AWS Classroomnotes 29/Jan/2023

Networking Basics

• There are two types of networks
  • Public Network:
    • This network is accessible over internet
  • Private Network
    • This the network for intranet (internal) usage
    • Private networks have ip address ranges
      • 10.0.0.0 to 10.255.255.255
      • 172.16.0.0 to 172.31.255.255
      • 192.168.0.0 to 192.168.255.255
• Through out this course we will be dealing with private networks
• As per what we have learnt so far we have following subnet masks that can be used to create a network
  • 255.255.255.0
  • 255.255.0.0
  • 255.0.0.0

Designing Networks

Create a network which can have 200 devices connected to it

• Solution

private network ranges
10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255

Subnet Masks
    255.255.255.0
    255.255.0.0
    255.0.0.0

SM => 255.255.255.0 => 1 (Variable) => 8 bits => 2^8 =>256
   => 255.255.0.0 => 2 octets => 16 bits =>2^16 => 65536
   => 255.0.0.0 => 3 Octects => 24 bits => 2^24 => 16777216

Size => 200


Possibilities
IP = 192.168.0.x
SM = 255.255.255.0

IP = 10.0.0.x
SM = 255.255.255.0

IP = 172.16.0.x
SM = 255.255.255.0

IP = 10.100.101.x
SM = 255.255.255.0

IP = 172.18.10.x
SM = 255.255.255.0

Create a network which can have 1000 devices connected to it

• Solution

private network ranges
10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255

Subnet Masks
    255.255.255.0
    255.255.0.0
    255.0.0.0

SM => 255.255.255.0 => 1 (Variable) => 8 bits => 2^8 =>256
   => 255.255.0.0 => 2 octets => 16 bits =>2^16 => 65536
   => 255.0.0.0 => 3 Octects => 24 bits => 2^24 => 16777216

Size => 1000

Possibilites

IP: 192.168.x.x
SM = 255.255.0.0

IP: 10.10.x.x

IP: 172.16.x.x

Create a network which can have 100000 (1 lakh) devices connected to it

• Solution

private network ranges
10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255

Subnet Masks
    255.255.255.0
    255.255.0.0
    255.0.0.0

SM => 255.255.255.0 => 1 (Variable) => 8 bits => 2^8 =>256
   => 255.255.0.0 => 2 octets => 16 bits =>2^16 => 65536
   => 255.0.0.0 => 3 Octects => 24 bits => 2^24 => 16777216

Size => 1,00,000

IP => 10.x.x.x
SM => 255.0.0.0

IP Addressing

• There are two ways of IP Addressing
  • Classful Networking
    
  • Class less Networking: In this case subnet mask is viewed as binary
• Then each subnet will have following possibilities

xxxxxxxx
11111111  => 255
11111110  => 254
11111100  => 252
11111000  => 248
11110000  => 240
11100000  => 224
11000000  => 192
10000000  => 128

• Note: We will re-discuss the above topics tomorrow