Exercises

• Create a network with
  • 8 subnets of size 500 each
    network
192.168.0.0/20
subnets:
192.168.0.0/23
192.168.2.0/23
192.168.4.0/23
192.168.6.0/23
192.168.8.0/23
192.168.10.0/23
192.168.12.0/23
192.168.14.0/23
  • 6 subnets of size 300 each
    network: 10.10.0.0/20
subnets:
10.10.0.0/23
10.10.2.0/23
10.10.4.0/23
10.10.6.0/23
10.10.8.0/23
10.10.10.0/23
  • 4 subnets of size 2 lakh devices each
    “`
    2 ^ v ~ = 2 lakh

  fixed = 14
  variable = 18

  ip: 10.0.0.0/14
  subnet SM: 11111111.11111100.00000000.000000000
  network SM: 11111111.1111yy00.00000000.000000000

           10.0.0.0/14
           10.4.0.0/14
           10.8.0.0/14
           10.12.0.0/14
  

  “`
  * Create a 8 network with size 1000

2^v ~ = 1000
variable = 10
fixed = 22
Subnet  SM: 11111111.11111111.11111100.00000000

yyy00
00100
01000
ip: 172.16.0.0/22
ip: 172.16.4.0/22
ip: 172.16.8.0/22
ip: 172.16.12.0/22
ip: 172.16.16.0/22
ip: 172.16.20.0/22
ip: 172.16.24.0/22
ip: 172.16.28.0/22

Router

• Router is a device to forward packets from one network to another
• Router has a route table which will have rules depending on destination address
• Note: When we are writing rules to restrict network traffic we can filter only on network id’s

10.0.1.0/24 => Any packet with network id 10.0.1 (10.0.1.x)
0.0.0.0/0 => any ip address
192.168.0.10/32 => Specific ip address