If you can picture all connections coming into a hub, the packet travels through every port. With a switch, it can read the MAC info, or in the case of a Layer 3 switch, the IP address info, and it will skip over any ports that do not need the packet and switch it over to the port that does through the switching fabric.
Related Q&A from Carrie Higbie, Data Center Networking Expert
With a growing number of online resources, is the Magic Quadrant still the No. 1 source of vendor information?continue reading
To view networking infrastructure and project management expert Carrie Higbie's latest advice, see her Public Profile on the IT Knowledge Exchange.continue reading
Find out the industry standards for twisted pair cable length in this response from network infrastructure expert Carrie Higbie.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.