DM×××的基本知识总结脑图:案例分析:拓扑图如下:要求:环境:Web IOU DM×××第三阶段 树状分支结构一、R2和R9是ISP,只需配置接口IP即可,不能进行任何配置。二、R1为总部HUB,R
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DM×××的基本知识总结脑图:
案例分析:
拓扑图如下:
要求:
环境:Web IOU
DM×××第三阶段 树状分支结构
一、R2和R9是ISP,只需配置接口IP即可,不能进行任何配置。
二、R1为总部HUB,R3和R4为分部spoke
三、R3为R5、R6的总部HUB,R5、R6位分站点spoke
四、R4为R7、R8的总部HUB,R7、R8位分站点spoke
五、无论总部还是分部都有一个环回接口作为内网
六、整个结构都运行EIGRP协议,但不能用关闭下一跳解析和水平分割实现一跳通信
七、实现R6与R7可以直接通信,不需要经过总部
分析:
1.首先,我们先需要保证公网相通,公网IP自己配置,但每个环回地址需要配置合理,因为R1需要下发汇总路由。 R3和R4指静态路由实现第一层的公网相通,通过配置默认路由实现第二层的公网相通。
2.在总部和分部配置nhrp时注意映射关系,保证分部和总部的建邻。还需要修改组播映射为伪广播,否则无法正常建邻。
3.我们在每个路由器上配置nhrp时需要注意把network-ID和tunnel key 配置为一样,保证正常通信。
4.在R3和R4上起两个隧道接口,一个接口为tunnel 0 是R1的spoke ,一个接口为tunnel 1 为下层的Hub。
5.如果我们使用的路由协议为OSPF时,则需要注意修改网络类型,MA网络下修改分部的优先级为0 DR为总部。
6.最后就是nhrp重定向,R6与R7直接通信,R6首先向R3发出地址解析请求,R3需要把这个请求重定向给R1,那么就需要在R3的tunnel 0 接口 和 tunnel 1 接口都配置ip nhrp redirect ,这样才能转发出去。R4同理配置
7.所以的总部tunnel口配置 ip nhrp redirect ,分部tunnel口配置为 ip nhrp shortcut 。
- nhrp协议需要一次通信来进行激活,这样才会出现标记为H的路由实现直接通信
配置:
R1配置:
interface Loopback0 ip address 10.100.1.1 255.255.255.0!interface Tunnel0 ip address 10.1.1.1 255.255.255.0 no ip redirects ip nhrp map multicast dynamic ip nhrp network-id 100 ip nhrp redirect ip summary-address eigrp 90 10.100.0.0 255.255.0.0 tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 12.1.1.1 255.255.255.0!router eigrp 90 network 10.0.0.0!ip route 0.0.0.0 0.0.0.0 12.1.1.2!
R2配置:
interface Ethernet0/0 ip address 12.1.1.2 255.255.255.0!interface Ethernet0/1 ip address 23.1.1.2 255.255.255.0!interface Ethernet0/2 ip address 24.1.1.2 255.255.255.0
R3配置:
interface Loopback0 ip address 10.100.3.3 255.255.255.0!interface Tunnel0 ip address 10.1.1.3 255.255.255.0 no ip redirects ip nhrp map 10.1.1.1 12.1.1.1 ip nhrp map multicast 12.1.1.1 ip nhrp network-id 100 ip nhrp nhs 10.1.1.1 ip nhrp shortcut ip nhrp redirect tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Tunnel1 ip address 10.2.1.1 255.255.255.0 no ip redirects ip nhrp map multicast dynamic ip nhrp network-id 100 ip nhrp redirect tunnel source Ethernet0/1 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 23.1.1.1 255.255.255.0!interface Ethernet0/1 ip address 39.1.1.1 255.255.255.0!!!router eigrp 90 network 10.0.0.0!ip forward-protocol nd!!no ip http serverno ip http secure-serverip route 0.0.0.0 0.0.0.0 39.1.1.2ip route 12.1.1.0 255.255.255.0 23.1.1.2ip route 24.1.1.0 255.255.255.0 23.1.1.2!
R4配置:
interface Loopback0 ip address 10.100.4.4 255.255.255.0!interface Tunnel0 ip address 10.1.1.4 255.255.255.0 no ip redirects ip nhrp map 10.1.1.1 12.1.1.1 ip nhrp map multicast 12.1.1.1 ip nhrp network-id 100 ip nhrp nhs 10.1.1.1 ip nhrp shortcut ip nhrp redirect tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Tunnel1 ip address 10.3.1.1 255.255.255.0 no ip redirects ip nhrp map multicast dynamic ip nhrp network-id 100 ip nhrp redirect tunnel source Ethernet0/1 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 24.1.1.1 255.255.255.0!interface Ethernet0/1 ip address 49.1.1.1 255.255.255.0!!router eigrp 90 network 10.0.0.0!ip route 0.0.0.0 0.0.0.0 49.1.1.2ip route 12.1.1.0 255.255.255.0 24.1.1.2ip route 23.1.1.0 255.255.255.0 24.1.1.2!
R9配置:
interface Ethernet0/0 ip address 39.1.1.2 255.255.255.0!interface Ethernet0/1 ip address 49.1.1.2 255.255.255.0!interface Ethernet0/2 ip address 59.1.1.2 255.255.255.0!interface Ethernet0/3 ip address 69.1.1.2 255.255.255.0! interface Ethernet1/0 ip address 79.1.1.2 255.255.255.0!interface Ethernet1/1 ip address 89.1.1.2 255.255.255.0
R5配置:
interface Loopback0 ip address 10.100.5.5 255.255.255.0!interface Tunnel0 ip address 10.2.1.5 255.255.255.0 no ip redirects ip nhrp map 10.2.1.1 39.1.1.1 ip nhrp map multicast 39.1.1.1 ip nhrp network-id 100 ip nhrp nhs 10.2.1.1 ip nhrp shortcut tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 59.1.1.1 255.255.255.0!i!!router eigrp 90 network 10.0.0.0!ip route 0.0.0.0 0.0.0.0 59.1.1.2
R6配置:
interface Loopback0 ip address 10.100.6.6 255.255.255.0!interface Tunnel0 ip address 10.2.1.6 255.255.255.0 no ip redirects ip nhrp map 10.2.1.1 39.1.1.1 ip nhrp map multicast 39.1.1.1 ip nhrp network-id 100 ip nhrp nhs 10.2.1.1 ip nhrp shortcut tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 69.1.1.1 255.255.255.0!!router eigrp 90 network 10.0.0.0!ip route 0.0.0.0 0.0.0.0 69.1.1.2!
R7配置:
interface Loopback0 ip address 10.100.7.7 255.255.255.0!interface Tunnel0 ip address 10.3.1.7 255.255.255.0 no ip redirects ip nhrp map 10.3.1.1 49.1.1.1 ip nhrp map multicast 49.1.1.1 ip nhrp network-id 100 ip nhrp nhs 10.3.1.1 ip nhrp shortcut tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 79.1.1.1 255.255.255.0!!router eigrp 90 network 10.0.0.0ip route 0.0.0.0 0.0.0.0 79.1.1.2!
R8配置:
interface Loopback0 ip address 10.100.8.8 255.255.255.0!interface Tunnel0 ip address 10.3.1.8 255.255.255.0 no ip redirects ip nhrp map 10.3.1.1 49.1.1.1 ip nhrp map multicast 49.1.1.1 ip nhrp network-id 100 ip nhrp nhs 10.3.1.1 ip nhrp shortcut tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel key 100!interface Ethernet0/0 ip address 89.1.1.1 255.255.255.0!!router eigrp 90 network 10.0.0.0!ip route 0.0.0.0 0.0.0.0 89.1.1.2!
结果展示:
R6 traceroute R7
R6路由表:
出现了一条下一跳为10.3.1.7(R7 tunnel口)的去R7环回的路由 标记为H
以上就是我对DM×××之MGRE的简单总结和配置,请大家多多指点。。谢谢~
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