需求：实现20.0和30.0互通，并负载均衡按路径配置R2-R3路径R2ip route192.168.30.0255.255.255.0192.168.3.3去R3ip route192.168.2
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需求：实现20.0和30.0互通，并负载均衡
| 按路径配置 | ||||||||
| R2-R3路径 | R2 | ip route | 192.168.30.0 | 255.255.255.0 | 192.168.3.3 | 去 | ||
| R3 | ip route | 192.168.20.0 | 255.255.255.0 | 192.168.3.2 | 回 | |||
| R2-R1-R3路径 | R2 | ip route | 192.168.30.0 | 255.255.255.0 | 192.168.1.1 | 去 | ||
| R1 | ip route | 192.168.30.0 | 255.255.255.0 | 192.168.2.3 | 去 | |||
| R1 | ip route | 192.168.20.0 | 255.255.255.0 | 192.168.1.2 | 回 | |||
| R3 | ip route | 192.168.20.0 | 255.255.255.0 | 192.168.2.1 | 回 |
| 中心思想 | 在经过的路由器上里，配置20.0和30.0两段的路由 | |||||
| 站路由器角度，按网段配置 | 在R2上，配去30.0两条路由，从3.3和2.3口走 | R2 | ip route | 192.168.30.0 | 255.255.255.0 | 192.168.3.3 |
| ip route | 192.168.30.0 | 255.255.255.0 | 192.168.2.3 | |||
| 在R1上，配去30.0路由从2.3口走；配去20.0路由从1.2口走 | R1 | ip route | 192.168.30.0 | 255.255.255.0 | 192.168.2.3 | |
| ip route | 192.168.20.0 | 255.255.255.0 | 192.168.1.2 | |||
| 在R3上，配去20.0两条路由，从3.2和1.2口走 | R3 | ip route | 192.168.20.0 | 255.255.255.0 | 192.168.3.2 | |
| ip route | 192.168.20.0 | 255.255.255.0 | 192.168.1.2 |
配好后在R2上traceroute192.168.30.0，跟踪数据包走向，负载均衡
在此需求基础上再实现全网互通
| 2 | 全网互通 | 每个路由器配自己不知道的网段 | ||||||
| R2 | ip route | 192.168.2.0 | 255.255.255.0 | 192.168.1.1 | 全网互通 | |||
| R3 | ip route | 192.168.1.0 | 255.255.255.0 | 192.168.2.1 | 全网互通 |
无论在哪个路由器，都能ping通另2个路由器
