RIP协议分为版本1和版本2，均具备以下特征：
1.是距离向量路由协议
2.使用跳数(Hop Count)作为度量值
3.默认路由更新周期为30秒
4.管理距离(AD)为120
5.支持触发更新
6.最大跳数为15跳
7.支持等价路径，默认4跳，最大6条
8.使用UDP520端口进行路由更新
RIPv1：
1.在路由更新过程中不携带子网信息
2.不提供认证
3.不支持VLSM和CIDR
4.采用广播更新
5.有类(Classful)路由协议
RIPv2：
1.在路由更新过程中携带子网信息
2.提供明文和MD5认证
3.支持VLSM和CIDR
4.采用组播(224.0.0.9)更新
5.无类(Classless)路由协议
1.RIPv1
2.RIPv2
3.RIPv1与RIPv2兼容
4.在接口上禁止运行RIP
5.RIPv2单播更新
6.RIPv2自动汇总
7.RIPv2手动汇总
8.RIPv2产生默认路由
9.RIPv2明文认证
10.RIPv2 MD5认证
11.RIP过滤路由
enable
conf t
no ip do lo
enable pass cisco
line con 0
logg sync
exec-t 0 0
line vty 0 4
pass cisco
logg sync
exit
host 
1.RIP版本1
-------------------------------------------------------------
R1:
int f0/0
ip add 12.1.1.1 255.255.255.0
no shut
exit
int l0
ip add 11.1.1.1 255.255.255.0
no shut
exit
router rip
version 1
network 11.0.0.0
network 12.0.0.0
R2:
int f0/0
ip add 12.1.1.2 255.255.255.0
no shut
exit
int f1/0
ip add 23.1.1.2 255.255.255.0
no shut
exit
int l0
ip add 22.1.1.1 255.255.255.0
no shut
exit
router rip
version 1
network 12.0.0.0
network 23.0.0.0
network 22.0.0.0
R3:
int f0/0
ip add 23.1.1.3 255.255.255.0
no shut
exit
int l0
ip add 33.1.1.1 255.255.255.0
no shut
exit
router rip
version 1
network 33.0.0.0
network 23.0.0.0
R1:
show ip route
2.RIP版本2
----------------------------------------------
R1:
router rip
version 2
no auto-summary
R2:
router rip
version 2
no auto-summary
R3:
router rip
version 2
no auto-summary
R1:
clear ip route *
show ip route
3.RIP版本1与版本2兼容
-------------------------------------------------
R3:
router rip
version 1
show ip route
R2:
show ip route
int f1/0
ip rip send version 1
ip rip receive version 1
4.在接口禁止运行RIP
-----------------------------------------------
R2:
int f1/0
no ip rip send version 1
no ip rip receive version 1
R3:
router rip
version 2
exit
R1:
router rip
passive-interface f0/0
R2/R1:
clear ip route *
show ip route
5.RIPv2单播更新
-------------------------------------------------------
R2:
router rip
passive-interface f0/0
exit
R1:
router rip
neighbor 12.1.1.2
exit
R2:
router rip
neighbor 12.1.1.1
exit
R1:
show ip route
6.RIPv2自动汇总
-----------------------------------------------------------
R1:
router rip
no passive-interface f0/0
no neighbor 12.1.1.2
auto-summary
exit
R2:
router rip
no passive-interface f0/0
no neighbor 12.1.1.1
auto-summary
exit
R3:
router rip
auto-summary
exit
7.RIPv2手动汇总
-----------------------------------------------------
R1:
router rip
no auto-summary
exit
R2:
router rip
no auto-summary
exit
R3:
router rip
no auto-summary
exit
R2:
int f0/0
ip summary-add rip 1.1.0.0 255.255.0.0
exit
8.RIPv2产生默认路由
-----------------------------------------------------
R3:
router rip
default-information originate
exit
router rip
no default-information originate
exit
int l1
ip add 10.1.1.1 255.0.0.0
exit
ip default-network 10.0.0.0
no ip default-network 10.0.0.0
int l1
shutdown
exit
ip route 0.0.0.0 0.0.0.0 null 0
router rip
network 0.0.0.0
exit
router rip
no network 0.0.0.0
exit
router rip
redistribute static
exit
R1:
clear ip route *
show ip route rip
9.RIPv2明文认证
----------------------------------------------------------
R1:
key chain yeslab
key 1
key-string cisco
exit
exit
int f0/0
ip rip authentication mode text
ip rip authentication key-chain yeslab
exit
R2:
key chain yeslab
key 1
key-string cisco
exit
exit
int f0/0
ip rip authentication mode text
ip rip authentication key-chain yeslab
exit
10.RIPv2 MD5认证
-----------------------------------------------------------
R2:
key chain yeslab2
key 1
key-string yeslab
exit
exit
int f1/0
ip rip authentication mode md5
ip rip authentication key-chain yeslab2
exit
R3:
key chain yeslab3
key 1
key-string yeslab
exit
exit
int f0/0
ip rip authentication mode md5
ip rip authentication key-chain yeslab3
exit
11.RIP过滤路由
R3:
access-list 10 deny 11.1.1.0
access-list 10 permit any
rotuer rip
distribute-list 10 in
exit
