Must Remind (Keep in Mind)
128 | 1 0 0 0 0 0 0 0 (i.e. 1 Bit ON and 7 OFF)
192 | 1 1 0 0 0 0 0 0 (i.e. 2 Bits ON and 6 OFF)
224 | 1 1 1 0 0 0 0 0 (i.e. 3 Bits ON and 5 OFF)
240 | 1 1 1 1 0 0 0 0 (i.e. 4 Bits ON and 4 OFF)
248 | 1 1 1 1 1 0 0 0 (i.e. 5 Bits ON and 3 OFF)
252 | 1 1 1 1 1 1 0 0 (i.e. 6 Bits ON and 2 OFF)
254 | 1 1 1 1 1 1 1 0 (i.e. 7 Bits ON and 1 OFF)
255 | 1 1 1 1 1 1 1 1 (i.e. 8 Bits ON and 0 OFF)
PROBLEM 5.
172.16.0.0 (Network Address)
255.255.248.0 (/21)
Network = 2^5 = 32
Hosts = 2^11 - 2 = 2046 ( 3 bits in 3rd octet and 8 bits in 4th octet)
valid subnets = 256-248= 8
Block Size = 0 ,8,16,24,32,40,48,56,64,72,80,88,96,104,112,120,128,136,144,152,160,168,176 ,184,192,200,208,216,224,232,240
NETWORK 1
172.16.0.0 (Network ID)
172.16.0.1 (First Host)
172.16.0.2
172.16.0.3
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.
.
172.16.7.252
172.16.7.253
172.16.7.254 (Last Host)
172.16.7.255 (Broadcast ID)
MUST READ
when the address 0.255 after that 3rd octet will be started from 1.0 then 1.1, 1.2, 1.3 similarly address reach 1.255 3rd octet will start From 2.0 Similarly all the address will allocate in a same way. ( For Understanding the Procedure)
NETWORK 2
172.16.8.0 (Network ID)
172.16.8.1 (First Host)
172.16.8.2
172.16.8.3
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.
.
172.16.15.252
172.16.15.253
172.16.15.254 (Last Host)
172.16.15.255 (Broadcast ID)
NETWORK 3
172.16.16.0 (Network ID)
172.16.16.1 (First Host)
172.16.16.2
172.16.16.3
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.
.
172.16.23.252
172.16.23.253
172.16.23.254 (Last Host)
172.16.23.255 (Broadcast ID)
NETWORK 4
172.16.24.0 (Network ID)
172.16.24.1 (First Host)
172.16.24.2
172.16.24.3
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.
.
172.16.31.252
172.16.31.253
172.16.31.254 (Last Host)
NETWORK 5
172.16.32.0 (Network ID)
172.16.32.1 (First Host)
172.16.32.2
172.16.32.3
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.
.
172.16.39.252
172.16.39.253
172.16.39.254 (Last Host)
NETWORK 6
172.16.40.0 (Network ID)
172.16.40.1 (First Host)
172.16.40.2
172.16.40.3
.
.
.
172.16.47.252
172.16.47.253
172.16.47.254 (Last Host)
NETWORK 7
172.16.48.0 (Network ID)
172.16.48.1 (First Host)
172.16.48.2
172.16.48.3
.
.
.
172.16.55.252
172.16.55.253
172.16.55.254 (Last Host)
NETWORK 8
172.16.56.0 (Network ID)
172.16.56.1 (First Host)
172.16.56.2
172.16.56.3
.
.
.
172.16.63.252
172.16.63.253
172.16.63.254 (Last Host)
NETWORK 9
172.16.64.0 (Network ID)
172.16.64.1 (First Host)
172.16.64.2
172.16.64.3
.
.
.
172.16.71.252
172.16.71.253
172.16.71.254 (Last Host)
NETWORK 10
172.16.72.0 (Network ID)
172.16.72.1 (First Host)
172.16.72.2
172.16.72.3
.
.
.
172.16.739.252
172.16.79.253
172.16.79.254 (Last Host)
NETWORK 11
172.16.80.0 (Network ID)
172.16.80.1 (First Host)
172.16.80.2
172.16.80.3
.
.
.
172.16.87.252
172.16.87.253
172.16.87.254 (Last Host)
NETWORK 12
172.16.88.0 (Network ID)
172.16.88.1 (First Host)
172.16.88.2
172.16.88.3
.
.
.
172.16.95.252
172.16.95.253
172.16.95.254 (Last Host)
NETWORK 13
172.16.96.0 (Network ID)
172.16.96.1 (First Host)
172.16.96.2
172.16.96.3
.
.
.
172.16.103.252
172.16.103.253
172.16.103.254 (Last Host)
NETWORK 14
172.16.104.0 (Network ID)
172.16.104.1 (First Host)
172.16.104.2
172.16.104.3
.
.
.
172.16.111.252
172.16.111.253
172.16.111.254 (Last Host)
NETWORK 15
172.16.112.0 (Network ID)
172.16.112.1 (First Host)
172.16.112.2
172.16.112.3
.
.
.
172.16.119.252
172.16.119.253
172.16.119.254 (Last Host)
NETWORK 16
172.16.120.0 (Network ID)
172.16.120.1 (First Host)
172.16.120.2
172.16.120.3
.
.
.
172.16.127.252
172.16.127.253
172.16.127.254 (Last Host)
NETWORK 17
172.16.128.0 (Network ID)
172.16.128.1 (First Host)
172.16.128.2
172.16.128.3
.
.
.
172.16.135.252
172.16.135.253
172.16.135.254 (Last Host)
NETWORK 18
172.16.136.0 (Network ID)
172.16.136.1 (First Host)
172.16.136.2
172.16.136.3
.
.
.
172.16.143.252
172.16.143.253
172.16.143.254 (Last Host)
NETWORK 19
172.16.144.0 (Network ID)
172.16.144.1 (First Host)
172.16.144.2
172.16.144.3
.
.
.
172.16.151.252
172.16.151.253
172.16.151.254 (Last Host)
NETWORK 20
172.16.152.0 (Network ID)
172.16.152.1 (First Host)
172.16.152.2
172.16.152.3
.
.
.
172.16.159.252
172.16.159.253
172.16.159.254 (Last Host)
NETWORK 21
172.16.160.0 (Network ID)
172.16.160.1 (First Host)
172.16.160.2
172.16.160.3
.
.
.
172.16.167.252
172.16.167.253
172.16.167.254 (Last Host)
NETWORK 22
172.16.168.0 (Network ID)
172.16.168.1 (First Host)
172.16.168.2
172.16.168.3
.
.
.
172.16.175.252
172.16.175.253
172.16.175.254 (Last Host)
NETWORK 23
172.16.176.0 (Network ID)
172.16.176.1 (First Host)
172.16.176.2
172.16.176.3
.
.
.
172.16.183.252
172.16.183.253
172.16.183.254 (Last Host)
NETWORK 24
172.16.184.0 (Network ID)
172.16.184.1 (First Host)
172.16.184.2
172.16.184.3
.
.
.
172.16.191.252
172.16.191.253
172.16.191.254 (Last Host)
NETWORK 25
172.16.192.0 (Network ID)
172.16.192.1 (First Host)
172.16.192.2
172.16.192.3
.
.
.
172.16.199.252
172.16.199.253
172.16.199.254 (Last Host)
NETWORK 26
172.16.200.0 (Network ID)
172.16.200.1 (First Host)
172.16.200.2
172.16.200.3
.
.
.
172.16.207.252
172.16.207.253
172.16.207.254 (Last Host)
NETWORK 27
172.16.208.0 (Network ID)
172.16.208.1 (First Host)
172.16.208.2
172.16.208.3
.
.
.
172.16.215.252
172.16.215.253
172.16.215.254 (Last Host)
NETWORK 28
172.16.216.0 (Network ID)
172.16.216.1 (First Host)
172.16.216.2
172.16.216.3
.
.
.
172.16.223.252
172.16.223.253
172.16.223.254 (Last Host)
NETWORK 29
172.16.224.0 (Network ID)
172.16.224.1 (First Host)
172.16.224.2
172.16.224.3
.
.
.
172.16.231.252
172.16.231.253
172.16.231.254 (Last Host)
NETWORK 30
172.16.232.0 (Network ID)
172.16.232.1 (First Host)
172.16.232.2
172.16.232.3
.
.
.
172.16.239.252
172.16.239.253
172.16.239.254 (Last Host)
NETWORK 31
172.16.240.0 (Network ID)
172.16.240.1 (First Host)
172.16.240.2
172.16.240.3
.
.
.
172.16.247.252
172.16.247.253
172.16.247.254 (Last Host)
NETWORK 32
172.16.248.0 (Network ID)
172.16.248.1 (First Host)
172.16.248.2
172.16.248.3
.
.
.
172.16.255.252
172.16.255.253
172.16.255.254 (Last Host)
