In this video, Bill Ferguson explores the methods that were used when the Internet was first formed and how changes have been made over the years to use IP addresses in a more efficient manner.
- [Bill] When the internet was first developed,…the goal was to provide different types of addresses.…We needed addresses that would work…for organizations that were going to have…potentially millions of hosts.…Those would be internet service providers…and maybe large government organizations.…But we also needed addresses for medium size companies…that could potentially have thousands of hosts.…In addition, we needed addresses for smaller businesses…that would only have hundreds of hosts.…
Finally, there were addresses needed…for network diagnostics and testing.…So when the designers put everything together…they wanted to have specific addresses…and specific address types for all of these categories.…And the rest and how they put it together is history.…
Discover how IP addresses are constructed and how to understand them better by relating them to a picture rather than converting binary numbers or memorizing charts. Learn the benefits that subnetting in your head provides in every aspect of IT networking, including routing protocols, access control lists, and network address translation. Then walk through Bill's four-step method, which leverages the rules that were used to create the original classful IP addressing schemes. Using this method, students can learn to "see" the IP addresses for each subnet. Watch the technique in action, and then practice what you've learned using the audio guides in chapter five, which provide auditory cues as you subnet in your head.
- The benefits of subnetting
- Class A, B, and C IP addressing
- The four-step subnetting method
- Troubleshooting IP topologies and IP host address ranges
- Audio cues for the four-step method