how to setup the QoS feature in router

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thebobby1979

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Feb 12, 2012
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I setup QoS in my router but every time i try to set it up i wind up loosing internet connection or my netflix loads slow so i don't know if i'm doing anything right or wrong can someone tell what i'm doing wrong or tell me what and how to set it up cause even if i do set it up and i have internet connection it's a fuzzy or grainy picture. and i have another question do they have a calculator online used for calculating QoS percentage or to tell you how much kbps?
 
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Really to make it work the ISP would have to do it, there is little you can do if the ISP drops part of your netflix traffic it is just gone by the time your router knows anything.

DD-WRT at least has a chance to do something but you need to configure it backward to what you are thinking. You do not want to somehow favor important traffic you want to limit unimportant traffic.

So lets say you want to keep 8m of your 14m download bandwidth for just netflix. What you do is find a way to identify the traffic either by ip or port or even the PC that is requesting it. Put this in a group called high or whatever. All other traffic I think goes into a group called either low or default. What you now do it put a download limit of 6m...
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thebobby1979

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I have a E2500 cisco router flashed dd-wrt latest version. my results when i run the test is at download speed are at 14.9 mbps and upload speed 6.09 mbps. in your experience it doesn't work i heard it was suppose to make it to were you can save a specific amount of bandwidth for a app such as netflix or games does it not really help and am i wasting my time?
 
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bill001g

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Really to make it work the ISP would have to do it, there is little you can do if the ISP drops part of your netflix traffic it is just gone by the time your router knows anything.

DD-WRT at least has a chance to do something but you need to configure it backward to what you are thinking. You do not want to somehow favor important traffic you want to limit unimportant traffic.

So lets say you want to keep 8m of your 14m download bandwidth for just netflix. What you do is find a way to identify the traffic either by ip or port or even the PC that is requesting it. Put this in a group called high or whatever. All other traffic I think goes into a group called either low or default. What you now do it put a download limit of 6m on this low group. This in "theory" leaves 8m for your netflix.

There are a number of issues. First there is no way to be sure you always get the 14m peak rate you test at so you must set the "other" traffic limit much lower than you really need to be sure you still get enough if say the peak rate drops to 10m. Next you are actually just dropping traffic that exceeds the limit BUT it has already eaten up the bandwidth to get to your router. The only reason this even partially works is many applications detect these errors and slow down. Some application (bit torrent for example) tend to not be limited as well and something that truly streams data like a game program ignores it...at least until it totally disconnects.

The large down side to doing this is this limit stays in place even if netflix is not using the bandwidth so it is wasted.

 
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