R1(config)#access-list 100 permit ip host 1.1.1.1 any 
R1(config)#access-list 100 permit ip host 1.1.1.1 any  
R1(config)#access-list 100 deny ip any any 
R1(config)#end 
R1#debug ip packet 100 
IP packet debugging is on for access list 100 
R1#ping 2.2.2.2 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/49/60 ms 
R1#ping 2.2.2.2 source 1.1.1.1 re 
R1#ping 2.2.2.2 source 1.1.1.1 repeat 1 
Type escape sequence to abort. 
Sending 1, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds: 
Packet sent with a source address of 1.1.1.1  
! 
Success rate is 100 percent (1/1), round-trip min/avg/max = 48/48/48 ms 
R1# 
*Jan 14 06:11:05.837: IP: s=1.1.1.1 (local), d=2.2.2.2 (Serial1/0), len 100, sending 
*Jan 14 06:11:05.845: IP: s=1.1.1.1 (local), d=2.2.2.2 (Serial1/0), len 100, sending full packet 
R1# 
 
 
 
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