What are the differences between physical and logical addressing?
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
The OSI model is a good place to start to learn more about the differences between physical and logical addressing. Think of the physical address as the 48-bit MAC address that manufacturers encode in their network interface cards (NICs). This type of address is unique, referred to as the Ethernet or hardware address, and cannot be changed but can be spoofed. The MAC or Ethernet address is associated with Layer 2 (data Link) of the OSI Model. The logical address is a 32-bit IP address that is not embedded in the network card but it is assigned to it for the purpose of routing between networks. This type of address operates at Layer 3 (network) of the OSI Model. The Internet Protocol (IP), in combination with Transmission Control Protocol (TCP), forms the TCP/IP suite, which is the de facto protocol (i.e., universal computer language) that connects the network of networks – that is, the Internet. The OSI Model is a standard developed by the International Standards Organization (OSI) to provide a blueprint for conformity for software development and network communications.
Dig Deeper on IP Networking
Related Q&A from Luis Medina
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.