从图中可以看出左侧是内外，中间AR2是外网，右侧采用easy nat
AR1动态nat配置如下:

[Huawei]sysname r1

int g0/0/01

ip address 172.16.1.254 24

int g0/0/0

ip address 202.169.10.1 24

int g0/0/02

ip address 172.17.1.254 24

设置静态路由：

[r1]ip route-static 0.0.0.0 0 202.169.10.2

int g0/0/0

nat static global 202.169.10.5 inside 172.16.1.1

nat address-group 1 202.169.10.50 202.169.10.60

[r1]acl 2000

rule permit source 172.17.1.0 0.0.0.255

nat outbound 2000 address-group 1 no-pat 

R3easy nat配置：

[r3]ip route-static 0.0.0.0 0 30.0.0.1

acl 2888

rule permit source 10.0.0.0 0.0.0.255

int g0/0/0 nat outbound 2888