Quality of Service

Imagine driving down a three lane highway at a decent (legal) speed. It’s a beautiful day with the sun high in the sky and a nice cool wind coming in through the window. All is going well. In just a few minutes you should be at your destination. Suddenly, all you see in front of you are red lights. You roll to a stop and realize that ahead of you is construction, converting the three lane highway into a single lane snooze-fest. The construction bottleneck has slowed traffic down to a crawl. Hopefully other drivers will let you in as you inch towards the next lane. If only there was a way to just jump to the front of the lane. Well, in this scenario not so much. However, if this was a network full of layer 2 and layer 3 devices, we would have some ways to organize the traffic in a way that the important traffic (cars) keep moving efficiently through the bottlenecks. Continue reading Quality of Service