You can’t set a queue unless you know what speed you have.  Kinda hard to do 
that without testing it, latency aside, a speedtest is best, but then you are 
maxing it out every so often, and you have to assume that there is other 
traffic on it as well ☹

Dennis Burgess, CTO, Link Technologies, Inc.
[email protected]<mailto:[email protected]> – 314-735-0270 x103 – 
www.linktechs.net<http://www.linktechs.net/>

From: Af [mailto:[email protected]] On Behalf Of Glen Waldrop
Sent: Friday, November 6, 2015 9:23 AM
To: [email protected]
Subject: Re: [AFMUG] Mikrotik fair queues over a variable speed link?

I was watching this one, hoping someone had an answer better than that.

If I were better at scripting I'm sure something could be arranged to change 
the queue max speed as latency increases.

A bursting QoS setup would help a bit in this situation, ran into it myself. 
The problem I ran into was the radio got flakey at 8Mbps, occasionally less 
when the weather was rough. Some days I could set max speed to 10Mbps without 
issue, others only 6Mbps.

In my situation I think the limiting factor was packets per second rather than 
actual throughput. The link has been replaced since.




----- Original Message -----
From: Dennis Burgess<mailto:[email protected]>
To: [email protected]<mailto:[email protected]>
Sent: Friday, November 06, 2015 8:55 AM
Subject: Re: [AFMUG] Mikrotik fair queues over a variable speed link?

Not without having some kind of insight into what the speed at any given time.

Dennis Burgess, CTO, Link Technologies, Inc.
[email protected]<mailto:[email protected]> – 314-735-0270 x103 – 
www.linktechs.net<http://www.linktechs.net>

From: Af [mailto:[email protected]] On Behalf Of Christopher Gray
Sent: Thursday, November 5, 2015 3:28 PM
To: [email protected]<mailto:[email protected]>
Subject: [AFMUG] Mikrotik fair queues over a variable speed link?

Is there a way to implement a fair queue system [like PCQ but] over a variable 
speed / flexible frame link without significantly limiting the overall link 
speed? I have an area that is being served with a NLOS backhaul link having 
variable peak speeds.

I'm working on the improved backhaul location, but it will still be a few 
months.

Thanks - Chris

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