http://tinyurl.com/q6jfnhv

2^3=8

000 00000=0
001 00000=32
010 00000=64
011 00000=96


192.168.5.0/24

borrow 1 bit will give 2 subnets=>/25
192.168.5.xhhh hhhh=>192.168.5.0hhh hhhh 
		   =>192.168.5.0000 0000 =192.168.5.0/25	
                   =>192.168.5.0000 0001 =192.168.5.1/25
		   =>192.168.5.0111 1110 =192.168.5.126/25
		   =>192.168.5.0111 1111 =192.168.5.127/25  
		   

		   =>192.168.5.1hhh hhhh
		   =>192.168.5.1000 0000=192.168.5.128
		   =>192.168.5.1000 0001=192.168.5.129
		   =>192.168.5.1111 1110=192.168.5.254
		   =>192.168.5.1111 1111=192.168.5.255
12/10/2015
0-match
1 ignore
1.access-list 1 permit 10.1.1.8 0.0.0.3

2.access-list 1 permit 10.1.1.16 0.0.0.7
16=0001 0000 
23=0001 0111
 7=0000 0111

23 will comes in between 16 and 7

3.access-list 1 permit 10.1.1.16 0.0.0.15
16=0001 0000
29=0001 1101
15=0000 1101
16 to 31
4, access-list 1 permit 10.1.1.16 0.0.0.1
16=0001 0000
17=0001 0001
 1=0000 0001
  16&17