Binary Lesson 6 Classful Subnetting /24, /25, and /26 · 2013-09-25 · Class C ! Class C address:...
Transcript of Binary Lesson 6 Classful Subnetting /24, /25, and /26 · 2013-09-25 · Class C ! Class C address:...
![Page 1: Binary Lesson 6 Classful Subnetting /24, /25, and /26 · 2013-09-25 · Class C ! Class C address: 192.168.1.10 /24 ! The subnet mask is 255.255.255.0 The network address is 192.168.1.0](https://reader034.fdocuments.net/reader034/viewer/2022042207/5eaa516d732b4f1f3b60611d/html5/thumbnails/1.jpg)
Binary Lesson 6 Classful
Subnetting /24, /25, and /26"
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Class C /24
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Class C Number of Addresses
n Class C address: 192.168.1.0 /24 n 24 Network bits, 8 Host bits
n Network: 192.168.1.0 n Broadcast: 192.168.1.255 n Usable: 192.168.1.1 – 192.168.1.254
n 254 usable addresses n 256 – 2 n 2^8 - 2
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Class C
n Class C address: 192.168.1.10 /24 n The subnet mask is 255.255.255.0 n The network address is 192.168.1.0 n The broadcast address is 192.168.1.255 n In Binary: IP: 11000000 10101000 00000001 00001010 Sub Msk: 11111111 11111111 11111111 00000000 Net Addr: 11000000 10101000 00000001 00000000 Brdc Add: 11000000 10101000 00000001 11111111
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Whole Square is a /24 network
n Contains 256 addresses, only the first & last shown
.0 192.168.1.0/24 .255
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Dividing a Class C into Two /25 Subnets
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Divided into Two /25 Subnets
.0 192.168.1.0/25 .127 .128 192.168.1.128/25 .255
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192.168.1.0 /25
n You can split a class C in half with a /25 n IP: 192.168.1.10 /25 n Subnet Mask: 255.255.255.128 n Network: 192.168.1.0
IP: 11000000 10101000 00000001 00001010 Sub Msk: 11111111 11111111 11111111 10000000 Net Addr: 11000000 10101000 00000001 00000000 NETWORK HOST BITS BITS
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192.168.1.0 /25
n There are only 128 addresses in a /25 block n Network: 192.168.1.0 /25 n 1st Usable: 192.168.1.1 n Last Usable: 192.168.1.126 n Broadcast: 192.168.1.127
Net Addr: 11000000 10101000 00000001 00000000 First Use: 11000000 10101000 00000001 00000001 Last Use: 11000000 10101000 00000001 01111110 Broadcst: 11000000 10101000 00000001 01111111
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192.168.1.128 /25
n There are only 128 addresses in a /25 block n Network: 192.168.1.128 /25 n 1st Usable: 192.168.1.129 n Last Usable: 192.168.1.254 n Broadcast: 192.168.1.255
Net Addr: 11000000 10101000 00000001 10000000 First Use: 11000000 10101000 00000001 10000001 Last Use: 11000000 10101000 00000001 11111110 Broadcst: 11000000 10101000 00000001 11111111
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Dividing a Class C into Four /26 Subnets
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Divided into Four /26 Subnets
.0 .64
192.168.1.0/26 192.168.1.64/26 .63 .127 .128 .192
192.168.1.128/26 192.168.1.192/26 .191 .255
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192.168.1.0 /26
n There are only 64 addresses in a /26 block n Network: 192.168.1.0 /26 n 1st Usable: 192.168.1.1 n Last Usable: 192.168.1.62 n Broadcast: 192.168.1.63
Net Addr: 11000000 10101000 00000001 00000000 Sub Msk: 11111111 11111111 11111111 11000000 First Use: 11000000 10101000 00000001 00000001 Last Use: 11000000 10101000 00000001 00111110 Broadcst: 11000000 10101000 00000001 00111111
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192.168.1.64 /26
n There are only 64 addresses in a /26 block n Network: 192.168.1.64 /26 n 1st Usable: 192.168.1.65 n Last Usable: 192.168.1.126 n Broadcast: 192.168.1.127
Net Addr: 11000000 10101000 00000001 01000000 Sub Msk: 11111111 11111111 11111111 11000000 First Use: 11000000 10101000 00000001 01000001 Last Use: 11000000 10101000 00000001 01111110 Broadcst: 11000000 10101000 00000001 01111111
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192.168.1.128 /26
n There are only 64 addresses in a /26 block n Network: 192.168.1.128 /26 n 1st Usable: 192.168.1.129 n Last Usable: 192.168.1.190 n Broadcast: 192.168.1.191
Net Addr: 11000000 10101000 00000001 10000000 Sub Msk: 11111111 11111111 11111111 11000000 First Use: 11000000 10101000 00000001 10000001 Last Use: 11000000 10101000 00000001 10111110 Broadcst: 11000000 10101000 00000001 10111111
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192.168.1.192 /26
n There are only 64 addresses in a /26 block n Network: 192.168.1.192 /26 n 1st Usable: 192.168.1.193 n Last Usable: 192.168.1.254 n Broadcast: 192.168.1.255
Net Addr: 11000000 10101000 00000001 11000000 Sub Msk: 11111111 11111111 11111111 11000000 First Use: 11000000 10101000 00000001 11000001 Last Use: 11000000 10101000 00000001 11111110 Broadcst: 11000000 10101000 00000001 11111111