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Subnet Masks%281%29

Apr 03, 2018

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    h Class C11111111 . 11111111 . 11111111 . 1 1 0 0 0 0 0 0

    128 + 64 + 0 + 0 + 0 + 0 + 0 + 0

    S.N.M. 255 . 255 . 255 .

    128 64 32 16 8 4 2 1

    0 1 0 0 0 0 0 0

    0 1 0 0 0 0 0 1

    0 1 1 1 1 1 1 0

    0 1 1 1 1 1 1 1

    1 0 0 0 0 0 0 0

    1 0 0 0 0 0 0 1

    Range of Subnets

    ubnet Usable Subnet xxx.xxx.xxx.128

    Start

    Usable Subnet

    xxx.xxx.xxx.129

    1

    2

    xxx.xxx.xxx.64

    xxx.xxx.xxx.128

    xxx.xxx.xxx.65

    26 bits not borrowed (2x2x2x2x2x2)

    Usable Subnet

    Host Address

    Start

    xxx.xxx.xxx.127

    xxx.xxx.xxx.129

    Net - ID Host - ID

    1stSubnet xxx.xxx.xxx. 64

    xxx.xxx.xxx. 65

    xxx.xxx.xxx.126

    xxx.xxx.xxx.127

    Hosts

    Broadcast Address

    End

    # of Usable SubnetsUse the formula 2b - 2 where b is equal to the # of bits borrowed.

    22 bits borrowed

    - 2

    Broadcast Address

    (2x2x2x2x2x2) - 2

    64

    1st

    usable subnet range

    and increment value

    2

    # of Usable Hosts62

    xxx.xxx.xxx.191

    Starting Address

    2 Bits Borrowed

    # of Usable Subnets

    Use the formula 2n

    - 2 where n is equal to the # of bits not borrowed. # of Usable Hosts

    192

    (2x2) - 2

    Use the formula 2n

    where n is equal to the # of bits not borrowed.The result identifies the first "usable" subnet range will be and also identify the

    increments of the ranges.

    26 bits not borrowed

    - 2

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    u

    1 0 1 1 1 1 1 0

    1 0 1 1 1 1 1 1xxx.xxx.xxx.1912nd

    S End

    Broadcast Address

    xxx.xxx.xxx.190

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    Class C11111111 . 11111111 . 11111111 . 1 1 1 0 0 0 0 0

    128 + 64 + 32 + 0 + 0 + 0 + 0 + 0

    S.N.M. 255 . 255 . 255 .

    3 xxx.xxx.xxx.96 xxx.xxx.xxx.96 xxx.xxx.xxx.127

    xxx.xxx.xxx.65 xxx.xxx.xxx.95

    4

    5

    xxx.xxx.xxx.128

    xxx.xxx.xxx.160

    xxx.xxx.xxx.127

    xxx.xxx.xxx.158

    xxx.xxx.xxx.159

    xxx.xxx.xxx.191

    3 Bits Borrowed

    # of Usable Subnets

    Use the formula 2n

    - 2 where n is equal to the # of bits not borrowed. # of Usable Hosts

    224

    (2x2x2) - 2

    25 bits not borrowed

    - 2 (2x2x2x2x2) - 2

    32

    1st

    usable subnet range

    and increment value

    6

    25 bits not borrowed (2x2x2x2x2)

    # of Usable Hosts

    30

    1

    2

    xxx.xxx.xxx.32

    xxx.xxx.xxx.64

    # of Usable SubnetsUse the formula 2

    b- 2 where b is equal to the # of bits borrowed.

    23 bits borrowed

    - 2

    Host AddressUsable Subnet

    Range of Subnets

    Use the formula 2n

    where n is equal to the # of bits not borrowed.The result identifies the first "usable" subnet range will be and also identify the

    increments of the ranges.

    Starting Address Broadcast Address

    6 xxx.xxx.xxx.192 xxx.xxx.xxx.189 xxx.xxx.xxx.223

    xxx.xxx.xxx.34 xxx.xxx.xxx.63

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    Class C11111111 . 11111111 . 11111111 . 1 1 1 1 0 0 0 0

    128 + 64 + 32 + 16 + 0 + 0 + 0 + 0

    S.N.M. 255 . 255 . 255 .

    xxx.xxx.xxx.209

    xxx.xxx.xxx.127

    xxx.xxx.xxx.143

    xxx.xxx.xxx.159

    xxx.xxx.xxx.175

    xxx.xxx.xxx.191

    xxx.xxx.xxx.207

    xxx.xxx.xxx.223

    xxx.xxx.xxx.145

    xxx.xxx.xxx.161

    xxx.xxx.xxx.177

    xxx.xxx.xxx.193

    13 xxx.xxx.xxx.208

    9

    10

    xxx.xxx.xxx.112

    xxx.xxx.xxx.128

    xxx.xxx.xxx.144

    xxx.xxx.xxx.160

    xxx.xxx.xxx.176

    xxx.xxx.xxx.192

    11

    12

    xxx.xxx.xxx.31

    6 xxx.xxx.xxx.96 xxx.xxx.xxx.97

    xxx.xxx.xxx.17

    xxx.xxx.xxx.111

    xxx.xxx.xxx.65

    xxx.xxx.xxx.81

    xxx.xxx.xxx.79

    xxx.xxx.xxx.95

    7

    8

    xxx.xxx.xxx.113

    xxx.xxx.xxx.129

    4

    5

    xxx.xxx.xxx.64

    xxx.xxx.xxx.80

    xxx.xxx.xxx.47

    Usable Subnet

    1

    2

    xxx.xxx.xxx.16

    xxx.xxx.xxx.32

    Starting Address Broadcast Address

    # of Usable SubnetsUse the formula 2b - 2 where b is equal to the # of bits borrowed.

    24 bits borrowed

    - 2

    16

    1

    st

    usable subnet rangeand increment value

    14

    24 bits not borrowed (2x2x2x2)

    # of Usable Hosts14

    4 Bits Borrowed

    # of Usable Subnets

    Use the formula 2n

    - 2 where n is equal to the # of bits not borrowed. # of Usable Hosts

    240

    (2x2x2x2) - 2

    3 xxx.xxx.xxx.48 xxx.xxx.xxx.49 xxx.xxx.xxx.63

    24 bits not borrowed

    - 2 (2x2x2x2) - 2

    Host Address

    Use the formula 2n

    where n is equal to the # of bits not borrowed.The result identifies the first "usable" subnet range will be and also identify the

    increments of the ranges.Range of Subnets

    xxx.xxx.xxx.33

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    xxx.xxx.xxx.225 xxx.xxx.xxx.23914 xxx.xxx.xxx.224

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    Class C11111111 . 11111111 . 11111111 . 1 1 1 1 1 0 0 0

    128 + 64 + 32 + 16 + 8 + 0 + 0 + 0

    S.N.M. 255 . 255 . 255 .

    xxx.xxx.xxx.231

    xxx.xxx.xxx.239

    xxx.xxx.xxx.247

    xxx.xxx.xxx.215

    xxx.xxx.xxx.223

    xxx.xxx.xxx.241

    xxx.xxx.xxx.209

    xxx.xxx.xxx.217

    xxx.xxx.xxx.225

    xxx.xxx.xxx.233

    xxx.xxx.xxx.224

    xxx.xxx.xxx.232

    xxx.xxx.xxx.208

    xxx.xxx.xxx.216

    xxx.xxx.xxx.240

    27

    28

    29

    30

    26

    # of Usable Hosts6

    Use the formula 2n

    where n is equal to the # of bits not borrowed.

    The result identifies the first "usable" subnet range will be and also identify theincrements of the ranges.

    3 xxx.xxx.xxx.24 xxx.xxx.xxx.25 xxx.xxx.xxx.31

    23 bits not borrowed

    - 2 (2x2x2) - 2

    Host Address

    xxx.xxx.xxx.41

    xxx.xxx.xxx.39

    xxx.xxx.xxx.47

    xxx.xxx.xxx.9 xxx.xxx.xxx.15

    4

    5

    xxx.xxx.xxx.32

    xxx.xxx.xxx.40

    5 Bits Borrowed

    # of Usable Subnets

    Use the formula 2n

    - 2 where n is equal to the # of bits not borrowed. # of Usable Hosts

    248

    (2x2x2x2x2) - 2

    # of Usable SubnetsUse the formula 2

    b

    - 2 where b is equal to the # of bits borrowed.

    25 bits borrowed

    - 2

    8

    1st

    usable subnet range

    and increment value

    30

    23 bits not borrowed (2x2x2)

    xxx.xxx.xxx.33

    Range of Subnets

    xxx.xxx.xxx.17 xxx.xxx.xxx.23

    Usable Subnet

    1

    2

    xxx.xxx.xxx.8

    xxx.xxx.xxx.16

    Starting Address Broadcast Address

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    Class C11111111 . 11111111 . 11111111 . 1 1 1 1 1 1 0 0

    128 + 64 + 32 + 16 + 8 + 4 + 0 + 0

    S.N.M. 255 . 255 . 255 .

    Range of Subnets

    xxx.xxx.xxx.9 xxx.xxx.xxx.11

    Usable Subnet

    1

    2

    xxx.xxx.xxx.4

    xxx.xxx.xxx.8

    Starting Address Broadcast Address

    # of Usable SubnetsUse the formula 2

    b

    - 2 where b is equal to the # of bits borrowed.

    26 bits borrowed

    - 2

    4

    1st

    usable subnet range

    and increment value

    62

    22 bits not borrowed (2x2)

    xxx.xxx.xxx.17

    6 Bits Borrowed

    # of Usable Subnets

    Use the formula 2n

    - 2 where n is equal to the # of bits not borrowed. # of Usable Hosts

    252

    (2x2x2x2x2x2) - 2

    4

    5

    xxx.xxx.xxx.16

    xxx.xxx.xxx.20

    (2x2) - 2

    Host Address

    xxx.xxx.xxx.21

    xxx.xxx.xxx.19

    xxx.xxx.xxx.23

    xxx.xxx.xxx.5 xxx.xxx.xxx.7

    # of Usable Hosts2

    Use the formula 2n

    where n is equal to the # of bits not borrowed.

    The result identifies the first "usable" subnet range will be and also identify theincrements of the ranges.

    3 xxx.xxx.xxx.12 xxx.xxx.xxx.13 xxx.xxx.xxx.15

    22 bits not borrowed

    - 2

    58

    59

    60

    61

    62

    xxx.xxx.xxx.232

    xxx.xxx.xxx.236

    xxx.xxx.xxx.240

    xxx.xxx.xxx.244

    xxx.xxx.xxx.248

    xxx.xxx.xxx.233

    xxx.xxx.xxx.237

    xxx.xxx.xxx.241

    xxx.xxx.xxx.245

    xxx.xxx.xxx.249

    xxx.xxx.xxx.235

    xxx.xxx.xxx.239

    xxx.xxx.xxx.243

    xxx.xxx.xxx.247

    xxx.xxx.xxx.251

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    Class C# of Usable

    Subnets# of Usable

    HostsSubnet Ranges

    Multiply the bits

    borrowed - 2

    2b

    - 2

    Multiply the bits not

    borrowed - 2

    2n

    - 2

    Multiply the bits not borrowed

    2n

    2 .1100 0000 255.255.255.192 2 62xxx.xxx.xxx.64

    xxx.xxx.xxx.128

    3 .1110 0000 255.255.255.224 6 30

    xxx.xxx.xxx.32

    xxx.xxx.xxx.64xxx.xxx.xxx.96

    xxx.xxx.xxx.128

    xxx.xxx.xxx.160

    xxx.xxx.xxx.192

    4 .1111 0000 255.255.255.240 14 14

    xxx.xxx.xxx.16

    xxx.xxx.xxx.32

    5 .1111 1000 255.255.255.248 30 6

    xxx.xxx.xxx.8

    xxx.xxx.xxx.16

    6 .1111 1100 255.255.255.252 62 2

    xxx.xxx.xxx.4

    xxx.xxx.xxx.8

    Subnet Mask

    Add the binary value of the bits borrowed

    (128 + 64 + 32 + . . . )

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    # of Usable

    Subnets

    # of Usable

    Hosts

    Subnet

    Ranges

    Multiply the bits

    borrowed - 2

    2b

    - 2

    Multiply the bits not

    borrowed - 2

    2n

    - 2

    Multiply the bits not

    borrowed

    2n

    2 .1100 0000

    3 .1110 0000

    4 .1111 0000

    5 .1111 1000

    6 .1111 1100

    Subnet Mask

    Add the binary value of the bits borrowed

    (128 + 64 + 32 + . . . )

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    Class B# of Usable

    Subnets# of Usable

    HostsSubnet Ranges

    Multiply the bits

    borrowed - 2

    2b

    - 2

    Multiply the bits not

    borrowed - 2

    2n

    - 2

    Multiply the bits not borrowed

    2n

    2 .1100 0000.0000 0000 255.255.192.0 2 16,382xxx.xxx.64.0

    xxx.xxx.128.0

    3 .1110 0000.0000 0000 255.255.224.0 6 8,190

    xxx.xxx.32.0

    xxx.xxx.64.0

    xxx.xxx.96.0

    xxx.xxx.128.0

    xxx.xxx.160.0

    xxx.xxx.192.0

    4 .1111 0000.0000 0000 255.255.240.0 14 4,094

    xxx.xxx.16.0

    xxx.xxx.32.0

    5 .1111 1000.0000 0000 255.255.248.0 30 2,046xxx.xxx.8.0xxx.xxx.16.0

    6 .1111 1100.0000 0000 255.255.252.0 62 1,022

    xxx.xxx.4.0

    xxx.xxx.8.0

    Subnet Mask

    Add the binary value of the bits borrowed

    (128 + 64 + 32 + . . . )

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    7 .1111 1110.0000 0000 255.255.254.0 126 510

    xxx.xxx.2.0

    xxx.xxx.4.0

    8 .1111 1111.0000 0000 255.255.255.0 254 254

    xxx.xxx.1.0

    xxx.xxx.2.0

    9 .1111 1111.1000 0000 255.255.255.128 510 126

    xxx.xxx.0.128

    xxx.xxx.1.0

    xxx.xxx.1.128

    10 .1111 1111.1100 0000 255.255.255.192 1,022 62

    xxx.xxx.0.64

    xxx.xxx.0.128

    xxx.xxx.0.192

    xxx.xxx.1.0

    xxx.xxx.1.64

    11 .1111 1111.1110 0000 255.255.255.224 2,046 30

    xxx.xxx.0.32

    xxx.xxx.0.64

    ...

    xxx.xxx.0.224

    xxx.xxx.1.0

    xxx.xxx.1.32

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    12 .1111 1111.1111 0000 255.255.255.240 4,094 14

    xxx.xxx.0.16

    xxx.xxx.0.32...

    xxx.xxx.0.240

    xxx.xxx.1.0

    xxx.xxx.1.16

    13 .1111 1111.1111 1000 255.255.255.248 8,190 6

    xxx.xxx.0.8

    xxx.xxx.0.16

    ...

    xxx.xxx.0.248

    xxx.xxx.1.0

    xxx.xxx.1.8

    14 .1111 1111.1111 1100 255.255.255.252 16,382 2

    xxx.xxx.0.4

    xxx.xxx.0.8

    ...xxx.xxx.0.252

    xxx.xxx.1.0

    xxx.xxx.1.4

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    # of Usable

    Subnets

    # of Usable

    Hosts

    Subnet

    RangesMultiply the bits

    borrowed - 2

    2b - 2

    Multiply the bits not

    borrowed - 2

    2n - 2

    Multiply the bits not

    borrowed

    2n

    2 1100 0000.0000 0000

    3 1110 0000.0000 0000

    4 1111 0000.0000 0000

    5 1111 1000.0000 0000

    6 1111 1100.0000 0000

    7 1111 1110.0000 0000

    8 1111 1111.0000 0000

    9 1111 1111.1000 0000

    10 1111 1111.1100 0000

    11 1111 1111.1110 0000

    Subnet Mask

    Add the binary value of the bits borrowed

    (128 + 64 + 32 + . . . )

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    12 1111 1111.1111 0000

    13 1111 1111.1111 1000

    14 1111 1111.1111 1100

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    Class C# of Usable

    Subnets# of Usable

    HostsSubnet Ranges

    Multiply the bits

    borrowed - 2

    2b

    - 2

    Multiply the bits not

    borrowed - 2

    2n

    - 2

    Multiply the bits not borrowed

    2n

    2 .1100 0000 /26 255.255.255.192 2 62xxx.xxx.xxx.64

    xxx.xxx.xxx.128

    3 .1110 0000 /27 255.255.255.224 6 30

    xxx.xxx.xxx.32

    xxx.xxx.xxx.64xxx.xxx.xxx.96

    xxx.xxx.xxx.128

    xxx.xxx.xxx.160

    xxx.xxx.xxx.192

    4 .1111 0000 /28 255.255.255.240 14 14

    xxx.xxx.xxx.16

    xxx.xxx.xxx.32

    5 .1111 1000 /29 255.255.255.248 30 6

    xxx.xxx.xxx.8

    xxx.xxx.xxx.16

    6 .1111 1100 /30 255.255.255.252 62 2

    xxx.xxx.xxx.4

    xxx.xxx.xxx.8

    Subnet Mask

    Add the binary value of the bits borrowed

    (128 + 64 + 32 + . . . )


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