华为ospf不规则区域实验

1.接口以及环回口的IP的基础配置

2.配置静态路由指向R7外网

[R1]ip route-static 0.0.0.0 0 17.1.1.7
 
[R2]ip route-static 0.0.0.0 0 27.1.1.7
 
[R3]ip route-static 0.0.0.0 0 37.1.1.7
 
[R4]ip route-static 0.0.0.0 0 34.1.1.3
 
[R5]ip route-static 0.0.0.0 0 45.1.1.4
 
[R6]ip route-static 0.0.0.0 0 56.1.1.5
 

3.设置tunnel口使得R1/2/3为全连MGRE结构

[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]ip address 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R1-Tunnel0/0/0]source 17.1.1.1
[R1-Tunnel0/0/0]nhrp entry multicast dynamic 
[R1-Tunnel0/0/0]nhrp network-id 100
[R1-Tunnel0/0/0]nhrp entry 10.1.1.2 27.1.1.2 register 
[R1-Tunnel0/0/0]nhrp entry 10.1.1.3 37.1.1.3 register 
 
 
[R2]interface Tunnel 0/0/0
[R2-Tunnel0/0/0]ip address 10.1.1.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R2-Tunnel0/0/0]source 27.1.1.2
[R2-Tunnel0/0/0]nhrp entry multicast dynamic 
[R2-Tunnel0/0/0]nhrp network-id 100
[R2-Tunnel0/0/0]nhrp entry 10.1.1.1 17.1.1.1 register 
[R2-Tunnel0/0/0]nhrp entry 10.1.1.3 37.1.1.3 register 
 
 
[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]ip address 10.1.1.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R3-Tunnel0/0/0]source 37.1.1.3
[R3-Tunnel0/0/0]nhrp entry multicast dynamic 
[R3-Tunnel0/0/0]nhrp network-id 100
[R3-Tunnel0/0/0]nhrp entry 10.1.1.1 17.1.1.1 register 
[R3-Tunnel0/0/0]nhrp entry 10.1.1.2 27.1.1.2 register 

 由于用tunnel口进行vpn逻辑专线，而其默认口为点到点，要修改其类型为广播boardcast

[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]ospf network-type broadcast 
 
[R2]interface Tunnel 0/0/0
[R2-Tunnel0/0/0]ospf network-type broadcast 
 
[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]ospf network-type broadcast 

4.利用ospf协议使得全网互通

 
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
 
 
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
 
R3的区域0
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
R3的区域1
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]network 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.1]network 34.1.1.0 0.0.0.255
 
 
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 1
[R4-ospf-1-area-0.0.0.1]network 34.1.1.0 0.0.0.255
[R4-ospf-1-area-0.0.0.1]network 4.4.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.1]network 45.1.1.0 0.0.0.255
 
R5的区域1
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 1
[R5-ospf-1-area-0.0.0.1]network 5.5.5.5 0.0.0.0 
[R5-ospf-1-area-0.0.0.1]network 45.1.1.0 0.0.0.255
R5的区域2
[R5-ospf-1]area 2
[R5-ospf-1-area-0.0.0.2]network 56.1.1.0 0.0.0.255
 
 
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 2
[R6-ospf-1-area-0.0.0.2]network 6.6.6.6 0.0.0.0
[R6-ospf-1-area-0.0.0.2]network 56.1.1.0 0.0.0.255
 

5.此实验为不规则区域，a2为远离中心a0的区域，所以不能连通，方法有：

1.建立tunnel，在两台ABR间建立VPN隧道；之后将该隧道链路宣告到OSPF协议中

2.建立虚连接，非法ABR向合法ABR要授权

3.多进程双向重发布，在一台ABR上建立多个进程，收集各自进程的邻居进自身数据库，在建立一台ASBR（自治系统边界路由器），将不同协议学习到的路由分享到其他协议里

这里用虚连接：

[R3]ospf 1
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]vlink-peer 5.5.5.5
 
 
[R5]ospf 1
[R5-ospf-1]area 1
[R5-ospf-1-area-0.0.0.1]vlink-peer 3.3.3.3

6.让R4-R6可以正常访问环回

在R3上创建NAT，使私网可以访问外网

[R3]acl 2000	
[R3-acl-basic-2000]rule permit source 34.1.1.0 0.0.0.255
[R3-acl-basic-2000]rule permit source 45.1.1.0 0.0.0.255
[R3-acl-basic-2000]rule permit source 56.1.1.0 0.0.0.255
[R3-acl-basic-2000]rule permit source 4.4.4.4 0.0.0.0
[R3-acl-basic-2000]rule permit source 5.5.5.5 0.0.0.0
[R3-acl-basic-2000]rule permit source 6.6.6.6 0.0.0.0
 
[R3]interface GigabitEthernet 0/0/0
[R3-GigabitEthernet0/0/0]nat outbound 2000

7.R1telnetR3公有IP，实际登录到R6

1）在R6上创建远程登录

[R6]aaa
[R6-aaa]local-user huawei password cipher 123
Info: Add a new user.
[R6-aaa]local-user huawei service-type telnet
[R6-aaa]local-user huawei privilege level 15
 
[R6]user-interface vty 0 4
[R6-ui-vty0-4]authentication-mode aaa

2）在R3上的公有IP地址接口创建NAT转接

[R3]interface g0/0/0
[R3-GigabitEthernet0/0/0]nat server protocol tcp global current-interface 23 ins
ide 56.1.1.6 23
Warning:The port 23 is well-known port. If you continue it may cause function fa
ilure.
Are you sure to continue?[Y/N]:y

最后<r1>telnet  37.1.1.3检查一下