DR
步骤八：检测
检测一：随机找俩台设备访问对方
检测二：随机抓包
题目：
步骤二：拓扑设计与地址规划
步骤三：IP地址配置
R1
[R1-GigabitEthernet0/0/0]ip add 192.168.1.1 24
[R1-GigabitEthernet0/0/1]ip add 16.1.1.1 24
[R1-GigabitEthernet0/0/2]ip add 61.1.1.1 24R2
[R2-GigabitEthernet0/0/0]ip add 192.168.2.1 24
[R2-GigabitEthernet0/0/1]ip add 2.1.1.1 24R3
[R3-GigabitEthernet0/0/0]ip add 192.168.3.1 24
[R3-GigabitEthernet0/0/1]ip add 3.1.1.1 24R4
[R4]int l 0
[R4-LoopBack0]ip add 4.4.4.4 24
[R4-GigabitEthernet0/0/0]ip add 61.1.1.2 24
[R4-GigabitEthernet0/0/2]ip add 16.1.1.2 24
[R4-GigabitEthernet0/0/1]ip add 2.1.1.2 24
[R4-GigabitEthernet4/0/0]ip add 3.1.1.2 24
[R4-GigabitEthernet4/0/2]ip add 5.1.1.2 24
[R4-GigabitEthernet4/0/1]ip add 6.1.1.2 24R5
[R5-GigabitEthernet0/0/0]ip add 192.168.5.1 24
[R5-GigabitEthernet0/0/1]ip add 5.1.1.1 24R6
[R6-GigabitEthernet0/0/0]ip ADD 192.168.6.1 24
[R6-GigabitEthernet0/0/1]ip add 6.1.1.1 24步骤四：缺省路由配置
[R1]ip route-static 0.0.0.0 0 16.1.1.2
[R1]ip route-static 0.0.0.0 0 61.1.1.2
[R2]ip route-static 0.0.0.0 0 2.1.1.2
[R3]ip route-static 0.0.0.0 0 3.1.1.2
[R5]ip route-static 0.0.0.0 0 5.1.1.2
[R6]ip route-static 0.0.0.0 0 6.1.1.2步骤五：NAT的配置
除路由器R4以外，其余R4直连的路由器接口均配置以下命令：
acl 2000
rule 1 permit source any
int g 0/0/1
nat outbound 2000
步骤六：MGRE配置
中心站点R1配置
[R1]int t 0/0/0
[R1-Tunnel0/0/0]ip add 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre p2mp
[R1-Tunnel0/0/0]source 16.1.1.1
[R1-Tunnel0/0/0]nhrp network-id 100分支站点配置
R2
[R3]int t 0/0/0
[R3-Tunnel0/0/0]ip add 10.1.1.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]source GigabitEthernet 0/0/1
[R3-Tunnel0/0/0]nhrp entry 10.1.1.1 16.1.1.1 register
[R3-Tunnel0/0/0]nhrp network-id 100R3
[R2]int t 0/0/0
[R2-Tunnel0/0/0]ip add 10.1.1.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp
[R2-Tunnel0/0/0]source GigabitEthernet 0/0/1
[R2-Tunnel0/0/0]nhrp entry 10.1.1.1 16.1.1.1 register
[R2-Tunnel0/0/0]nhrp network-id 100中心站点R5 R1配置
R1
[R1]int t 0/0/1
[R1-Tunnel0/0/1]ip add 20.1.1.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre p2mp
[R1-Tunnel0/0/1]source 61.1.1.1
[R1-Tunnel0/0/1]nhrp network-id 101
[R1-Tunnel0/0/1]nhrp entry 20.1.1.2 5.1.1.1 register R5
[R5]int t 0/0/1
[R5-Tunnel0/0/1]ip add 20.1.1.2 24
[R5-Tunnel0/0/1]tunnel-protocol gre p2mp
[R5-Tunnel0/0/1]source 5.1.1.1
[R5-Tunnel0/0/1]nhrp network-id 101
[R5-Tunnel0/0/1]nhrp entry 20.1.1.1 61.1.1.1 register 分支站点配置
R6
[R6]int t 0/0/1
[R6-Tunnel0/0/1]ip add 20.1.1.3 24
[R6-Tunnel0/0/1]tunnel-protocol gre p2mp
[R6-Tunnel0/0/1]source GigabitEthernet 0/0/1
[R6-Tunnel0/0/1]nhrp entry 20.1.1.1 61.1.1.1 register
[R6-Tunnel0/0/1]nhrp entry 20.1.1.2 5.1.1.1 register
[R6-Tunnel0/0/1]nhrp network-id 101检测：
[R1]display nhrp peer all
-------------------------------------------------------------------------------
Protocol-addr Mask NBMA-addr NextHop-addr Type Flag
-------------------------------------------------------------------------------
10.1.1.2 32 2.1.1.1 10.1.1.2 dynamic route tunnel
-------------------------------------------------------------------------------
Tunnel interface: Tunnel0/0/0
Created time : 00:00:56
Expire time : 01:59:04
-------------------------------------------------------------------------------
Protocol-addr Mask NBMA-addr NextHop-addr Type Flag
-------------------------------------------------------------------------------
10.1.1.3 32 3.1.1.1 10.1.1.3 dynamic route tunnel
-------------------------------------------------------------------------------
Tunnel interface: Tunnel0/0/0
Created time : 00:00:16
Expire time : 01:59:44
-------------------------------------------------------------------------------
Protocol-addr Mask NBMA-addr NextHop-addr Type Flag
-------------------------------------------------------------------------------
20.1.1.2 32 5.1.1.1 20.1.1.2 static hub
-------------------------------------------------------------------------------
Tunnel interface: Tunnel0/0/1
Created time : 00:14:58
Expire time : --
-------------------------------------------------------------------------------
Protocol-addr Mask NBMA-addr NextHop-addr Type Flag
-------------------------------------------------------------------------------
20.1.1.3 32 6.1.1.1 20.1.1.3 dynamic route tunnel
-------------------------------------------------------------------------------
Tunnel interface: Tunnel0/0/1
Created time : 00:15:18
Expire time : 01:44:42
Number of nhrp peers: 4步骤七：使用OSPF配置路由
1.配置OSPF
R1
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 20.1.1.0 0.0.0.255R2
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 192.168.2.0 0.0.0.255R3
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 192.168.3.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255R5
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 192.168.5.0 0.0.0.255
[R5-ospf-1-area-0.0.0.0]network 20.1.1.0 0.0.0.255R6
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 20.1.1.0 0.0.0.255
[R6-ospf-1-area-0.0.0.0]network 192.168.6.0 0.0.0.2552.修改接口网络类型
查看接口网络类型方法：
display ospf interface Tunnel 0/0/0
修改接口网络类型方法：
进入对应接口(隧道接口)后 ospf network-type ~类型~
3.打开伪广播
进入对应接口(中心站点隧道)后 nhrp entry multicast dynamic
4.强制规定DR
将同时存在于俩个MGRE网络内的路由器设置为DR
更改一些接口优先级，以达让某些路由器接口不参与选举
进入对应接口(隧道接口)后 ospf dr-priority 0
步骤八：检测
检测一：随机找俩台设备访问对方
检测二：随机抓包
