Summary
Classful IP addressing
IPv4 addresses have 2 parts:
-Network portion found on left side of an IP
address
-Host portion found on right side of an IP
address
Class A, B, & C addresses were designed to provide IP
addresses for different sized organizations
The class of an IP address is determined by the decimal
value found in the 1st octet
IP addresses are running out so the use of Classless Inter
Domain Routing (CIDR) and Variable Length Subnet Mask
(VLSM) are used to try and conserve address space