IPnetAddr - Network Layer 4-3 IP Address Dotted-Decimal...

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Network Layer 4-1 IP Network Address Bitwise Calculations 1101000 00011001 0001xxxx xxxxxxxx Network Mask, 0 or 1 -> 1, x -> 0    11111111 11111111 11110000 00000000 Minimum Host Address:  x -> 0  1101000 00011001 00010000 00000000 Maximum Host Address: x -> 1  1101000 00011001 00011111 11111111 Minimum host address is the “Network Address” Maximum host address is the “Broadcast Addr.” Number of Addresses available for assignment to hosts:        2**(32-20) -2 = 4096 - 2 = 4094 200.23.16.0/20     20 bits in Net Address
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Network Layer 4-2 IP Address Dotted-Decimal Calculations 1101000 00011001 0001xxxx xxxxxxxx Byte 3 is the “Split Byte 200.23.16.0/20 No. Network Bits  in the "Split Byte Mask Value of  Split Byte Network Part  is Multiple   of: Host Part  from Zero to: 128  128  127  192  64  63  224  32  31  240  16  15  248  252  254 
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Unformatted text preview: Network Layer 4-3 IP Address Dotted-Decimal Calculations - 2 1101000 00011001 0001xxxx xxxxxxxx Byte 3 is the “Split Byte (4 network bits) Byte 4 is “Host Only”, 1 & 2 are “Network Only” 200.23.16.0/20 Network Mask = 255.255.240.0 Min. Host Addr. (Network Addr.) = 200.23.16.0 Maximum Host Address = 200.23.(16+15).255 (Broadcast Address = 200.23.31.255) Number of Host Addresses = 2^12 = (15+1)*256 No. Network Bits in the "Split Byte Mask Value of Split Byte Network Part is Multiple of: Host Part from Zero to: 4 240 16 15 Network Layer 4-4 IP addressing: the last word. .. Q: How does an ISP (or organization) get a block of addresses? A: ICANN : I nternet C orporation for A ssigned N ames and N umbers (www.icann.org) ❍ allocates addresses to Autonomous Systems ❍ manages DNS ❍ assigns domain names, resolves disputes...
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IPnetAddr - Network Layer 4-3 IP Address Dotted-Decimal...

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