Priority based QoS on residential link

RouterOS Beginner Basics
1

I was recently told that priority based QoS doesn’t work with residential modems, cable or DSL, with reason stated that such modems all have small buffer, and so it doesn’t matter what packet arrives first, if modem’s buffer is already full even the highest priority packets will have to wait - which means uplink is saturated for such latency critical applications as VoIP. The conclusion was that on residential links the only QoS that works is limiting of transfer rate.

I just want to know your opinion on this - is this correct?

2

Nobody is in typing mood, or there’s anything wrong with the questions? :slight_smile:

3

this is the same with any connection really… you have to set a maximum before priority will work. if your already at the max then priority wont matter because the device downstream will just drop it however it pleases anyhow.

4

Thanks!