Internet Video Series, Part 2
Episode 18, Segment 01 of 06
Ethernet Delivers the Internet Part 2: The Address Resolution Protocol ( ARP )
Computers with Internet access generally use at least - TWO - different addressing systems at the same time. Usually this includes:
1 of 2: an Ethernet Address (functioning at layer 2 of the OSI reference model), and
2 of 2: an IP address (functioning at layer 3 of the OSI reference model).
Ethernet addresses are assigned when an Ethernet interface is manufactured, before any relationship is established with you or your network. Accordingly, the various Ethernet addresses found within different computers in your home or small office may appear to have no relationship with one another. You can learn more about Ethernet and Ethernet addressing from the - "Ethernet Series" - of movies at AskMisterWizard.com, where you will find at least six short movies are always available for downloading.
IP addresses, on the other hand, are assigned in a coordinated system as your IP network grows, ensuring that adjacent computers within your local network have similar addresses.
Internet Addresses - are IP addresses that are coordinated globally, and the structure of an Internet address helps computers and routers to locate one another anywhere in the world. In this movie, we will use the vocabulary of the well-known " OSI Reference Model " to describe Ethernet addresses and IP addresses, and you will need to understand the basics of both. You can learn more about IP and Internet addresses from the extensive - "Internet Series" - of movies at AskMisterWizard.com.
You can learn more about the OSI reference model (and the resulting - "layers" - and vocabulary) from the AskMisterWizard.com movie entitled - "The 7-Layer Vocabulary of Modern Internetworking".