R1：
<Huawei>system-view
Huawei\]sysname R1 \[R1\]int g0/0/0 \[R1-GigabitEthernet0/0/0\]ip add 172.16.1.1 24 \[R1-GigabitEthernet0/0/0\]int g0/0/1 \[R1-GigabitEthernet0/0/1\]ip add 10.10.1.1 24 \[R1-GigabitEthernet0/0/1\]quit \[R1\]vlan 10 //e口是二层口，无法配置IP，需要用VLAN来配置IP \[R1-vlan10\]int vlanif 10 \[R1-Vlanif10\]ip add 192.168.1.1 24 \[R1-Vlanif10\]quit \[R1\]int e0/0/0 \[R1-Ethernet0/0/0\]port link-type access \[R1-Ethernet0/0/0\]port default vlan 10 \[R1-Ethernet0/0/0\]quit \[R1\]ip route-static 192.168.3.0 24 172.16.1.2 preference 60 //静态路由默认60优先级，数字越大，优先级越小 \[R1\]ip route-static 192.168.3.0 24 10.10.1.2 preference 70 \[R1\]ip route-static 192.168.2.0 24 10.10.1.2 preference 60 \[R1\]ip route-static 192.168.2.0 24 172.16.1.2 preference 70
R2：
<Huawei>sys
Huawei\]sys R2 \[R2\]int g0/0/0 \[R2-GigabitEthernet0/0/0\]ip add 172.16.1.2 24 \[R2-GigabitEthernet0/0/0\]int g0/0/1 \[R2-GigabitEthernet0/0/1\]ip add 1.1.1.1 24 \[R2-GigabitEthernet0/0/1\]vlan 10 \[R2-vlan10\]int vlan 10 \[R2-Vlanif10\]ip add 192.168.3.1 24 \[R2-Vlanif10\]int e0/0/0 \[R2-Ethernet0/0/0\]port link-t acc \[R2-Ethernet0/0/0\]port def vlan 10 \[R2-Ethernet0/0/0\]quit \[R2\]ip route-static 192.168.1.0 24 172.16.1.1 preference 60 \[R2\]ip route-static 192.168.1.0 24 1.1.1.2 preference 70 \[R2\]ip route-static 192.168.2.0 24 1.1.1.2 preference 60 \[R2\]ip route-static 192.168.2.0 24 172.16.1.1 preference 70
R3：
<Huawei>sys
Huawei\]sys R3 \[R3\]int g0/0/0 \[R3-GigabitEthernet0/0/0\]ip add 10.10.1.2 24 \[R3-GigabitEthernet0/0/0\]int g0/0/1 \[R3-GigabitEthernet0/0/1\]ip add 1.1.1.2 24 \[R3-GigabitEthernet0/0/1\]vlan 10 \[R3-vlan10\]int vlan 10 \[R3-Vlanif10\]ip add 192.168.2.1 24 \[R3-Vlanif10\]int e0/0/0 \[R3-Ethernet0/0/0\]port link-t acc \[R3-Ethernet0/0/0\]port def vlan 10 \[R3-Ethernet0/0/0\]quit \[R3\]ip route-static 192.168.1.0 24 10.10.1.1 preference 60 \[R3\]ip route-static 192.168.1.0 24 1.1.1.1 preference 70 \[R3\]ip route-static 192.168.3.0 24 1.1.1.1 preference 60 \[R3\]ip route-static 192.168.3.0 24 10.10.1.1 preference 70
修改R1路径优先级
R1\]ip route-static 192.168.2.0 24 10.10.1.2 preference 80
