OSPF综合实验

1.R4为IsP,其上只能配置IP地址；R4与其他所有直连设备间均使用公有IP

2.R3-R5/6/7为MGRE环境，R3为中心站点；

ip地址划分
3.整个0SPF环境IP基于172.16.0.0/16划分；

r3

 r5

 r6

 r7

 配置完ospf后

由于通道p2p为点到点所以改为 broadcast

 4,所有设备均可访问R4的环回；

 ABR设备上做nat网络地址转换

 在ABR设备上做区域汇总

 在r12上做双向重发布

 所有设备此时均可访问ISP的环回

5.减少LSA的更新量，加快收敛，保障更新安全；

a 1区域（末梢区域）

a 2区域（非完全末梢区域） 

6.全网可达

[r12-ospf-1-area-0.0.0.2]ping -a 172.16.160.1 4.4.4.4
  PING 4.4.4.4: 56  data bytes, press CTRL_C to break
    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=30 ms
    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=20 ms
    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=30 ms
    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=30 ms
    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=30 ms
 
  --- 4.4.4.4 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 20/28/30 ms
 
[r12-ospf-1-area-0.0.0.2]ping -a 172.16.176.1 4.4.4.4
  PING 4.4.4.4: 56  data bytes, press CTRL_C to break
    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=30 ms
    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=20 ms
    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=20 ms
    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=40 ms
    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=20 ms
 
  --- 4.4.4.4 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 20/26/40 ms
<r10>ping -a 172.16.129.1 4.4.4.4
  PING 4.4.4.4: 56  data bytes, press CTRL_C to break
    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=252 time=50 ms
    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=252 time=40 ms
    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=252 time=30 ms
    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=252 time=30 ms
    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=252 time=40 ms
 
  --- 4.4.4.4 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 30/38/50 ms

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