Hello,
I have a point-to-point link between 2 SXT devices for a 500m distance.
Actually a leave default values for the protocol, so I am using 802.11.
I read lots about Nstream and Nv2, but I want to know your experience for point to point links.
Is there any real performance using this propietary protocols?
I will appreciate your help.
Kind regards.
Nstreme or NV2 will generally increase your speed somewhere around 40% in point to point links assuming it is a clean link.
As to which works best, try it and see. I’ve got some links where Nstreme is killing it, I’ve got some where I can’t get Nstreme to associate, NV2 is the only way I can even keep customers online. Other links, NV2 has terrible performance, Nstreme pushes 20+ mbps over the AP to around 20 clients on a 10MHz wide channel.
Your local noise will be the deciding factor as to which way works best. 802.11 has the lowest latency, though NV2 usually has the most stable latency under load.
Setting Nstreme with a 70% CCQ slightly improves my throughput but latency is through the roof. It would reach around 1000ms. Switching to Nv2 drops latency to ~40ms but my throughput also drops significantly, even lower than 802.11. Just like what 0ldman said using nstreme and nv2 protocols probably requires a clean link to be optimal.
With clear 80MHz channels 802.11 is fastest.
+1 Also couldn’t get QoS working on NV2 (DSCP / Priority stripped when the frames are leaving the WLAN). NV2 seems to have taken a serious knock downwards in recent versions, I don’t recall it ever being as bad as it is right now.
Straight up 802.11 here too…
Have you tried changing your frame limiter on nstreme?
In high noise I’ve found 2000 to work better than anything else, type is best fit. Yours may need a different limit, but that works for me.
Ste, you have better bandwidth with 802.11? I typically find the AP stuck below 10Mbps on 10Mhz channels without any of the polling protocols, usually double that with nv2 or nstreme. My old backhaul maxed out at around 35Mbps in turbo A 802.11, got a little over 50Mbps with nv2.
In Lab. Did tests with 40 and 80 MHz Channels with .ac and see that nv2 and nstreme limit the speed. nv2 goes a bit further than nstreme. 802.11 gives highest speed.
I know this does not transfer to outdoor. But it shows that nv2/nstreme limit the possible speed.
We’ve done some lamppost installs where cpes are within some 100m. So it makes sense to work with broader channels there.
So you do nstreme/best fit/2000 everywhere and see good results? What packages do you offer? How much cpes/AP?
I only have the 2000 limit where required, most are 4000.
4Mbps download, 1Mbps up, I try to keep it below 25 subs on a single AP, though I may be able to get away with more on 802.11n, that was my old limit from G hardware.
Anything from a half mile to 10 miles from the AP.
Lab vs outdoors is a completely different ballgame. I tested this stuff for months before I put it in the field, made sure I was ready for every possible situation before I started my WISP. Crashed client units (halfway) intentionally so I had to repair them remotely, tried every channel width, protocol, whatever variable I could think of, intentionally made the links horrible to test the limits and try to work around it, still got taken to school the first three months.
I don’t know why you saw limits in the lab. I generally see better throughput with either nstreme or nv2 in my testing on the ground. Makes a tremendous difference in the air with 20 clients trashing the band, fighting for their air time. I’m moving away from vanilla 802.11, phasing out the last few non MT radios so I can swap the last couple of APs over to nstreme or nv2.
Right now 100% rural, trees are an issue, and AT&T has crap fiber prices in Alabama.
Different game. I could not sell so small packages. With packages up to 10 you are fine with nv2. With bigger packages nv2 makes problems.
Could be, I have little experience with packages over 10Mbps with a loaded access point at least.
We have used NV2 for a lot of point to point shots, but that is a bit different than an AP with multiple clients.
I’ve got a few on NV2 that are set to around 40Mbps but those are just tests, family, etc, not widespread.
As long as there are a handful cpes/ap you get good results. Going further tcp speeds decrease even with low overall usage.
Gotcha.
I’ve noticed NV2 doesn’t run as smoothly as it did in v 6.20.