R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.R1(config)#int f0/0
R1(config-if)#no shutdown
R1(config-if)#ip address 192.168.1.254 255.255.255.0
R1(config-if)#end
R1#
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#int f1/0
R1(config-if)#no shutdown
R1(config-if)#ip address 192.168.2.254 255.255.255.0
R1(config-if)#end
R1#
*Mar 1 00:03:39.059: %SYS-5-CONFIG_I: Configured from console by console
R1#show ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.1.254 YES manual up up
FastEthernet1/0 192.168.2.254 YES manual up up
R1#
PC1端配置：
PC1#show version
Cisco Internetwork Operating System SoftwareIOS (tm) 3600 Software (C3640-JK9S-M), Version 12.3(20), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by cisco Systems, Inc.
Compiled Tue 08-Aug-06 16:37 by kesnyder
Image text-base: 0x60008B00, data-base: 0x620DC000
关闭路由镜像：
PC1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
PC1(config)#no ip routing
PC1(config)#int f0/0
PC1(config-if)#no shutdown
*Mar 1 00:10:25.811: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:10:26.811: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
PC1(config-if)#ip address 192.168.1.1 255.255.255.0
PC1(config-if)#end
PC1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
PC1(config)#ip default-gateway 192.168.1.254
PC1(config)#end
PC1#show ip route
Default gateway is 192.168.1.254
Host Gateway Last Use Total Uses Interface
ICMP redirect cache is empty
PC2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
PC2(config)#no ip routing
PC2(config)#int f0/0
PC2(config-if)#no shutdown
*Mar 1 00:13:57.919: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:13:58.919: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
PC2(config-if)#ip address 192.168.2.1 255.255.255.0
PC2(config-if)#end
PC2#
*Mar 1 00:14:13.179: %SYS-5-CONFIG_I: Configured from console by console
PC2#conf t
Enter configuration commands, one per line. End with CNTL/Z.PC2(config)#ip default-gateway 192.168.2.254
PC2(config)#end
PC2#show ip route
Default gateway is 192.168.2.254
Host Gateway Last Use Total Uses Interface
ICMP redirect cache is empty
验证：
PC2#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/306/1372 ms
PC2#ping 192.168.1.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/978/1700 ms