Subnet Mask Construction

• Class B Address Info

  • 129.24.0.0 to 129.24.255.255
  • netid = 129.24.
  • hostid = 16 bits (i.e. 65,536 potential IP addresses)

• Subnet Mask Assumptions:

  • netid bits = 16
  • potential hostid bits = 16
  • If we divide the address space into 32 subnets we will have 2048 hostids or IP addresses per subnet

Previous slide

Next slide

Back to first slide

View graphic version