静态黑洞路由：
R1:
interface Ethernet0/0/0
ip address 13.1.1.1 255.255.255.0
#
interface LoopBack0
ip address 10.1.1.1 255.255.255.0
#
ip route-static 10.1.0.0 255.255.0.0 13.1.1.3
ip route-static 34.1.1.0 255.255.255.0 13.1.1.3
R2:
interface Ethernet0/0/0
ip address 23.1.1.2 255.255.255.0
#
interface LoopBack0
ip address 10.1.2.1 255.255.255.0
#
ip route-static 10.1.0.0 255.255.0.0 23.1.1.1
ip route-static 34.1.1.0 255.255.255.0 23.1.1.1
R3:
interface Ethernet0/0/1
ip address 34.1.1.3 255.255.255.0
#
interface GigabitEthernet0/0/0
ip address 23.1.1.3 255.255.255.0
#
ip route-static 0.0.0.0 0.0.0.0 34.1.1.4
ip route-static 10.1.0.0 255.255.255.0 34.1.1.4
ip route-static 10.1.1.0 255.255.255.0 13.1.1.1
ip route-static 10.1.2.0 255.255.255.0 23.1.1.2
R4:
interface Ethernet0/0/0
ip address 34.1.1.4 255.255.255.0
#
interface LoopBack0
ip address 10.1.0.1 255.255.0.0
#
ip route-static 10.1.1.0 255.255.255.0 34.1.1.3
ip route-static 10.1.2.0 255.255.255.0 34.1.1.3
ip route-static 13.1.1.0 255.255.255.0 34.1.1.3
ip route-static 23.1.1.0 255.255.255.0 34.1.1.3
[r3-GigabitEthernet0/0/0]shutdown
<r4>tracert -a 10.1.0.1 10.1.2.1
[r3]ip route-static 10.1.0.0 16 NULL 0
<r4>tracert -a 10.1.0.1 10.1.2.1
浮动路由;
关键配置
[R1]ip route-static 192.168.2.0 24 192.168.4.2 preference 100
[Huawei]ip route-static 192.168.1.0 24 192.168.4.1 preference 100