0x13 HCNP-R&S GRE VPN实验（华为eNSP）

版权声明：本文为GJHe原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_35428201/article/details/82534775

实验拓扑

实验要求

1，公司A和公司B分别通过NAT接入到公网
2，公网配置静态路由互通 
3，公司A和公司B启用gre vpn 使两公司互通

接口IP基本配置

AR1

<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]un in en
Info: Information center is disabled.
[Huawei]sys AR1
[AR1]inter g0/0/0
[AR1-GigabitEthernet0/0/0]ip add 192.168.1.1 24
[AR1-GigabitEthernet0/0/0]inter g0/0/1
[AR1-GigabitEthernet0/0/1]ip add 1.1.1.1 24

AR2

<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]un in en
Info: Information center is disabled.
[Huawei]sys AR2
[AR2]inter g0/0/1
[AR2-GigabitEthernet0/0/1]ip add 2.2.2.1 24
[AR2-GigabitEthernet0/0/1]inter g0/0/0
[AR2-GigabitEthernet0/0/0]ip add 1.1.1.2 24

AR3

<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]un in en
Info: Information center is disabled.
[Huawei]sys AR3
[AR3]inter g0/0/0
[AR3-GigabitEthernet0/0/0]ip add 2.2.2.2 24
[AR3-GigabitEthernet0/0/0]inter g0/0/1
[AR3-GigabitEthernet0/0/1]ip add 3.3.3.1 24

AR4

<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]un in en
Info: Information center is disabled.
[Huawei]sys AR4
[AR4]inter g0/0/0
[AR4-GigabitEthernet0/0/0]ip add 3.3.3.2 24
[AR4-GigabitEthernet0/0/0]inter g0/0/2
[AR4-GigabitEthernet0/0/2]qu
[AR4]inter g0/0/1
[AR4-GigabitEthernet0/0/1]ip add 192.168.2.1 24

公网配置静态路由互通 

AR1

[AR1]ip route-static 0.0.0.0 0.0.0.0 1.1.1.2

AR2

[AR2]ip route-static 0.0.0.0 0.0.0.0 2.2.2.2

AR3

[AR3]ip route-static 0.0.0.0 0.0.0.0 2.2.2.1

AR4

[AR4]ip route-static 0.0.0.0 0.0.0.0 3.3.3.1

测试公网 已经通了

公网显然现实中使用静态路由走天下很不理想。还是使用动态路由更方便一些，这里我将采用OSPF

AR2

[AR2]ospf
[AR2-ospf-1]area 0	
[AR2-ospf-1-area-0.0.0.0]network 1.1.1.0 0.0.0.255
[AR2-ospf-1-area-0.0.0.0]network 2.2.2.0 0.0.0.255

AR3

[AR3]ospf 
[AR3-ospf-1]area 0
[AR3-ospf-1-area-0.0.0.0]net 2.2.2.0 0.0.0.255
[AR3-ospf-1-area-0.0.0.0]net 3.3.3.0 0.0.0.255

AR1

[AR1]ip route-static 0.0.0.0 0.0.0.0 1.1.1.2

AR4 

[AR4]ip route-static 0.0.0.0 0.0.0.0 3.3.3.1

 配置NAT

AR1

[AR1]acl number 2002
[AR1-acl-basic-2002]rule permit source 192.168.1.0 0.0.0.255
[AR1-acl-basic-2002]q
[AR1]int g0/0/1
[AR1-GigabitEthernet0/0/1]nat outbound 2002
[AR1-GigabitEthernet0/0/1]q

AR4

[AR4]acl number 2002
[AR4-acl-basic-2002]rule permit source 192.168.2.0 0.0.0.255
[AR4-acl-basic-2002]q
[AR4]inter g0/0/0
[AR4-GigabitEthernet0/0/0]nat outbound 2002
[AR4-GigabitEthernet0/0/0]q

PC2测试已经可以访问公网了

配置GRE VPN

AR1

[AR1]interface Tunnel 0/0/0
[AR1-Tunnel0/0/0]tunnel-protocol gre
[AR1-Tunnel0/0/0]ip add 192.168.3.1 24
[AR1-Tunnel0/0/0]source 1.1.1.1
[AR1-Tunnel0/0/0]destination 3.3.3.2
[AR1-Tunnel0/0/0]qu
[AR1]ip route-static 192.168.2.0 24 tunnel 0/0/0

AR4

[AR4]interface Tunnel0/0/0
[AR4-Tunnel0/0/0]ip add 192.168.3.2 24	
[AR4-Tunnel0/0/0]tunnel-protocol gre 
[AR4-Tunnel0/0/0]source 3.3.3.2 
[AR4-Tunnel0/0/0]destination 1.1.1.1
[AR4-Tunnel0/0/0]q
[AR4]ip route-static 192.168.1.0 24 tunnel 0/0/0

tracert 一下，看不到经过公网

到此结束！