RIP v1：为有类别路由协议，不支持VLSM和CIDR
以广播的形式发送报文
不支持验证
RIP v2：为无类别路由协议，支持VLSM，支持路由聚合与CIDR
支持以广播或者组播（224.0.0.9）的形式发送报文
支持明文验证和MD5密文验证
RIP是距离矢量路由选择协议
RIP的基本概念：
定期更新 30S
邻居
广播更新
全路由表更新
RIP度量值为跳数
最大跳数为15跳，16跳为不可达
RIP更新时间
每隔30秒发送路由更新消息，UDP520端口
RIP路由更新消息
发送整个路由表信息
例题：
R1：
<Huawei>undo terminal monitor
Info: Current terminal monitor is off.
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R1
[R1]user-interface console 0
[R1-ui-console0]idle-timeout 0 0
[R1-ui-console0]quit
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 10.1.1.1 24
[R1-GigabitEthernet0/0/0]undo shut
Info: Interface GigabitEthernet0/0/0 is not shutdown.
[R1-GigabitEthernet0/0/0]quit
[R1]rip
[R1-rip-1]network 10.0.0.0
[R1-rip-1]quit
R2：
<Huawei>undo terminal monitor
Info: Current terminal monitor is off.
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R2
[R2]user-int
[R2]user-interface console 0
[R2-ui-console0]idle-timeout 0 0
[R2-ui-console0]quit
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 10.1.1.2 24
[R2-GigabitEthernet0/0/0]undo shut
Info: Interface GigabitEthernet0/0/0 is not shutdown.
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 172.16.1.2 24
[R2-GigabitEthernet0/0/1]undo shut
Info: Interface GigabitEthernet0/0/1 is not shutdown.
[R2-GigabitEthernet0/0/1]quit
[R2]rip
[R2-rip-1]network 10.0.0.0
[R2-rip-1]network 172.16.0.0
[R2-rip-1]quit
R3：
<Huawei>undo terminal monitor
Info: Current terminal monitor is off.
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R3
[R3]user-interface console 0
[R3-ui-console0]idle-timeout 0 0
[R3-ui-console0]quit
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 172.16.1.3 24
[R3-GigabitEthernet0/0/0]undo shut
Info: Interface GigabitEthernet0/0/0 is not shutdown.
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 32.1.1.3 24
[R3-GigabitEthernet0/0/1]undo shut
Info: Interface GigabitEthernet0/0/1 is not shutdown.
[R3-GigabitEthernet0/0/1]quit
[R3]rip
[R3-rip-1]network 172.16.0.0
[R3-rip-1]network 32.0.0.0
[R3-rip-1]quit
R4：
<Huawei>undo terminal monitor
Info: Current terminal monitor is off.
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R4
[R4]user-interface console 0
[R4-ui-console0]idle-timeout 0 0
[R4-ui-console0]quit
[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 32.1.1.4 24
[R4-GigabitEthernet0/0/0]undo shut
Info: Interface GigabitEthernet0/0/0 is not shutdown.
[R4-GigabitEthernet0/0/0]quit
[R4]rip
[R4-rip-1]network 32.0.0.0
[R4-rip-1]quit
什么是主类网络边界？
指的是两个不同的主类网络之间的路由网段
如图所示：
R2、R3就是跨越主类网络边界的路由器，R2连接了主类12网段和主类172网段，R3连接了主类12网段和主类172网段。
Rip
Version 2
Undo summary
Rip默认的版本是Version1，可认为修改Version2，关闭自动汇总功能