subnetting.md

Subnetting

What is an IP?

Unique address that machines have.

192 . 168 . 1 . 10 1100000.10101000.00000001.00001010

Global and Private IPs

Private or Local

192.168.1.10/24

Public or Global

168.173.70.134/29

Classes

Public

• A - 0-127
• B - 128-191
• C - 192-223
• D - 224 - Multicast

Private

• A - 10.0.0.0
• B - 172.16.0.0
• C - 192.168.0.0

What is a subnet mask

Subnet - a sub network in your network

Subnet Mask

Specifies what is the network address and the host address

[ 172.134.7.10 ]/[ 27 ]

Subnet mask:

• 11111111.11111111.11111111.11100000
• 255 . 255 . 255 . 224

Subnetting

168.173.70.134/29

• What is the subnet mask?
  • 11111111.11111111.11111111.11111000
  • 255 . 255 . 255 . 248
• What is the network IP
  • 10101000.10101101.01000110.10000110
  • 10101000.10101101.01000110.10000000
  • 168 . 173 . 70 . 128
• First Host IP? 168.173.70.129
• Last Host IP? 168.173.70.134
• Broadcast IP? 168.173.70.135

153.34.173.242/17

• Subnet Mask
  • 11111111.11111111.10000000.00000000
  • 255 . 255 . 128 . 0
• Network IP
  • 10011001.00100010.10101101.11110010
  • 10011001.00100010.10000000.00000000
  • 153 . 34 . 128 . 0
• First Host IP - 153.34.128.1
• Last Host IP - 153.34.255.254
• Broadcast IP - 153.34.255.255