RIP配置详解
作者：尹正杰
版权声明：原创作品，谢绝转载！否则将追究法律责任。
一.RIP协议概述
1.RIP是Routing Information Protocol(路由信息协议)的简称；
2.RIP是一种基于距离矢量(Distance-Vector)算法的路由协议；
3.RIP协议适用与中小型网络，分为RIPv1和RIPv2；
4.RIP支持水平分割，毒性逆转和出发更新等工作机制，防止路由环路；
5.RIP协议基于UDP传输，端口号是520.
二.RIP工作原理
1.RIP路由表的初始化
2.RIP路由表的更新
3.路由表的维护
RIP路由信息维护是由定时器完成的：
update定时器：定义了发送路由更新的时间间隔 30s
timeout定时器：定义了路由老化时间，如果在老化时间内没有收到关于某条路由的更新报文，则该条路由的度量值会被设置的无穷大（16），并且从IP路由表中撤销，定时器默认值是180s.
Garbage-Collect定时器：定义了一条路由从度量值变为16开始，直到它从路由表里面被彻底删除所经过的时间，如果Garbage-Collect超时，该路由仍没有得到更新，则该路由将被车垫删除，默认值是120s.
总结：RIP路由如果没有更新，300s后会被彻底删除，180s内如果没有更新，丢到回收站，180-300内还没有更新，彻底删除。
4.拓扑变化在网络中的扩散
三.RIP的防环路机制
1.路由毒化
所谓网络毒化（route poisoning）就是路由器主动把路由表中发生故障的路由项以度量值无穷大（16）的形式通告给RIP邻居，以使邻居能够及时得知网络发生故障。
比如：当与RTC相连接的路由器10.4.0.0网络发生故障，他就会告诉他最近的路由器说这这个网段不好使了，并将其设置为毒性路由，RTB也会告知他与它相近的路由器RTA,最终大家都知道后会将10.4.0.0网段的标记为“inf”，最终将删除这条路由。
2.水平分割
路由器从某个接口学到的路由不会将来路由发送给发给他的路由器，比如说RTB开始仅仅只有10.2.0.0和10.3.0.0网段，通过RIP协议从S0/0口学习到了10.1.0.0的路由，他就把送S0/0口学到的10.1.0.0的路由发送给RTA，同理，它也可以通过s1/0口学习到10.4.0.0网段的路由，学到后，将路由保存到自己的路由表中，不会讲10.4.0.0通过s1/0告知给RTC，但是他会通过s1/0告诉到他学习到的路由和自身的路由，也就是刚刚学习到的10.1.0.0和自身的路由10.2.0.0与10.3.0.0通过s1/0口告知给RTC.
总结起来就一句话：路由器中某接口发送出去的路由，不会再从该接口接收。
3.毒性逆转
还是就着上面的例子，RTB开始的路由是10.2.0.0和10.3.0.0，RTB会通过RIP协议学习到相邻路由中不同网段的路由信息，当RTB学习到RTC的路由信息10.4.0.0网段的时候，当RTB要发送他自己的路由信息时，会自动将之前在s1/0口学习到的10.4.0.0的度量值为16，这就意味着RTB是不可能到达RTC的（RIP最大跳数是16）
注意：毒性逆转可以超越水平分割，不受水平分割的影响。
4.定义最大跳数：
默认15跳，16跳不可达，RIP机制本身定义的。
5.抑制时间
1>.抑制时间和路由毒化结合使用，能够在一定程度上避免路由环路产生。
2>.抑制时间规定，当一条路由的度量值变为无穷大（16）时，该路由进入抑制状态。在被抑制状态，只有来自同一邻居且度量值小鱼无穷大（16）的路由更新才会被路由器接受，取代不可达路由。
timeout:180s
回收站清空时间：120s
如下图：当RTC路由器10.4.0.0网段发生故障的时候，他就会告知RTB说网络不可达，这个时候RTB就会把RTC发来关于10.4.0.0网段的路由器的度量值变为“inf”，与此同时会产生一个抑制时间，在这个抑制时间内，如果接受到了其他路由（RTA）关于10.4.0.0网段的路由信息，RTB不会去理会他，他会自动忽略RTA关于10.4.0.0网段的路由信息，因为在这个抑制时间内他只会等待RTC的路由更新，如果在这个抑制时间内，接受到关于10.4.0.0的路由的度量值小鱼16，那么RTB久会恢复RTB到RTC的路由，将不可达(inf)的cost值【度量值】更新，如果在这个时间内，RTC始终没有发送10.4.0.0的路由给RTB，那么过来抑制时间就会自动接受其他的路由关于10.4.0.0的路由信息，也就是说，过了抑制时间的话RTA发送路由信息10.4.0.0给RTB时，RTB会接受该信息哟~并更新自己的路由表。
6.触发更新
触发更新是指，当路由表中路由信息差生变化是，路由器不必等到更新周期到来，而立即发送路由更新给相邻路由器。路由更新中包含网络不可达信息迅速传播全网。让全网知道该路由信息时不可达的。
多路径网络环路避免操作示例
四.RIPv1与RIPv2的介绍
RIPv1的缺点
RIPv2的改进
五.配置RIP实验
实验要求：
需要配置北京的客户端能够访问菲律宾的服务器，通过RIP协议使其互通。拓扑图如下：
配置过程如下：
注意:由于我用的是ENSP模拟器，这是一款华为的模拟器，所以命令和H3C在配置上是有点区别的，但是在配置RIP中的区别并不大，主要是在宣告自己路由的时候回有点差异，我在配置完毕后会有关于配置H3C设备是应该注意的地方。
“北京核心交换机”配置如下：
1 “北京核心交换机”配置如下： 2 3 [Huawei]sysname core 4 [core]interface Ethernet 0/0/10 5 [core-Ethernet0/0/10]port link-type trunk 6 [core-Ethernet0/0/10]quit
“北京网关地址”配置如下：
1 “北京网关地址”配置如下： 2 [Huawei]sysname beijing 3 [beijing]interface Ethernet 0/0/0 4 [beijing-Ethernet0/0/0]ip address 172.30.1.254 24 5 [beijing-Ethernet0/0/0]quit 6 [beijing]interface GigabitEthernet 0/0/0 7 [beijing-GigabitEthernet0/0/0]ip address 36.110.101.138 24 8 [beijing-GigabitEthernet0/0/0]undo shutdown 9 [beijing-GigabitEthernet0/0/0]quit 10 [beijing]display ip routing-table 11 Route Flags: R - relay, D - download to fib 12 ------------------------------------------------------------- 13 14 ----------------- 15 Routing Tables: Public 16 Destinations : 6 Routes : 6 17 18 Destination/Mask Proto Pre Cost Flags NextHop 19 20 Interface 21 22 36.110.101.0/24 Direct 0 0 D 23 24 36.110.101.138 GigabitEthernet0/0/0 25 36.110.101.138/32 Direct 0 0 D 127.0.0.1 26 27 GigabitEthernet0/0/0 28 127.0.0.0/8 Direct 0 0 D 127.0.0.1 29 30 InLoopBack0 31 127.0.0.1/32 Direct 0 0 D 127.0.0.1 32 33 InLoopBack0 34 172.30.1.0/24 Direct 0 0 D 172.30.1.254 35 36 Ethernet0/0/0 37 172.30.1.254/32 Direct 0 0 D 127.0.0.1 38 39 Ethernet0/0/0 40 [beijing] 41 [beijing]display ip interface brief 42 *down: administratively down 43 !down: FIB overload down 44 ^down: standby 45 (l): loopback 46 (s): spoofing 47 (d): Dampening Suppressed 48 The number of interface that is UP in Physical is 3 49 The number of interface that is DOWN in Physical is 8 50 The number of interface that is UP in Protocol is 3 51 The number of interface that is DOWN in Protocol is 8 52 53 Interface IP Address/Mask 54 55 Physical Protocol 56 Ethernet0/0/0 172.30.1.254/24 up 57 58 up 59 Ethernet0/0/1 unassigned down 60 61 down 62 GigabitEthernet0/0/0 36.110.101.138/24 up 63 64 up 65 GigabitEthernet0/0/1 unassigned down 66 67 down 68 GigabitEthernet0/0/2 unassigned down 69 70 down 71 GigabitEthernet0/0/3 unassigned down 72 73 down 74 NULL0 unassigned up 75 76 up(s) 77 Serial0/0/0 unassigned down 78 79 down 80 Serial0/0/1 unassigned down 81 82 down 83 Serial0/0/2 unassigned down 84 85 down 86 Serial0/0/3 unassigned down 87 88 down 89 [beijing] 90 [beijing]rip #启动RIP功能 91 [beijing-rip-1]version 2 #指定RIP版本 92 [beijing-rip-1]undo summary #关闭自动汇总，如果开启的话，他会默认把一些子网汇聚成一个共同的网络。 93 [beijing-rip-1]network 172.30.0.0 #宣告所拥有的路由 94 [beijing-rip-1]network 36.0.0.0
“上海骨干网”配置如下：
1 “上海骨干网”配置如下： 2 [Huawei]sysname shanghai 3 [shanghai]interface GigabitEthernet 0/0/0 4 [shanghai-GigabitEthernet0/0/0]ip address 36.110.101.139 24 5 [shanghai-GigabitEthernet0/0/0]undo shutdown 6 [shanghai-GigabitEthernet0/0/0]quit 7 [shanghai]interface GigabitEthernet 0/0/1 8 [shanghai-GigabitEthernet0/0/1]ip address 180.168.255.118 24 9 [shanghai-GigabitEthernet0/0/1]undo shutdown 10 [shanghai-GigabitEthernet0/0/1]quit 11 [shanghai]rip 12 [shanghai-rip-1]version 2 13 [shanghai-rip-1]undo summary 14 [shanghai-rip-1]network 36.0.0.0 15 [shanghai-rip-1]network 180.168.0.0 16 [shanghai-rip-1]quit
“香港骨干网”配置如下：
1 [Huawei]sysname hongkong 2 [hongkong]interface GigabitEthernet 0/0/1 3 [hongkong-GigabitEthernet0/0/1]ip address 180.168.255.119 24 4 [hongkong-GigabitEthernet0/0/1]undo shutdown 5 [hongkong-GigabitEthernet0/0/1]quit 6 [hongkong]interface GigabitEthernet 0/0/0 7 [hongkong-GigabitEthernet0/0/0]ip address 202.14.67.4 24 8 [hongkong-GigabitEthernet0/0/0]undo shutdown 9 [hongkong-GigabitEthernet0/0/0]quit 10 [hongkong]rip 11 [hongkong-rip-1]version 2 12 [hongkong-rip-1]undo summary 13 [hongkong-rip-1]network 180.168.0.0 14 [hongkong-rip-1]network 202.14.67.0 15 [hongkong-rip-1]quit
“海南岛骨干网”配置如下：
1 [huawei]sysname hainan 2 [hainan]interface GigabitEthernet 0/0/0 3 [hainan-GigabitEthernet0/0/0]ip address 202.14.67.5 24 4 [hainan-GigabitEthernet0/0/0]undo shutdown 5 [hainan-GigabitEthernet0/0/0]quit 6 [hainan]interface GigabitEthernet 0/0/1 7 [hainan-GigabitEthernet0/0/1]ip address 221.11.132.21 24 8 [hainan-GigabitEthernet0/0/1]undo shutdown 9 [hainan-GigabitEthernet0/0/1]quit 10 [hainan]rip 11 [hainan-rip-1]version 2 12 [hainan-rip-1]undo summary 13 [hainan-rip-1]network 202.14.67.0 14 [hainan-rip-1]network 221.11.132.0 15 [hainan-rip-1]quit
“菲律宾路由器”配置如下：
1 [Huawei]sysname feilvbin 2 [feilvbin]interface GigabitEthernet0/0/1 3 [feilvbin-GigabitEthernet0/0/1]ip address 221.11.132.22 24 4 [feilvbin-GigabitEthernet0/0/1]undo shutdown 5 [feilvbin-GigabitEthernet0/0/1]quit 6 [feilvbin]interface Ethernet 0/0/0 7 [feilvbin-Ethernet0/0/0]ip address 192.168.1.254 24 8 [feilvbin-Ethernet0/0/0]undo shutdown 9 [feilvbin-Ethernet0/0/0]quit 10 [feilvbin]rip 11 [feilvbin-rip-1]version 2 12 [feilvbin-rip-1]undo summary 13 [feilvbin-rip-1]network 221.11.132.0 14 [feilvbin-rip-1]network 192.168.1.0 15 [feilvbin-rip-1]quit
“菲律宾核心交换机”配置如下： [Huawei]sysname core [core]interface Ethernet 0/0/10 [core-Ethernet0/0/10]port link-type trunk [core-Ethernet0/0/10]quit
注意，在配置RIP的时候华为交换机在宣告自己的地址的时候是宣告该接口的所属类的地址， 换句话说，也就是华为在宣告的时候，宣告的是以其所属IP类别进行宣告的，比如：
172.30.1.1宣告为172.30.0.0；
192.168.1.1（默认是C类IP）宣告为192.168.1.0；
10.10.10.1（默认是A类IP）宣告为10.0.0.0
但是H3C则不是，H3C直接需要你将每个接口的IP 直接宣告给邻居路由，比如：
172.30.1.1宣告为：172.30.1.1
192.168.1.1宣告为：192.168.1.1
所以我们配置各个厂商类别的时候要注意哟~
配置好上面的服务之后，我们需要进行测试：
查看北京路由获取的路由表信息：
1display ip routing-table 2 Route Flags: R - relay, D - download to fib 3 ------------------------------------------------------------------------------ 4 Routing Tables: Public 5 Destinations : 10 Routes : 10 6 7 Destination/Mask Proto Pre Cost Flags NextHop Interface 8 9 36.110.101.0/24 Direct 0 0 D 36.110.101.138 GigabitEthernet0 10 /0/0 11 36.110.101.138/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0 12 /0/0 13 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 14 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0 15 172.30.1.0/24 Direct 0 0 D 172.30.1.254 Ethernet0/0/0 16 172.30.1.254/32 Direct 0 0 D 127.0.0.1 Ethernet0/0/0 17 180.168.255.0/24 RIP 100 1 D 36.110.101.139 GigabitEthernet0/0/0 18 192.168.1.0/24 RIP 100 4 D 36.110.101.139 GigabitEthernet0/0/0 19 202.14.67.0/24 RIP 100 2 D 36.110.101.139 GigabitEthernet0/0/0 20 221.11.132.0/24 RIP 100 3 D 36.110.101.139 GigabitEthernet0/0/0 21
“北京客户端”测试结果如下：
1 PC>ipconfig 2 3 Link local IPv6 address...........: fe80::5689:98ff:fe4c:1e69 4 IPv6 address......................: :: / 128 5 IPv6 gateway......................: :: 6 IPv4 address......................: 172.30.1.1 7 Subnet mask.......................: 255.255.255.0 8 Gateway...........................: 172.30.1.254 9 Physical address..................: 54-89-98-4C-1E-69 10 DNS server........................: 11 12 PC>ping 192.168.1.254 13 14 Ping 192.168.1.254: 32 data bytes, Press Ctrl_C to break 15 From 192.168.1.254: bytes=32 seq=1 ttl=251 time=125 ms 16 From 192.168.1.254: bytes=32 seq=2 ttl=251 time=110 ms 17 From 192.168.1.254: bytes=32 seq=3 ttl=251 time=140 ms 18 From 192.168.1.254: bytes=32 seq=4 ttl=251 time=141 ms 19 From 192.168.1.254: bytes=32 seq=5 ttl=251 time=109 ms 20 21 --- 192.168.1.254 ping statistics --- 22 5 packet(s) transmitted 23 5 packet(s) received 24 0.00% packet loss 25 round-trip min/avg/max = 109/125/141 ms 26 27 PC>ping 192.168.1.1 28 29 Ping 192.168.1.1: 32 data bytes, Press Ctrl_C to break 30 From 192.168.1.1: bytes=32 seq=1 ttl=123 time=156 ms 31 From 192.168.1.1: bytes=32 seq=2 ttl=123 time=156 ms 32 From 192.168.1.1: bytes=32 seq=3 ttl=123 time=156 ms 33 From 192.168.1.1: bytes=32 seq=4 ttl=123 time=125 ms 34 From 192.168.1.1: bytes=32 seq=5 ttl=123 time=141 ms 35 36 --- 192.168.1.1 ping statistics --- 37 5 packet(s) transmitted 38 5 packet(s) received 39 0.00% packet loss 40 round-trip min/avg/max = 125/146/156 ms 41 42 PC>
六.RIP防环实战演示
1.开启水平分割
接口默认是开启水平分割的，我们直接查看即可：
需要等待几秒张就会有包的接受和发送的信息：
12 Apr 14 2017 12:53:38.260.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 3 onse from 36.110.101.139 on GigabitEthernet0/0/0 4 Apr 14 2017 12:53:38.260.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 5 Cmd response, Length 84 6 Apr 14 2017 12:53:38.260.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 7 24, Nexthop 0.0.0.0, Cost 1, Tag 0 8 Apr 14 2017 12:53:38.260.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 9 , Nexthop 0.0.0.0, Cost 4, Tag 0 10 Apr 14 2017 12:53:38.260.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 11 , Nexthop 0.0.0.0, Cost 2, Tag 0 12 Apr 14 2017 12:53:38.260.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 13 4, Nexthop 0.0.0.0, Cost 3, Tag 0 14 Apr 14 2017 12:53:40.320.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 15 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 16 Apr 14 2017 12:53:40.320.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 17 Cmd response, Length 124 18 Apr 14 2017 12:53:40.320.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 19 4, Nexthop 0.0.0.0, Cost 1, Tag 0 20 Apr 14 2017 12:53:40.320.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 21 Nexthop 0.0.0.0, Cost 1, Tag 0 22 Apr 14 2017 12:53:40.320.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 23 24, Nexthop 0.0.0.0, Cost 2, Tag 0 24 Apr 14 2017 12:53:40.320.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 25 , Nexthop 0.0.0.0, Cost 5, Tag 0 26 Apr 14 2017 12:53:40.320.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 27 , Nexthop 0.0.0.0, Cost 3, Tag 0 28 Apr 14 2017 12:53:40.320.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 29 4, Nexthop 0.0.0.0, Cost 4, Tag 0 30 Apr 14 2017 12:53:42.280.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 31 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 32 Apr 14 2017 12:53:42.280.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 33 Cmd response, Length 24 34 Apr 14 2017 12:53:42.280.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 35 Nexthop 0.0.0.0, Cost 1, Tag 0 36 Apr 14 2017 12:54:09.450.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 37 onse from 36.110.101.139 on GigabitEthernet0/0/0 38 Apr 14 2017 12:54:09.450.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 39 Cmd response, Length 84 40 Apr 14 2017 12:54:09.450.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 41 24, Nexthop 0.0.0.0, Cost 1, Tag 0 42 Apr 14 2017 12:54:09.450.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 43 , Nexthop 0.0.0.0, Cost 4, Tag 0 44 Apr 14 2017 12:54:09.450.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 45 , Nexthop 0.0.0.0, Cost 2, Tag 0 46 Apr 14 2017 12:54:09.450.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 47 4, Nexthop 0.0.0.0, Cost 3, Tag 0 48 Apr 14 2017 12:54:10.400.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 49 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 50 Apr 14 2017 12:54:10.400.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 51 Cmd response, Length 124 52 Apr 14 2017 12:54:10.400.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 53 4, Nexthop 0.0.0.0, Cost 1, Tag 0 54 Apr 14 2017 12:54:10.400.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 55 Nexthop 0.0.0.0, Cost 1, Tag 0 56 Apr 14 2017 12:54:10.400.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 57 24, Nexthop 0.0.0.0, Cost 2, Tag 0 58 Apr 14 2017 12:54:10.400.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 59 , Nexthop 0.0.0.0, Cost 5, Tag 0 60 Apr 14 2017 12:54:10.400.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 61 , Nexthop 0.0.0.0, Cost 3, Tag 0 62 Apr 14 2017 12:54:10.400.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 63 4, Nexthop 0.0.0.0, Cost 4, Tag 0 64 Apr 14 2017 12:54:16.400.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 65 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 66 Apr 14 2017 12:54:16.400.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 67 Cmd response, Length 24 68 Apr 14 2017 12:54:16.400.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 69 Nexthop 0.0.0.0, Cost 1, Tag 0 70 Apr 14 2017 12:54:38.560.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 71 onse from 36.110.101.139 on GigabitEthernet0/0/0 72 Apr 14 2017 12:54:38.560.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 73 Cmd response, Length 84 74 Apr 14 2017 12:54:38.560.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 75 24, Nexthop 0.0.0.0, Cost 1, Tag 0 76 Apr 14 2017 12:54:38.560.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 77 , Nexthop 0.0.0.0, Cost 4, Tag 0 78 Apr 14 2017 12:54:38.560.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 79 , Nexthop 0.0.0.0, Cost 2, Tag 0 80 Apr 14 2017 12:54:38.560.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 81 4, Nexthop 0.0.0.0, Cost 3, Tag 0 82 Apr 14 2017 12:54:43.540.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 83 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 84 Apr 14 2017 12:54:43.540.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 85 Cmd response, Length 24 86 Apr 14 2017 12:54:43.540.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 87 Nexthop 0.0.0.0, Cost 1, Tag 0 88 Apr 14 2017 12:54:45.510.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 89 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 90 Apr 14 2017 12:54:45.510.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 91 Cmd response, Length 124 92 Apr 14 2017 12:54:45.510.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 93 4, Nexthop 0.0.0.0, Cost 1, Tag 0 94 Apr 14 2017 12:54:45.510.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 95 Nexthop 0.0.0.0, Cost 1, Tag 0 96 Apr 14 2017 12:54:45.510.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 97 24, Nexthop 0.0.0.0, Cost 2, Tag 0 98 Apr 14 2017 12:54:45.510.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 99 , Nexthop 0.0.0.0, Cost 5, Tag 0 100 Apr 14 2017 12:54:45.510.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 101 , Nexthop 0.0.0.0, Cost 3, Tag 0 102 Apr 14 2017 12:54:45.510.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2
如果你要关闭水平分割的话：
[beijing]interface GigabitEthernet 0/0/0
[beijing-GigabitEthernet0/0/0]undo rip split-horizon
1terminal debugging 2 Info: Current terminal debugging is on. 3 debugging rip 1 packet 4 5 Apr 14 2017 13:00:08.570.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 6 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 7 Apr 14 2017 13:00:08.570.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 8 Cmd response, Length 124 9 Apr 14 2017 13:00:08.570.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 10 4, Nexthop 0.0.0.0, Cost 1, Tag 0 11 Apr 14 2017 13:00:08.570.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 12 Nexthop 0.0.0.0, Cost 1, Tag 0 13 Apr 14 2017 13:00:08.570.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 14 24, Nexthop 0.0.0.0, Cost 2, Tag 0 15 Apr 14 2017 13:00:08.570.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 16 , Nexthop 0.0.0.0, Cost 5, Tag 0 17 Apr 14 2017 13:00:08.570.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 18 , Nexthop 0.0.0.0, Cost 3, Tag 0 19 Apr 14 2017 13:00:08.570.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 20 4, Nexthop 0.0.0.0, Cost 4, Tag 0 21 Apr 14 2017 13:00:12.810.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 22 onse from 36.110.101.139 on GigabitEthernet0/0/0 23 Apr 14 2017 13:00:12.810.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 24 Cmd response, Length 84 25 Apr 14 2017 13:00:12.810.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 26 24, Nexthop 0.0.0.0, Cost 1, Tag 0 27 Apr 14 2017 13:00:12.810.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 28 , Nexthop 0.0.0.0, Cost 4, Tag 0 29 Apr 14 2017 13:00:12.810.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 30 , Nexthop 0.0.0.0, Cost 2, Tag 0 31 Apr 14 2017 13:00:12.810.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 32 4, Nexthop 0.0.0.0, Cost 3, Tag 0 33 Apr 14 2017 13:00:29.650.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 34 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 35 Apr 14 2017 13:00:29.650.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 36 Cmd response, Length 124 37 Apr 14 2017 13:00:29.650.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 38 4, Nexthop 0.0.0.0, Cost 1, Tag 0 39 Apr 14 2017 13:00:29.650.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 40 Nexthop 0.0.0.0, Cost 1, Tag 0 41 Apr 14 2017 13:00:29.650.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 42 24, Nexthop 36.110.101.139, Cost 2, Tag 0 43 Apr 14 2017 13:00:29.650.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 44 , Nexthop 36.110.101.139, Cost 5, Tag 0 45 Apr 14 2017 13:00:29.650.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 46 , Nexthop 36.110.101.139, Cost 3, Tag 0 47 Apr 14 2017 13:00:29.650.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 48 4, Nexthop 36.110.101.139, Cost 4, Tag 0 49 Apr 14 2017 13:00:40.700.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 50 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 51 Apr 14 2017 13:00:40.700.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 52 Cmd response, Length 124 53 Apr 14 2017 13:00:40.700.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 54 4, Nexthop 0.0.0.0, Cost 1, Tag 0 55 Apr 14 2017 13:00:40.700.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 56 Nexthop 0.0.0.0, Cost 1, Tag 0 57 Apr 14 2017 13:00:40.700.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 58 24, Nexthop 0.0.0.0, Cost 2, Tag 0 59 Apr 14 2017 13:00:40.700.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 60 , Nexthop 0.0.0.0, Cost 5, Tag 0 61 Apr 14 2017 13:00:40.700.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 62 , Nexthop 0.0.0.0, Cost 3, Tag 0 63 Apr 14 2017 13:00:40.700.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 64 4, Nexthop 0.0.0.0, Cost 4, Tag 0 65 Apr 14 2017 13:00:43.850.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 66 onse from 36.110.101.139 on GigabitEthernet0/0/0 67 Apr 14 2017 13:00:43.850.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 68 Cmd response, Length 84 69 Apr 14 2017 13:00:43.850.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 70 24, Nexthop 0.0.0.0, Cost 1, Tag 0 71 Apr 14 2017 13:00:43.850.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 72 , Nexthop 0.0.0.0, Cost 4, Tag 0 73 Apr 14 2017 13:00:43.850.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 74 , Nexthop 0.0.0.0, Cost 2, Tag 0 75 Apr 14 2017 13:00:43.850.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 76 4, Nexthop 0.0.0.0, Cost 3, Tag 0
对比2个日志，我们发现开启的水平分割很少不会经常往外放松信息，但是关闭了水平分割就会一直往外发送自己活得的路由信息，这里我们就要结合水平分割的原理来理解了。
2.接口上开启毒性逆转
[beijing]interface GigabitEthernet 0/0/0
[beijing-GigabitEthernet0/0/0]rip poison-reverse
[beijing]quit
12 Apr 14 2017 13:42:05.350.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 3 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 4 Apr 14 2017 13:42:05.350.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 5 Cmd response, Length 124 6 Apr 14 2017 13:42:05.350.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 7 4, Nexthop 0.0.0.0, Cost 16, Tag 0 8 Apr 14 2017 13:42:05.350.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 9 Nexthop 0.0.0.0, Cost 1, Tag 0 10 Apr 14 2017 13:42:05.350.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 11 24, Nexthop 36.110.101.139, Cost 16, Tag 0 12 Apr 14 2017 13:42:05.350.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 13 , Nexthop 36.110.101.139, Cost 16, Tag 0 14 Apr 14 2017 13:42:05.350.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 15 , Nexthop 36.110.101.139, Cost 16, Tag 0 16 Apr 14 2017 13:42:05.350.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 17 4, Nexthop 36.110.101.139, Cost 16, Tag 0 18 Apr 14 2017 13:42:13.70.2-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive respo 19 nse from 36.110.101.139 on GigabitEthernet0/0/0 20 Apr 14 2017 13:42:13.70.3-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, C 21 md response, Length 84 22 Apr 14 2017 13:42:13.70.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/2 23 4, Nexthop 0.0.0.0, Cost 1, Tag 0 24 Apr 14 2017 13:42:13.70.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24, 25 Nexthop 0.0.0.0, Cost 4, Tag 0 26 Apr 14 2017 13:42:13.70.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24, 27 Nexthop 0.0.0.0, Cost 2, Tag 0 28 Apr 14 2017 13:42:13.70.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/24 29 , Nexthop 0.0.0.0, Cost 3, Tag 0 30 Apr 14 2017 13:42:27.450.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 31 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 32 Apr 14 2017 13:42:27.450.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 33 Cmd response, Length 124 34 Apr 14 2017 13:42:27.450.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 35 4, Nexthop 0.0.0.0, Cost 1, Tag 0 36 Apr 14 2017 13:42:27.450.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 37 Nexthop 0.0.0.0, Cost 1, Tag 0 38 Apr 14 2017 13:42:27.450.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 39 24, Nexthop 0.0.0.0, Cost 2, Tag 0 40 Apr 14 2017 13:42:27.450.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 41 , Nexthop 0.0.0.0, Cost 5, Tag 0 42 Apr 14 2017 13:42:27.450.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 43 , Nexthop 0.0.0.0, Cost 3, Tag 0 44 Apr 14 2017 13:42:27.450.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 45 4, Nexthop 0.0.0.0, Cost 4, Tag 0 46 Apr 14 2017 13:42:34.490.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 47 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 48 Apr 14 2017 13:42:34.490.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 49 Cmd response, Length 124 50 Apr 14 2017 13:42:34.490.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 51 4, Nexthop 0.0.0.0, Cost 16, Tag 0 52 Apr 14 2017 13:42:34.490.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 53 Nexthop 0.0.0.0, Cost 1, Tag 0 54 Apr 14 2017 13:42:34.490.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 55 24, Nexthop 36.110.101.139, Cost 16, Tag 0 56 Apr 14 2017 13:42:34.490.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 57 , Nexthop 36.110.101.139, Cost 16, Tag 0 58 Apr 14 2017 13:42:34.490.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 59 , Nexthop 36.110.101.139, Cost 16, Tag 0 60 Apr 14 2017 13:42:34.490.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 61 4, Nexthop 36.110.101.139, Cost 16, Tag 0 62 Apr 14 2017 13:42:45.150.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 63 onse from 36.110.101.139 on GigabitEthernet0/0/0 64 Apr 14 2017 13:42:45.150.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 65 Cmd response, Length 84 66 Apr 14 2017 13:42:45.150.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 67 24, Nexthop 0.0.0.0, Cost 1, Tag 0 68 Apr 14 2017 13:42:45.150.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 69 , Nexthop 0.0.0.0, Cost 4, Tag 0 70 Apr 14 2017 13:42:45.150.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 71 , Nexthop 0.0.0.0, Cost 2, Tag 0 72 Apr 14 2017 13:42:45.150.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 73 4, Nexthop 0.0.0.0, Cost 3, Tag 0 74 Apr 14 2017 13:42:58.620.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 75 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 76 Apr 14 2017 13:42:58.620.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 77 Cmd response, Length 124 78 Apr 14 2017 13:42:58.620.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 79 4, Nexthop 0.0.0.0, Cost 1, Tag 0 80 Apr 14 2017 13:42:58.620.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 81 Nexthop 0.0.0.0, Cost 1, Tag 0 82 Apr 14 2017 13:42:58.620.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 83 24, Nexthop 0.0.0.0, Cost 2, Tag 0 84 Apr 14 2017 13:42:58.620.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 85 , Nexthop 0.0.0.0, Cost 5, Tag 0 86 Apr 14 2017 13:42:58.620.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 87 , Nexthop 0.0.0.0, Cost 3, Tag 0 88 Apr 14 2017 13:42:58.620.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 89 4, Nexthop 0.0.0.0, Cost 4, Tag 0 90 Apr 14 2017 13:43:02.620.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 91 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 92 Apr 14 2017 13:43:02.620.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 93 Cmd response, Length 124 94 Apr 14 2017 13:43:02.620.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 95 4, Nexthop 0.0.0.0, Cost 16, Tag 0 96 Apr 14 2017 13:43:02.620.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 97 Nexthop 0.0.0.0, Cost 1, Tag 0 98 Apr 14 2017 13:43:02.620.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 99 24, Nexthop 36.110.101.139, Cost 16, Tag 0 100 Apr 14 2017 13:43:02.620.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 101 , Nexthop 36.110.101.139, Cost 16, Tag 0 102 Apr 14 2017 13:43:02.620.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 103 , Nexthop 36.110.101.139, Cost 16, Tag 0 104 Apr 14 2017 13:43:02.620.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 105 4, Nexthop 36.110.101.139, Cost 16, Tag 0 106 Apr 14 2017 13:43:10.260.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 107 onse from 36.110.101.139 on GigabitEthernet0/0/0 108 Apr 14 2017 13:43:10.260.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 109 Cmd response, Length 84 110 Apr 14 2017 13:43:10.260.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 111 24, Nexthop 0.0.0.0, Cost 1, Tag 0 112 Apr 14 2017 13:43:10.260.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 113 , Nexthop 0.0.0.0, Cost 4, Tag 0 114 Apr 14 2017 13:43:10.260.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 115 , Nexthop 0.0.0.0, Cost 2, Tag 0 116 Apr 14 2017 13:43:10.260.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 117 4, Nexthop 0.0.0.0, Cost 3, Tag 0 118 Apr 14 2017 13:43:23.780.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 119 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 120 Apr 14 2017 13:43:23.780.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 121 Cmd response, Length 124 122 Apr 14 2017 13:43:23.780.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 123 4, Nexthop 0.0.0.0, Cost 1, Tag 0 124 Apr 14 2017 13:43:23.780.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 125 Nexthop 0.0.0.0, Cost 1, Tag 0 126 Apr 14 2017 13:43:23.780.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 127 24, Nexthop 0.0.0.0, Cost 2, Tag 0 128 Apr 14 2017 13:43:23.780.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 129 , Nexthop 0.0.0.0, Cost 5, Tag 0 130 Apr 14 2017 13:43:23.780.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 131 , Nexthop 0.0.0.0, Cost 3, Tag 0 132 Apr 14 2017 13:43:23.780.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 133 4, Nexthop 0.0.0.0, Cost 4, Tag 0 134 Apr 14 2017 13:43:32.820.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 135 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 136 Apr 14 2017 13:43:32.820.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 137 Cmd response, Length 104 138 Apr 14 2017 13:43:32.820.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 139 Nexthop 0.0.0.0, Cost 1, Tag 0 140 Apr 14 2017 13:43:32.820.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 141 24, Nexthop 36.110.101.139, Cost 16, Tag 0 142 Apr 14 2017 13:43:32.820.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 143 , Nexthop 36.110.101.139, Cost 16, Tag 0 144 Apr 14 2017 13:43:32.820.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 145 , Nexthop 36.110.101.139, Cost 16, Tag 0 146 Apr 14 2017 13:43:32.820.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 147 4, Nexthop 36.110.101.139, Cost 16, Tag 0 148 Apr 14 2017 13:43:36.400.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 149 onse from 36.110.101.139 on GigabitEthernet0/0/0 150 Apr 14 2017 13:43:36.400.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 151 Cmd response, Length 84 152 Apr 14 2017 13:43:36.400.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 153 24, Nexthop 0.0.0.0, Cost 1, Tag 0 154 Apr 14 2017 13:43:36.400.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 155 , Nexthop 0.0.0.0, Cost 4, Tag 0 156 Apr 14 2017 13:43:36.400.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 157 , Nexthop 0.0.0.0, Cost 2, Tag 0 158 Apr 14 2017 13:43:36.400.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 159 4, Nexthop 0.0.0.0, Cost 3, Tag 0 160 Apr 14 2017 13:43:49.870.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 161 onse on interface Ethernet0/0/0 from 172.30.1.254 to 224.0.0.9 162 Apr 14 2017 13:43:49.870.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 163 Cmd response, Length 124 164 Apr 14 2017 13:43:49.870.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 36.110.101.0/2 165 4, Nexthop 0.0.0.0, Cost 1, Tag 0 166 Apr 14 2017 13:43:49.870.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 167 Nexthop 0.0.0.0, Cost 1, Tag 0 168 Apr 14 2017 13:43:49.870.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 169 24, Nexthop 0.0.0.0, Cost 2, Tag 0 170 Apr 14 2017 13:43:49.870.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 171 , Nexthop 0.0.0.0, Cost 5, Tag 0 172 Apr 14 2017 13:43:49.870.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 173 , Nexthop 0.0.0.0, Cost 3, Tag 0 174 Apr 14 2017 13:43:49.870.8-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 175 4, Nexthop 0.0.0.0, Cost 4, Tag 0 176 Apr 14 2017 13:43:59.930.1-08:00 beijing RIP/7/DBG: 6: 12227: RIP 1: Sending resp 177 onse on interface GigabitEthernet0/0/0 from 36.110.101.138 to 224.0.0.9 178 Apr 14 2017 13:43:59.930.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 179 Cmd response, Length 104 180 Apr 14 2017 13:43:59.930.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 181 Nexthop 0.0.0.0, Cost 1, Tag 0 182 Apr 14 2017 13:43:59.930.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 183 24, Nexthop 36.110.101.139, Cost 16, Tag 0 184 Apr 14 2017 13:43:59.930.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 185 , Nexthop 36.110.101.139, Cost 16, Tag 0 186 Apr 14 2017 13:43:59.930.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 187 , Nexthop 36.110.101.139, Cost 16, Tag 0 188 Apr 14 2017 13:43:59.930.7-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 189 4, Nexthop 36.110.101.139, Cost 16, Tag 0 190 Apr 14 2017 13:44:06.460.1-08:00 beijing RIP/7/DBG: 6: 12236: RIP 1: Receive resp 191 onse from 36.110.101.139 on GigabitEthernet0/0/0 192 Apr 14 2017 13:44:06.460.2-08:00 beijing RIP/7/DBG: 6: 12247: Packet: Version 2, 193 Cmd response, Length 84 194 Apr 14 2017 13:44:06.460.3-08:00 beijing RIP/7/DBG: 6: 12315: Dest 180.168.255.0/ 195 24, Nexthop 0.0.0.0, Cost 1, Tag 0 196 Apr 14 2017 13:44:06.460.4-08:00 beijing RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 197 , Nexthop 0.0.0.0, Cost 4, Tag 0 198 Apr 14 2017 13:44:06.460.5-08:00 beijing RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 199 , Nexthop 0.0.0.0, Cost 2, Tag 0 200 Apr 14 2017 13:44:06.460.6-08:00 beijing RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 201 4, Nexthop 0.0.0.0, Cost 3, Tag 0
我们可以发现日志中出现了很多的cost为16的日志信息。
3.接口上配置silent-interface （即被动接口）
被动接口，如果一个允许了RIP的接口被设置为被动接口，那么该接口只能接收路由更新，但是不发送路由更新。
[shanghai]rip
[shanghai-rip-1]version 2
[shanghai-rip-1]undo summary
[shanghai-rip-1]silent-interface GigabitEthernet 0/0/0 #将这个端口设置为被动端口
[shanghai-rip-1]quit
[shanghai]quit
12 Apr 14 2017 18:41:54.90.1-08:00 shanghai RIP/7/DBG: 25: 4379: RIP 1: Periodic tim 3 er expired for interface GigabitEthernet0/0/1 (180.168.255.118) and its added to 4 periodic update queue 5 Apr 14 2017 18:41:54.90.2-08:00 shanghai RIP/7/DBG: 25: 4707: RIP 1: Interface Gi 6 gabitEthernet0/0/1 (180.168.255.118) is deleted from the periodic update queue 7 Apr 14 2017 18:41:54.750.1-08:00 shanghai RIP/7/DBG: 6: 12236: RIP 1: Receive res 8 ponse from 36.110.101.138 on GigabitEthernet0/0/0 9 Apr 14 2017 18:41:54.750.2-08:00 shanghai RIP/7/DBG: 6: 12247: Packet: Version 2, 10 Cmd response, Length 24 11 Apr 14 2017 18:41:54.750.3-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24 12 , Nexthop 0.0.0.0, Cost 1, Tag 0 13 Apr 14 2017 18:41:55.270.1-08:00 shanghai RIP/7/DBG: 6: 12227: RIP 1: Sending res 14 ponse on interface GigabitEthernet0/0/1 from 180.168.255.118 to 224.0.0.9 15 Apr 14 2017 18:41:55.270.2-08:00 shanghai RIP/7/DBG: 6: 12247: Packet: Version 2, 16 Cmd response, Length 44 17 Apr 14 2017 18:41:55.270.3-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 36.110.101.0/ 18 24, Nexthop 0.0.0.0, Cost 1, Tag 0 19 Apr 14 2017 18:41:55.270.4-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24 20 , Nexthop 0.0.0.0, Cost 2, Tag 0 21 Apr 14 2017 18:41:56.60.1-08:00 shanghai RIP/7/DBG: 6: 12236: RIP 1: Receive resp 22 onse from 180.168.255.119 on GigabitEthernet0/0/1 23 Apr 14 2017 18:41:56.60.2-08:00 shanghai RIP/7/DBG: 6: 12247: Packet: Version 2, 24 Cmd response, Length 64 25 Apr 14 2017 18:41:56.60.3-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24 26 , Nexthop 0.0.0.0, Cost 3, Tag 0 27 Apr 14 2017 18:41:56.60.4-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24 28 , Nexthop 0.0.0.0, Cost 1, Tag 0 29 Apr 14 2017 18:41:56.60.5-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 221.11.132.0/2 30 4, Nexthop 0.0.0.0, Cost 2, Tag 0 31 Apr 14 2017 18:42:23.200.1-08:00 shanghai RIP/7/DBG: 25: 4379: RIP 1: Periodic ti 32 mer expired for interface GigabitEthernet0/0/1 (180.168.255.118) and its added to 33 periodic update queue 34 Apr 14 2017 18:42:23.200.2-08:00 shanghai RIP/7/DBG: 25: 4707: RIP 1: Interface G 35 igabitEthernet0/0/1 (180.168.255.118) is deleted from the periodic update queue 36 Apr 14 2017 18:42:23.920.1-08:00 shanghai RIP/7/DBG: 6: 12236: RIP 1: Receive res 37 ponse from 36.110.101.138 on GigabitEthernet0/0/0 38 Apr 14 2017 18:42:23.920.2-08:00 shanghai RIP/7/DBG: 6: 12247: Packet: Version 2, 39 Cmd response, Length 24 40 Apr 14 2017 18:42:23.920.3-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24 41 , Nexthop 0.0.0.0, Cost 1, Tag 0 42 Apr 14 2017 18:42:24.140.1-08:00 shanghai RIP/7/DBG: 6: 12236: RIP 1: Receive res 43 ponse from 180.168.255.119 on GigabitEthernet0/0/1 44 Apr 14 2017 18:42:24.140.2-08:00 shanghai RIP/7/DBG: 6: 12247: Packet: Version 2, 45 Cmd response, Length 64 46 Apr 14 2017 18:42:24.140.3-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 192.168.1.0/2 47 4, Nexthop 0.0.0.0, Cost 3, Tag 0 48 Apr 14 2017 18:42:24.140.4-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 202.14.67.0/2 49 4, Nexthop 0.0.0.0, Cost 1, Tag 0 50 Apr 14 2017 18:42:24.140.5-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 221.11.132.0/ 51 24, Nexthop 0.0.0.0, Cost 2, Tag 0 52 Apr 14 2017 18:42:24.380.1-08:00 shanghai RIP/7/DBG: 6: 12227: RIP 1: Sending res 53 ponse on interface GigabitEthernet0/0/1 from 180.168.255.118 to 224.0.0.9 54 Apr 14 2017 18:42:24.380.2-08:00 shanghai RIP/7/DBG: 6: 12247: Packet: Version 2, 55 Cmd response, Length 44 56 Apr 14 2017 18:42:24.380.3-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 36.110.101.0/ 57 24, Nexthop 0.0.0.0, Cost 1, Tag 0 58 Apr 14 2017 18:42:24.380.4-08:00 shanghai RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24 59 , Nexthop 0.0.0.0, Cost 2, Tag 0
我们可以从这个日志中看出只有接收路由没有发送路由！
六.RIP认证
配置香港的路由和海南的路由进行RIP认证模式。
香港 配置如下：
[hongkong]interface GigabitEthernet 0/0/0
[hongkong-GigabitEthernet0/0/0]rip authentication-mode md5 usual yinzhengjie123
海南配置如下：
[hainan]interface GigabitEthernet 0/0/0
[hainan-GigabitEthernet0/0/0]rip authentication-mode md5 usual yinzhengjie123
注意：H3C配置也是这样的格式配置，知识加密的方式变化了而已，注意配置认证的密码“yinzhengjie123”在2个即可要配置成一直才可以哟，不然会报错
12 Apr 14 2017 18:52:10.250.1-08:00 hainan RIP/7/DBG: 6: 12227: RIP 1: Sending respo 3 nse on interface GigabitEthernet0/0/0 from 202.14.67.5 to 224.0.0.9 4 Apr 14 2017 18:52:10.250.2-08:00 hainan RIP/7/DBG: 6: 12247: Packet: Version 2, C 5 md response, Length 68 6 Apr 14 2017 18:52:10.250.3-08:00 hainan RIP/7/DBG: 6: 12407: Authentication-mode 7 - MD5 Digest: e7c72b0b.7f7b45b0.93e21a3f.eaee65e1 8 Apr 14 2017 18:52:10.250.4-08:00 hainan RIP/7/DBG: 6: 12439: Sequence: 00000430 9 Apr 14 2017 18:52:10.250.5-08:00 hainan RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24, N 10 exthop 0.0.0.0, Cost 2, Tag 0 11 Apr 14 2017 18:52:10.250.6-08:00 hainan RIP/7/DBG: 6: 12315: Dest 221.11.132.0/24, 12 Nexthop 0.0.0.0, Cost 1, Tag 0 13 Apr 14 2017 18:52:17.490.1-08:00 hainan RIP/7/DBG: 6: 12236: RIP 1: Receive respo 14 nse from 202.14.67.4 on GigabitEthernet0/0/0 15 Apr 14 2017 18:52:17.490.2-08:00 hainan RIP/7/DBG: 6: 12247: Packet: Version 2, C 16 md response, Length 88 17 Apr 14 2017 18:52:17.490.3-08:00 hainan RIP/7/DBG: 6: 12407: Authentication-mode 18 - MD5 Digest: 88e8c82a.cba1f8b4.df15be4b.8957aa3f 19 Apr 14 2017 18:52:17.490.4-08:00 hainan RIP/7/DBG: 6: 12439: Sequence: 0000043b 20 Apr 14 2017 18:52:17.490.5-08:00 hainan RIP/7/DBG: 6: 12315: Dest 36.110.101.0/24, 21 Nexthop 0.0.0.0, Cost 2, Tag 0 22 Apr 14 2017 18:52:17.490.6-08:00 hainan RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, Ne 23 xthop 0.0.0.0, Cost 3, Tag 0 24 Apr 14 2017 18:52:17.490.7-08:00 hainan RIP/7/DBG: 6: 12315: Dest 180.168.255.0/24, 25 Nexthop 0.0.0.0, Cost 1, Tag 0 26 Apr 14 2017 18:52:21.270.1-08:00 hainan RIP/7/DBG: 6: 12227: RIP 1: Sending respo 27 nse on interface GigabitEthernet0/0/1 from 221.11.132.21 to 224.0.0.9 28 Apr 14 2017 18:52:21.270.2-08:00 hainan RIP/7/DBG: 6: 12247: Packet: Version 2, C 29 md response, Length 84 30 Apr 14 2017 18:52:21.270.3-08:00 hainan RIP/7/DBG: 6: 12315: Dest 36.110.101.0/24 31 , Nexthop 0.0.0.0, Cost 3, Tag 0 32 Apr 14 2017 18:52:21.270.4-08:00 hainan RIP/7/DBG: 6: 12315: Dest 172.30.1.0/24, 33 Nexthop 0.0.0.0, Cost 4, Tag 0 34 Apr 14 2017 18:52:21.270.5-08:00 hainan RIP/7/DBG: 6: 12315: Dest 180.168.255.0/2 35 4, Nexthop 0.0.0.0, Cost 2, Tag 0 36 Apr 14 2017 18:52:21.270.6-08:00 hainan RIP/7/DBG: 6: 12315: Dest 202.14.67.0/24, 37 Nexthop 0.0.0.0, Cost 1, Tag 0 38 Apr 14 2017 18:52:25.860.2-08:00 hainan RIP/7/DBG: 6: 12236: RIP 1: Receive respo 39 nse from 221.11.132.22 on GigabitEthernet0/0/1 40 Apr 14 2017 18:52:25.860.3-08:00 hainan RIP/7/DBG: 6: 12247: Packet: Version 2, C 41 md response, Length 24 42 Apr 14 2017 18:52:25.860.4-08:00 hainan RIP/7/DBG: 6: 12315: Dest 192.168.1.0/24, 43 Nexthop 0.0.0.0, Cost 1, Tag 0
调试完信息之后，如果不想看的话可以关闭调试信息：
扩展题：
路由器不收路由更新，180s后才能从IP路由表中丢到回收站，这个时间能不能缩短？
答：可以的。
[beijing]rip
[beijing-rip-1]version 2
[beijing-rip-1]timers timeout 60 #进程模式下降时间设置成为60s