AWS Classroom Series – 29/Oct/2020

Problem

• Try to create a private network for below scenario
• We have 16 flats for each block. Each flat needs to connect to 250 devices. Each block will need 8 bits for host id. so subnet mask will be 255.255.255.0
• QT Network: 10.10.0.0/16
• Block A:
  • Ground Floor (Every floor will be a subnet with each network in it as subnet)
    • Flat AG1:
      • ip range: 10.10.0.0/24
      • sm: 255.255.255.0
    • Flat AG2:
      • ip: 10.10.1.0/24
    • Flat AG3:
      • ip: 10.10.2.0/24
  • Flat AG4:
    • ip: 10.10.3.0/24
  • Ground floor subnet : 10.10.0.0/22 = Ground floor
  • First Floor:
    • AF1: ip 10.10.4.0/24 => 255.255.255.0
    • AF2: ip 10.10.5.0/24
    • AF3: ip 10.10.6.0/24
    • AF2: ip 10.10.7.0/24
    • First floor subnet: 10.10.4.0/22
  • Second Floor:
    • AS1: ip 10.10.8.0/24
    • AS2: ip 10.10.9.0/24
    • AS3: ip 10.10.10.0/24
    • AS4: ip 10.10.11.0/24
    • SecondFloor: 10.10.8.0/22 => 11111111.11111111.11111100.00000000 => 255.255.252.0
  • Third floor: 10.10.12.0/22
  • Fourth Floor: 10.10.16.0/22

Number of Devices that can be connected to a network

• My cidr range: 192.168.0.0/24 => 2 ^ (32-24) – 2 => 2^8 -2 => 254
  • all zeros => Network id
  • all ones => broadcast id
• CIDR range: 192.168.0.0/22 => 2 ^ (32-22) -2 => 2^10 -2 => 1024-2 => 1022
• General formula => (2^n)-2 where n is bits in host id

Next Steps

1. Create our first private network on AWS and we will understand AWS Networking Terminologies.