浮动路由:配置两条静态路由,链路最优的作为主路径,主路径出现故障,带宽较小的备用路由会顶替,保证网络不中断
第一步配置IP地址
R1:
undo terminal monitor
[Huawei] user-interface
console 0
[Huawei]idle-timeout 0 0
[Huawei]sysname R1
[R1]int LoopBack 0
[R1-LoopBack0]ip
address 172.16.1.1 24
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip
address 192.168.1.1 24
R2:
undo terminal monitor
[Huawei] user-interface console 0
[Huawei]idle-timeout 0 0
[Huawei]sysname R2
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip address
192.168.1.2 24
[R2]int g0/0/1
[R2-GigabitEthernet0/0/1]ip address 192.168.2.1
24
R3:
undo terminal monitor
[Huawei] user-interface console 0
[Huawei]idle-timeout 0 0
[Huawei]sysname R3
[R3]int LoopBack 0
[R3-LoopBack0]ip address 172.16.2.1 24
[R3]int g0/0/0
[R3-GigabitEthernet0/0/1]ip address 192.168.2.2
24
第二步添加静态路由:
R1:
[R1]ip route-static
192.168.2.0 24 192.168.1.2
[R1]ip route-static
172.16.2.0 24 192.168.1.2
R2:
[R2]ip route-static
172.16.1.0 24 192.168.1.1
[R2]ip route-static
172.16.2.0 24 192.168.2.2
R3:
[R3]ip route-static 192.168.1.0
24 192.168.2.1
[R3]ip route-static 172.16.1.0 24 192.168.2.1
默认路由
默认路由是静态路由的一种特殊方式,它属于静态路由的一种。
使用条件:只能使用在末梢网络中使用
R1:
[R1]ip route-static 192.168.2.0
24 192.168.1.2
[R1]ip route-static
172.16.2.0 24 192.168.1.2
可以将俩条路由合并成一条默认路由,减少路由条目
1先删除这俩条静态路由
[R1]undo ip route-static 172.16.2.0
255.255.255.0 192.168.1.2
[R1]undo ip route-static 192.168.2.0
255.255.255.0 192.168.1.2
2修改为默认路由
即:[R1]ip route-static 0.0.0.0 0.0.0.0 192.168.1.2
R3:
[R3]ip route-static 192.168.1.0
24 192.168.2.1
[R3]ip route-static 172.16.1.0 24 192.168.2.1
可以将俩条路由合并成一条默认路由,减少路由条目
1先删除这俩条静态路由
[R3]undo ip route-static
192.168.1.0 24 192.168.2.1
[R3]undo ip route-static 172.16.1.0 24
192.168.2.1
2修改为默认路由
即:[R3]ip route-static 0.0.0.0 0.0.0.0 192.168.2.1
浮动路由
[R1]int e0/0/0
[R1-Ethernet0/0/0]ip address 192.168.3.1 24
[R2]int e0/0/0
[R2-Ethernet0/0/0]ip address 192.162.3.2 24
[R1]ip route-static 0.0.0.0 0.0.0.0 192.168.3.2 preference 61
设置这条路由的优先级为61(静态路由优先级为60)所以链路正常时不会走这条路
[R2]ip route-static 0.0.0.0 0.0.0.0 192.168.3.1 preference 61
效果:
[R1]tracert
172.16.2.1
traceroute to
172.16.2.1(172.16.2.1), max hops: 30 ,packet length: 40,press CT
RL_C to break
1 192.168.1.2 30 ms 50 ms
30 ms
2 192.168.2.2 80 ms 80 ms 40 ms
当g0/0/0这条链路不正常时
[R1]tracert
172.16.2.1
traceroute to
172.16.2.1(172.16.2.1), max hops: 30 ,packet length: 40,press CT
RL_C to break
1 192.168.3.2 50 ms 30 ms
40 ms
2 192.168.2.2 70 ms 60 ms 60 ms