实验二：ip classless

 

 

2、实验过程

r1(config)#int lo0

r1(config-if)#ip add 10.1.1.1 255.255.255.0

r1(config-if)#int s1/0

r1(config-if)#ip add 192.168.12.1 255.255.255.0

r1(config-if)#no shut

r1(config)#ip route 0.0.0.0 0.0.0.0 192.168.12.2

r2(config)#ip route 0.0.0.0 0.0.0.0 192.168.12.1

注：默认情况下ip classless 和ip cef是开启的。

r1#ping 10.2.2.2 source 10.1.1.1

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:

Packet sent with a source address of 10.1.1.1

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/34/84 ms

r1(config)#no ip classless

r1(config)#no ip cef

r1#ping 10.2.2.2       

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5

r1#ping 10.2.2.2 source 10.1.1.1

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:

Packet sent with a source address of 10.1.1.1

.....

Success rate is 0 percent (0/5)