Ciso Packet Tracer配置静态路由及默认路由（二）
Instructor：Mr.Zhang
二、步骤2
配置R1的静态路由，保证R1能正确转发到R2和R3的loopback接口的数据包 （配置4条精确的静态路由）
R1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#ip route 13.3.20.0 255.255.255.0 13.3.123.2
R1(config)#ip route 13.3.21.0 255.255.255.0 13.3.123.2
R1(config)#ip route 13.3.22.0 255.255.255.0 13.3.123.3
R1(config)#ip route 13.3.23.0 255.255.255.0 13.3.123.3
R1(config)#
三、步骤3
检查R1的路由表，观察静态路由在路由表的表现形式
R1#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
13.0.0.0/24 is subnetted, 6 subnets
C 13.3.0.0 is directly connected, Ethernet1/0
S 13.3.20.0 [1/0] via 13.3.123.2
S 13.3.21.0 [1/0] via 13.3.123.2
S 13.3.22.0 [1/0] via 13.3.123.3
S 13.3.23.0 [1/0] via 13.3.123.3
C 13.3.123.0 is directly connected, Ethernet1/1
R1# //“C”表示的是直连网络，“S”表示静态路由
四、步骤4
配置R2和R3的静态路由，保证两台路由器都能转发到对方Loopback接口的数据包
R2#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#ip route 13.3.22.0 255.255.255.0 13.3.123.3
R2(config)#ip route 13.3.23.0 255.255.255.0 13.3.123.3
R2(config)#
R3#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R3(config)#ip route 13.3.20.0 255.255.255.0 13.3.123.2
R3(config)#ip route 13.3.21.0 255.255.255.0 13.3.123.2
R3(config)#
测试
R2#ping 13.3.23.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 13.3.23.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 5/26/40 ms
R2#
R3#ping 13.3.20.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 13.3.20.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 5/8/10 ms
R3#