AWS Classroom Series – 29/Oct/2020

Problem

  • Try to create a private network for below scenario Preview
  • 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.

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