1.例图
2.要求：
1.全网用192.168.1.0/24进行IP地址分配
2.R7作为DHCP服务器为PC分配IP地址
3.路由上均具备2个回环地址
4.R6与R7之间正常走1000M，备份走100M
5.全网尽量负载均衡，
6.减少路由表数量，避免产生环路
7.全网可达
3.分析
1.先将192 192.168.1.0/24 划分为六个网段，再将192 .168.1.0/27划分为七个网段
2.网段分给各个端口，每个路由设置环回
3.按照要求配置缺省、空接口防环等其他配置
4.配置路由信息
4.1配置环回和各个端口IP
例如配置R7
[Huawei]interface GigabitEthernet 0/0/0
[Huawei-GigabitEthernet0/0/0]ip address 192.168.1.22 30
[Huawei-GigabitEthernet0/0/0]q
[Huawei]interface GigabitEthernet 0/0/2
[Huawei-GigabitEthernet0/0/2]ip address 192.168.1.18 30
[Huawei-GigabitEthernet0/0/2]q
[Huawei]interface loopback 1
[Huawei-LoopBack1]ip address 192.168.1.161 28
[Huawei-LoopBack1]q
[Huawei]interface loopback 2
[Huawei-LoopBack2]ip address 192.168.1.177
4.2配置缺省、空接口防环、静态路由
[Huawei]ip route-static 192.168.1.160 255.255.255.224 NULL0
[Huawei]ip route-static 0.0.0.0 0.0.0.0 56.1.1.2
[Huawei]ip route-static 192.168.1.0 27 192.168.1.17
[Huawei]ip route-static 192.168.1.0 27 192.168.1.21 preference 61
[Huawei]ip route-static 192.168.1.32 255.255.255.224 192.168.1.17
[Huawei]ip route-static 192.168.1.32 255.255.255.224 192.168.1.21 preference 61
[Huawei]ip route-static 192.168.1.64 255.255.255.192 192.168.1.17
[Huawei]ip route-static 192.168.1.64 255.255.255.192 192.168.1.21 preference 61
[Huawei]ip route-static 192.168.1.128 255.255.255.224 192.168.1.17
[Huawei]ip route-static 192.168.1.128 255.255.255.224 192.168.1.21 preference 61
4.3 R7与R4配置浮动静态电路（改优先级）
[Huawei]ip route-static 192.168.1.0 27 192.168.1.21 preference 61
[Huawei]ip route-static 192.168.1.32 255.255.255.224 192.168.1.17
[Huawei]ip route-static 192.168.1.32 255.255.255.224 192.168.1.21 preference 61
[Huawei]ip route-static 192.168.1.64 255.255.255.192 192.168.1.17
[Huawei]ip route-static 192.168.1.64 255.255.255.192 192.168.1.21 preference 61
[Huawei]ip route-static 192.168.1.128 255.255.255.224 192.168.1.17
[Huawei]ip route-static 192.168.1.128 255.255.255.224 192.168.1.21 preference 61
关闭一个接口R70/0/0
[Huawei]interface GigabitEthernet 0/0/2
[Huawei-GigabitEthernet0/0/2]shutdown
Aug 15 2022 20:52:34-08:00 Huawei %%01IFPDT/4/IF_STATE(l)[0]:Interface GigabitEt
hernet0/0/2 has turned into DOWN state.
[Huawei-GigabitEthernet0/0/2]display ip routing-table
Route Flags: R - relay, D - download to fib
4.4全网可达
4.5 DHCP自动获取IP
