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PDF user manual for CopperEdge 150

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IPBase AddressThe numbers in the chart also can be generated by applying thefollowing rule: an IP address cannot have any ones where thesubnet mask has zeros. For example, the address 10.0.21.6cannot be assigned a subnet mask of 255.255.255.252 or /30because the number 6 in binary <strong>for</strong>mat is 0000 0110 and thenumber 252 in binary <strong>for</strong>mat is 1111 1100.The following table compares the numbers 1-32 in binary <strong>for</strong>matwith six different net masks in binary <strong>for</strong>mat. It showswhat ranges can be assigned to base numbers.Comparison of IP Addresses and Net Masks in Binary Format1 Host (/32)11112 Hosts(/31) 11104 Hosts (/30)1100 (/30)8 Hosts (/29)100016 Hosts (/28)0000 (/28)32 Hosts (/27)0 0000(.1) 0001 y n n n n n(.2) 0010 y y n n n n(.3) 0011 y n n n n n(.4) 0100 y y y n n n(.5) 0101 y n n n n n(.6) 0110 y y n n n n(.7) 0111 y n n n n n(.8) 1000 y y y y n n(.9) 1001 y n n n n n(.10) 1010 y y n n n n(.11) 1011 y n n n n n(.12) 1100 y y y n n n(.13) 1101 y n n n n n(.14) 1110 y y n n n n(.15) 1111 y n n n n n(.16) 0001 0000 y y y y y n(.17) 0001 0001 y n n n n n(.18) 0001 0010 y y n n n n(.19) 0001 0011 y n n n n n(.20) 0001 0100 y y y n n n(.21) 0001 0101 y n n n n n(.22) 0001 0110 y y n n n n(.23) 0001 0111 y n n n n n(.24) 0001 1000 y y y y n n(.25) 0001 1001 y n n n n n(.26) 0001 1010 y y n n n n(.27) 0001 1011 y n n n n n(.28) 0001 1100 y y y n n n(.29) 0001 1101 y n n n n n(.30) 0001 1110 y y n n n n(.31) 0001 1111 y n n n n n(.32) 0010 0000 y y y y y y&KDSWHU9RLFHRYHU'6/

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