QoS on Draytek 2820Vn

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8 Jul 2004
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London
Hullo everyone,

I am trying to set up a working QoS policy on the Draytek 2820Vn but failing miserably. For the sake of explaining, I will include the following bits of info. IP range has been adjusted.

Available Bandwidth: 8Mbit down, 448k up.
Servers: 10.x.x.200-10.x.x.253
Clients: 10.x.x.100-10.x.x.195

So lets assume a client PC is absolutely hammering the connection with a huge download using up the full 8Mbit. I want the QoS set up so that even if any of the client PC's are doing such a thing, the access to the internet for the rest is unaffected including the servers.

How can I set up such a policy? I have read the manual a good few times and called upon the powers of google but it doesn't seem to be getting me anywhere.

From what I can understand, I need to set up classes which contain different services. But what is a "class"? Is it a container or a way or prioritizing different segments within a network? Then there is the "Reserved Bandwidth Ratio" which baffles me completely as it doesn't seem to do anything no matter how I adjust it.

A few screenshots of what I have at the min:


Main QoS Setup


Reserved Bandwidth Ratio + Classes


Class 1 (All IP's in server range)


Class 2 (All IP's in Client Range)

Now these screenshots don't make much sense to me but I was hoping someone here would know how to set this up correctly.
 
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