一、实验步骤：
1、在模拟器上拉出三台路由和两台PC，分别用线缆连接好并启动。
2、PC1连接R1的网段为192.168.1.0/24，网关为192.168.1.1，PC2连接R3的网段为192.168.4.0/ 24，网关为192.168.4.1。
3、R1连接R2的网段为：192.168.2.0/24，R2连接R3的网段为：192.168.3.0/24，各接口地址如 图所示。
4、用RIP协议来实现PC1和PC2互通。
二、配置命令：
R1
[Huawei]sysn R1
[R1]int g 0/0/2
[R1-GigabitEthernet0/0/2]ip add
[R1-GigabitEthernet0/0/2]ip address 192.168.1.1 24
[R1-GigabitEthernet0/0/2]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 192.168.2.1 24
[R1-GigabitEthernet0/0/0]q
[R1]rip
[R1-rip-1]vers
[R1-rip-1]version 2
[R1-rip-1]netwo
[R1-rip-1]network 192.168.1.0
[R1-rip-1]network 192.168.2.0
[R1-rip-1]q
R1]disp rip 1 r
[R1]disp rip 1 route
Route Flags : R - RIP
A - Aging, G - Garbage-collect
----------------------------------------------------------------------------
Peer 192.168.2.2 on GigabitEthernet0/0/0
Destination/Mask Nexthop Cost Tag Flags Sec
192.168.3.0/24 192.168.2.2 1 0 RA 2
192.168.4.0/24 192.168.2.2 2 0 RA 2
[R1]q
[R1]disp ip ro
[R1]disp ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 12 Routes : 12
Destination/Mask Proto Pre Cost Flags NextHop Interface
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
192.168.1.0/24 Direct 0 0 D 192.168.1.1 GigabitEthernet 0/0/2
192.168.1.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/2
192.168.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/2
192.168.2.0/24 Direct 0 0 D 192.168.2.1 GigabitEthernet 0/0/0
192.168.2.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/0
192.168.2.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/0
192.168.3.0/24 RIP 100 1 D 192.168.2.2 GigabitEthernet 0/0/0
192.168.4.0/24 RIP 100 2 D 192.168.2.2 GigabitEthernet 0/0/0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R1]
[R2]
[Huawei]sysn R2
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.2.2 24
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 192.168.3.1 24
[R2-GigabitEthernet0/0/1]q
[R2]rip
[R2-rip-1]ver
[R2-rip-1]vers
[R2-rip-1]version 2
[R2-rip-1]netwo
[R2-rip-1]network 192.168.2.0
[R2-rip-1]network 192.168.3.0
[R2-rip-1]q
[R2]disp rip 1 r
Route Flags : R - RIP
A - Aging, G - Garbage-collect
----------------------------------------------------------------------------
Peer 192.168.2.1 on GigabitEthernet0/0/0
Destination/Mask Nexthop Cost Tag Flags Sec
192.168.1.0/24 192.168.2.1 1 0 RA 35
Peer 192.168.3.2 on GigabitEthernet0/0/1
Destination/Mask Nexthop Cost Tag Flags Sec
192.168.4.0/24 192.168.3.2 1 0 RA 16
[R2]
[R2]disp ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 12 Routes : 12
Destination/Mask Proto Pre Cost Flags NextHop Interface
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
192.168.1.0/24 RIP 100 1 D 192.168.2.1 GigabitEthernet 0/0/0
192.168.2.0/24 Direct 0 0 D 192.168.2.2 GigabitEthernet 0/0/0
192.168.2.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/0
192.168.2.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/0
192.168.3.0/24 Direct 0 0 D 192.168.3.1 GigabitEthernet 0/0/1
192.168.3.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/1
192.168.3.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/1
192.168.4.0/24 RIP 100 1 D 192.168.3.2 GigabitEthernet 0/0/1
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R2]
R3
[Huawei]sysn R3
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.3.2 24
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 192.168.4.1 24
[R3-GigabitEthernet0/0/1]q
[R3]rip
[R3-rip-1]vers
[R3-rip-1]version 2
[R3-rip-1]netw
[R3-rip-1]network 192.168.3.0
[R3-rip-1]network 192.168.4.0
[R3-rip-1]q
[R3]disp rip 1 ro
Route Flags : R - RIP
A - Aging, G - Garbage-collect
----------------------------------------------------------------------------
Peer 192.168.3.1 on GigabitEthernet0/0/0
Destination/Mask Nexthop Cost Tag Flags Sec
192.168.2.0/24 192.168.3.1 1 0 RA 32
192.168.1.0/24 192.168.3.1 2 0 RA 32
[R3]
[R3]disp ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 12 Routes : 12
Destination/Mask Proto Pre Cost Flags NextHop Interface
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
192.168.1.0/24 RIP 100 2 D 192.168.3.1 GigabitEthernet 0/0/0
192.168.2.0/24 RIP 100 1 D 192.168.3.1 GigabitEthernet 0/0/0
192.168.3.0/24 Direct 0 0 D 192.168.3.2 GigabitEthernet 0/0/0
192.168.3.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/0
192.168.3.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/0
192.168.4.0/24 Direct 0 0 D 192.168.4.1 GigabitEthernet 0/0/1
192.168.4.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/1
192.168.4.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet 0/0/1
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R3]
总结：通过RIP协议来实现网络间的互通非常简单明了，不像静态路由那样一个一个的加，容易出错，动态路由只需要将网络的接口宣告到RIP里去，它会自动学习和接收邻居接口路由，在宣告接口时，一定要用主类网络，要用支持子网的第二个版本。