QOS question

Hello,
I’m fairly new to Router OS but I live and work where we use RB411’s. I live out in the country and have a Sprint Airave to get better cell reception. My Airave is connected to my RB411 via wired to a WRT54G with DD-WRT as a wireless repeater. However, my Airave calls are always choppy when I’m downloading or have multiple PC’s connected to the RB411. After reading several forums, many people recommend improving QOS for the Airave. I fixed the QOS with my WRT54G, but I cannot figure out how to fix it on my RB411.
I’ve tried this: http://wiki.mikrotik.com/wiki/Voip but when I run a packet sniffer, it appears that the Airave doesn’t use TOS. Is this possible? I’ve attached a copy of my saved packet sniffer file. Wireshark shows ip.dsfield == 0.

I know my Airave’s MAC, IP, and the WRT54G IP, which I only use for the Airave. So is there a way to make the Airave high priority using its MAC address or even using the IP address of the WRT54G? Or is there a way to set a high priority for UDP ports that the Airave uses (Port numbers for the airave are 53 /500 / 4500 / 52428)? :confused:

Thanks so much,
Brandon
sniffer.txt (12 KB)

Can anyone please help me???

Is there a way to improve QOS by an IP address or Mac address?

[2009.8.11 09:20:51] hypnologic: if you want to make qos and manage bandwidth
[2009.8.11 09:21:13] hypnologic: i can suggest you first take the time to understand how MT works
[2009.8.11 09:21:17] hypnologic: some info:
[2009.8.11 09:21:27] hypnologic: http://wiki.mikrotik.com/wiki/NetworkPro_on_Quality_of_Service
[2009.8.11 09:21:51] hypnologic: http://wiki.mikrotik.com/wiki/Bandwidth_Managment_and_Queues
[2009.8.11 09:22:11] hypnologic: http://wiki.mikrotik.com/wiki/Packet_Flow
[2009.8.11 09:22:15] hypnologic: http://wiki.mikrotik.com/wiki/Queue
[2009.8.11 09:22:28] hypnologic: http://wiki.mikrotik.com/wiki/HTB
[2009.8.11 09:22:33] hypnologic: http://wiki.mikrotik.com/wiki/Burst
[2009.8.11 09:22:36] hypnologic: http://wiki.mikrotik.com/wiki/Queue_Size
[2009.8.11 09:22:39] hypnologic: http://wiki.mikrotik.com/wiki/PCQ
[2009.8.11 09:22:45 | Edited 09:22:50] hypnologic: take two days
[2009.8.11 09:22:56] hypnologic: read, experiment
[2009.8.11 09:23:03] hypnologic: think hard
[2009.8.11 09:23:08] hypnologic: udnerstand hard
[2009.8.11 09:25:37] hypnologic: + there is even more on the net

NetworkPro,
I appreciate your reply. I’ve spent the past six or so hours reading and contemplating your links. I better understand the process now, but I still don’t know how to give a single IP address priority. The links explain how it works, but don’t say how to make it happen. As I said, I’m very new but I want to keep learning. Can you give me a link or tell me exactly how to give priority to a certain IP, please.
Thanks,
Brandon

Faster answer I can give is - first link I supplied - scroll down to the ADSL example - see how some of the traffic is mangld and them managed with the queue tree? Taht’s how its done, you need to mangle by IP address.

Thanks alot for the mangle help. I used your example of QOS and it seems to improve our network traffic. However, as for the Airave, I realized that I don’t think QOS will help it. I think my problem is with latency. My RB411 is getting its internet connection from an RB133 that’s located about five miles away (line of sight). I’m very often getting ping times of over 150ms, and I think this jitter is causing my problems.
So, if latency is the problem, is there any way to help my latency problems… either to lower them or keep them constant? Is the distance causing this? Noise?
Thanks again

Here’s my latency screenshot from one router to to the other:
scrshot.jpg

This could go to re-engineering the point to point link, could need new hardware etc.. but can be greatly improved, yes. Check the CCQ values of the wireless cards …

Yeah, I think it’s definitely CCQ related. Here’s my status:

And here’s what I get when I check my frequency usage on 5Ghz:
Could it still be hardware or a setting I can try?
scrshot2.jpg

Go check antennas etc, fresnel zone, line of sight, any nearby 5G equipment that may interfere … go check.

Haha, I really wish I could check all of those. I don’t have any kind of equipment to check five miles (I don’t even own a telescope). I climbed to the top of our 75-foot tower that has the antenna on it and looked across the horizon. It looks like it is possible that there may be a two or three trees blocking the path.
Would trees cause these kinds of results? If so, am I SOL?
Thanks

Anything in the way of the fresnel zone can cause loss in performance and low CCQ. Go cut the trees.

I would love to cut the trees but they’re on other people’s property, and I don’t think they’d understand that I’m trying to improve my low CCQ :laughing: The routers are owned by the same business, but located on different properties five miles away from each other… So I guess I’m screwed, or we can spend hundreds and add more height to the 75-foot towers. Thanks for all of your help anyway.

NerworkPro I tested your exmple http://wiki.mikrotik.com/wiki/NetworkPro_on_Quality_of_Service
and It is very fine …
But I have few questions:
1.)Why you using queue tree only for uploading (and mangle also for outgoing interface) … isnt is also good for using downloading?
2.)Also isnt be better to change in queue tree, child queue type into something other then default?

  1. Upload QoS is more important especially with ADSL when its speed is so low @ upload. Download QoS can be made later in a similar way.
  2. True. Change it. A packet should not be queued more than 5ms of time - a size of 5-6 packets per queue?

by the way nstreme and adaptive noise immunity can improve an underperforming link … as well as Lowering the tx power (experiment with it)