Introduction to Network Layer Logical Addressing
- Communication at the network layer is host-to-host (computer-to-computer).
- A computer somewhere in the world needs to communicate with another computer somewhere else in the world.
- For this communication, we need a global addressing scheme, called “logical addressing”
- Today, IP addresses are used to provide logical addresses in the network layer of the TCP/IP protocol suite.
- The Internet addresses are 32 bits in length; this gives us a maximum of 232 addresses.
- These addresses are referred to as IPv4 (IP version 4) addresses or simply IP addresses.
The need for more addresses, in addition to other concerns about the IP layer, m...