Introduction to QoS (Quality of Service)

Hello Rene.

You’re right. I am studying for my ENCOR exam so I won’t go any further than this. If I ever get to work with QoS in production, I’ll probably learn most of the “secrets” that I didn’t know about until now.

Thank you and Laz for taking your time to discuss this with me.

I have one more question. What exactly is the difference between speed and bandwidth? I understand that speed is how fast the link can transmit the data while bandwidth is its maximum capacity. The thing is, these two are always the same value, so I tend to mix them a lot.

If that’s the case, I am not quite sure if I understand what speed means here. If we have a link with a speed of 2 gbits, would it transmit data (lets say, 100 mbits) faster than a 1 gbit link? Or what if we (let’s use our imagination here for a second) had a link with a BW of 1000 mbits but the speed would only be 500 mbit/s? The link’s capacity would not be reached but it still wouldn’t be able to transmit all 1000 mbits within a second, right?

That’s all, thank you.

David