Ping statistics for 12.0.0.1:
Packets: Sent = 2, Received = 1, Lost = 1 (50% loss), Approximate round trip times in milli-seconds: Minimum = 47ms, Maximum = 47ms, Average = 47ms
Control-C ^C
C:\\>ping 10.0.0.1
Pinging 10.0.0.1 with 32 bytes of data:
Reply from 10.0.0.1: bytes=32 time=31ms TTL=254
Ping statistics for 10.0.0.1:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 31ms, Maximum = 31ms, Average = 31ms
Control-C ^C
C:\\>ping 10.0.0.2
Pinging 10.0.0.2 with 32 bytes of data:
Reply from 10.0.0.2: bytes=32 time<1ms TTL=255 Reply from 10.0.0.2: bytes=32 time<1ms TTL=255
Ping statistics for 10.0.0.2:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C ^C
C:\\>ping 192.168.1.1
Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.1: bytes=32 time<1ms TTL=255
Ping statistics for 192.168.1.1:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C ^C
C:\\>
（3）实验小结
RIP是一个距离矢量路由协议，非常简单，仅通过源节点与目的节点之间的路由器或路程段的数目（跳数）来决定发送数据包的最佳途径。由于RIP自身的一些限制，其允许的最大跳数为15，只适用于小型的网络。RIP有两种版本：RIPv1和RIPv2。前者不支持VLSM，而后者支持。
2、路由器的OSPF协议配置 (1)实验准备工作
运用Cisco Packet Tracer软件设计如下网络拓扑图。不同型号的交换机配置命令不同，这里选择2600系列路由器的2621型号，交换机选择2900系列。IP地址、掩码和连接路由器的端口号如图所示。将网络拓扑图保存，并在Cisco Packet Tracer模拟器中打开该图（参考实验4的方法）。
IP: 12.0.0.2/24
IP: 11.0.0.2/24
f0/0
IP: 11.0.0.1/24 f0/0
IP: 12.0.0.1/24
f0/1
f0/0
IP: 10.0.0.1/24 se0/0 f0/1
se0/0
IP: 10.0.0.2/24
f0/0
IP: 192.168.1.1/24
IP: 192.168.1.2/24
f0/2
f0/3
IP: 192.168.1.3/24
（2）实验过程
1）使用上述的网络拓扑图作为本实验所需的网络，配置PC的IP地址和子网掩码。 2）连接到路由器Router3，配置路由器的OSPF，命令如下： Router>enable
Router#conf terminal
Router(config)#hostname R3
R3(config)#interface FastEthernet 0/0
R3(config-if)#ip address 11.0.0.1 255.255.255.0 R3(config-if)#no shutdown
R3(config-if)#interface FastEthernet 0/1
R3(config-if)#ip address 12.0.0.1 255.255.255.0 R3(config-if)#no shutdown
R3(config-if)#interface serial 0
R3(config-if)#ip address 10.0.0.1 255.255.255.0
R3(config-if)#bandwidth 128 //设置链路带宽为128kbit/s R3(config-if)#clock rate 64000 //设置DCE设备的时钟速率 R3(config-if)#no shutdown R3(config-if)#exit
//启动进程号为10的单区域OSPF路由选择进程 R3(config)#router ospf 10
//在接口S0启动OSPF，加入区域0
R3(config-router)#network 10.0.0.0 0.0.0.255 area 0 //通告直连网络 //在接口F0/0启动OSPF，加入区域0
R3(config-router)#network 11.0.0.0 0.0.0.255 area 0 //通告直连网络 //在接口F0/1启动OSPF，加入区域0
R3(config-router)#network 12.0.0.0 0.0.0.255 area 0 //通告直连网络 R3(config-router)#exit
4）按照步骤（3）分别完成路由器R1、R2、R4的接口和OSPF配置。 //在R1上启动进程号为10的单区域 //OSPF路由选择进程
R1(config)#router ospf 10
R1(config-router)#network 11.0.0.0 0.0.0.255 area 0
//在R2上启动进程号为10的单区域OSPF路由选择进程 R2(config)#router ospf 10
R2(config-router)#network 12.0.0.0 0.0.0.255 area 0
//在R4上启动进程号为10的单区域OSPF路由选择进程 R4(config)#router ospf 10
R4(config-router)#network 10.0.0.0 0.0.0.255 area 0 R4(config-router)#network 192.168.1.0 0.0.0.255 area 0
5）连接到路由器R1中，通过命令“show ip route”显示R1的动态路由表，观察路由表项，当目标网络是192.168.1.0/24时，度量值为多少？
度量值为：110
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 1 subnets
O 10.0.0.0 [110/65] via 11.0.0.1, 00:01:55, FastEthernet0/0 11.0.0.0/24 is subnetted, 1 subnets
C 11.0.0.0 is directly connected, FastEthernet0/0 12.0.0.0/24 is subnetted, 1 subnets
O 12.0.0.0 [110/2] via 11.0.0.1, 00:01:55, FastEthernet0/0
O 192.168.1.0/24 [110/66] via 11.0.0.1, 00:00:23, FastEthernet0/0
6）连接到R2、R3和R4，查看每台路由器的路由表。 R2路由表：
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 1 subnets
O 10.0.0.0 [110/65] via 12.0.0.1, 00:03:20, FastEthernet0/0 11.0.0.0/24 is subnetted, 1 subnets
O 11.0.0.0 [110/2] via 12.0.0.1, 00:03:20, FastEthernet0/0 12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, FastEthernet0/0
O 192.168.1.0/24 [110/66] via 12.0.0.1, 00:02:23, FastEthernet0/0 R3路由表：
R3#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 1 subnets
C 10.0.0.0 is directly connected, Serial0/0 11.0.0.0/24 is subnetted, 1 subnets
C 11.0.0.0 is directly connected, FastEthernet0/0 12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, FastEthernet0/1
O 192.168.1.0/24 [110/65] via 10.0.0.2, 00:02:58, Serial0/0