Good day,
I have a question.
I use mainly Basebox5’s for our sector antennas and I have noticed that if there is about 20 clients connected the speed never goes above 12Mbps in total for all those clients, all within 10km range
Signals is between -40 and -70
Using 5Ghz a/n on NV2 with 5ms TDMA Period Size.
If I kick of 10 of those cpe’s then is goes above the 12Mbps limit.
Anything funny I am doing wrong or any possible solution to get more speed without going to 40Mhz?
I would like to add,
This has been happening on all my sectors, adding new ones isn’t a option since there is no spectrum available.
Space one the high sites is also running out
Damm,
Looks like I am the only one with this issue?
Try to lower TDMA period size to default value of 2ms.
Regards,
M.
Hi,
The only thing that happens when I lower the tdma is less throughput per client.
For instance the client with the best signal of -55 would get about 5Mbps with 5ms tdma and about 3.5 with 2ms.
If you disconnect all clients but one then 30Mbps +
Hello,
AP side works as ap-bridge and clients as a station or station-bridge or you’re using some
other mode (wds, pseudo-bridge…) ?
Second question, which software version is at APs and at client side (stations)?
Also, which wireless package is active?
There must be something with either software version or your specific setup,
hardware is capable of more than that.
Regards,
M.
p.s. Did you test this with or without active queues?
It would be easier to get the rigth answer with more details about your setup.
Hi,
Ap side is ap-bridge and cpe is station.
Software is usually the latest available one, 6.35.2
Still using wireless fp, have tested with wireless cm2(didn’t make a differance)
No active queues.
I’m starting to think that the issue might be 5ghz-a/n on the ap and the cpe or something to do with the slowest cpe connected.
I see this behavior with almost all the sectors, so someware I’m goofing.
Haven’t tested using 5ghz only N yet.
Hi,
Client with the lowest signal level quality will always have the biggest degradation potential on throughput of the ap-bridge.
If you have just one client with low modulations/CCQ and he/she starts to download all other clients with good signals (at the same AP) will experience much worse throughput than usual.
I would pick one AP (sector) with 20 or so clients with good signals (let say better than -60dBm) and with just a couple of clients with bad signal levels.
Then I would try to compare throughput of the AP with and without just those clients with bad signal levels.
Take a good look at registration table, modulation rates and CCQ, that information is usually enough to spot “bad clients” even if they have good signal levels (in dBms).
Regards,
M.
Thank you.
I hope ROS v7 will have some kind of way so that the bad clients doesn’t affect the good ones throughput.
Question is ap-bridge the best option to use in a ptpm situation?
Ap bridge used to work just fine, but as clients are asking more and more bandwidth we are add more and more sectors.
If I can get about 10M more out of a sector I would help a lot
TDMA period size of 2ms is totally correct - it works
Also - what I have found helps throughput is to also do the following:
Set “Hw Retries” on clients and APs to → 3 (edit - do this on APs and also all clients)
Set your “Cell Radius” to about 20 percent larger than your registration table shows for distance
Avoid mixed modes ! If you have b/g then pick G-Only, If you have A/N - then pick N-Only, If you have A/N/AC then pick AC only (edit - do this on APs and also all clients)
I have tweaked and tweaked for years and this gives me the highest throughput for multi and ptp connections.
Is HW Retries used with NV2? I thought not.
YES it is used and it does effect throughput
wireless - advanced
@ p3rad0x
How sure you are that this is the limit on radio and not somewhere else in your network?
It is very unlikely that you have the same problem on all APs in whole network.
What results do you get with old nstreme protocol?
Regards,
M.
I have 50+ nv2 AP.
I have tested and tested and tested throughput on M-PTP and PTP (clients, APs & wds links) using btest (both udp and tcp).
Every time a newer Mikrotik firmware/update is release, I also always pre-test prior to updating my production units.
In total - I have about 1,000 microwave links. And I test almost all of them at one time or another - looking/checking/testing what can I do to improve the throughput to my 5 GHz NV2 client connected customers.
Old Nstream gives a bit more, but the latency is pretty high.
The network is routed, if connect lets sy 10 clients with -50 signal then the sector goes 20Mbps + but as more clients gets added all the connected ones gets affected.
p3rad0x
nstream is far better/faster than the standard 802.11 protocol
however I prefer NV2 for large networks and long-distant networks.
Most of my 5ghz nv2 clients are 3 to 20 km on APs with 10 to 30 connected clients (using 5 GHz N-only NV2 single polarity “horizontal”) can btest from 30meg to 80 meg back to my data center - with normal customers actively using their networks during the btest.
FYI - my average client registration table for most of my APs shows 150 meg connection - for each client.
Antenna db gain and wlan card rx sensitivity and a clean channel and network redundancy is everything …
What ever the math shows for a wireless link budget at the highest connect rate - cut it in half and overdesign by 2x
North Idaho Tom Jones
Thank you.
I haven’t been able to solve this issue yet.
I have checked, all ethernet connections is running @ 100Mb or 1Gb
The eternet ports of ptp bridges is running at the same speed and the links isn’t being saturated.
In town there is a lot of interference(most probably the biggest culprit)
Also there is no frequency to switch to 40Mhz
Re: Also there is no frequency to switch to 40Mhz
Well - yes and no. To use 40 GHz of frequency channel bandwidth …
On an N (pref N-Only) you need to set Channel Width on AP and clients to 20/40MHz Ce -or- 20/40MHz eC
If everything on the wireless AP is a Mikrotik, then also use the following:
Nothing magical as far as I can see on our own WISP setup. I would suggest checking your spectrum quality. Do you have high noise levels from physically close by radios? Are you using excessive power levels? Is anyone else running excessive power levels close to you within the same radio band? See screenshot below from our radios running legal EiRP levels, 5ghz-only-n, Nv2 on 20M channel, 2mS TDMA period, cell radius 10km and hw-retries set to 15. A few clients are in a bad location and cannot go any faster than around 40-50M data rate. But this is a problem with trees in Fresnel Zone. Also note that Nv2 does not raise data rates until traffic passes. When just idling or with low traffic it is normal to see low data rates.
Hi,
I have tested the above settings on a sector that has clients that require a lot of bandwidth.
Using a sxt AS5 ac and all clients is within 5km.
And it seems like the sector is peaking right under 20Mbps, now to find that special frequency.
Also, is there a way to easily upgrade router os and install the rep package without doing 1 radio at a time?