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markrudling
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HELP Only .5mb on 32km link

Wed Aug 23, 2006 7:26 pm

Hi.

This is our setup:

One side is a 532 with one senao NMP-8602 with eth01 connected to pc.
One 1.3m dish (not sure of gain) with about 2m LMR400.

Other side is a 532 with 3 senao NM-8602's, one set to bridge other 2 AP's.
One 24db grid with .5m LMR400, then 2 horzontal sectors on the AP's.
We running on 2.4ghz.

When doing speed test and real life transfers it is very slow, with only about .5mb throughput. After playing with settings we got it up to just under 1mb...

As im new to mikrotik, could you at least advise me on the optimal status. Eg: ccq... siginal to noise ratio...

Thanks.
 
kthameen
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Dear Mark

Wed Aug 23, 2006 8:14 pm

The first thing you test after setting up a link is the Signal you tune it to the max then you make your bandwidth tests.Plz go the registration table in the wireless menu and check the signal,it should be in ur case between -80's and -91.If the signal is bad
-you should check your pigtails in case of loss.
-tune your antennas by pointing them to perfect line-of-site or try changing your scenrio with turning ur the grip to horizantal or vertical,and as for the dish try a grid instead of it coz it needs accurate of tunning.
try the above and gimme the signals plus ur link distance..
 
markrudling
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Thu Aug 24, 2006 9:00 pm

Here are my current stats

From the AP from the status menu:

Overall TX CCQ: 25%
Noise Floor: -98dbm


From the Station from the status menu:

Tx/Rx Signal Strength: -69/-68
Noise Floor: -99
Signal To Noise: 33
Tx/Rx CCQ: 33/30%
Overall Tx CCQ 0%

Im sure these are totaly crapy?

Is horizontal or vertical better on long range links. We running horzontal currently.

Thanks For the intrest.
 
Biggs
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Thu Aug 24, 2006 9:28 pm

Which version of ROS do you run on these box? I had a 14km link that had similar problems; good signal, no noise, but low CCQ. I updated the ROS version from 2.9.7 to 2.9.23 at each end and saw the CCQ pass from 20-30 to 60-70 and the throughput pass from 2-4mbps to 15mbps. I did not change anything else.
 
markrudling
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Thu Aug 24, 2006 10:41 pm

Im running 2.9.27.

Should i upgrade anyway? Wrong place to ask it, but sould i just download the upgrade from http://www.mikrotik.com and ftp all the files across?

Will my settings stay the same, i dont feel like the drive in the bush to setup the board...

Thanks.
 
jober
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Fri Aug 25, 2006 7:05 am

yes, it will keep your config.
I would try turning off the other two 8602s in that one box. then I would change channels till I found one that works the best. And then I would try the sr2 cards. And if that doesnt do it, I would spit on it and call it some nasty names. Then come back the next day with a better attitude.
 
cmit
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Fri Aug 25, 2006 10:13 am

And if that doesnt do it, I would spit on it and call it some nasty names. Then come back the next day with a better attitude.
I like THAT attitude :lol:

Best regards,
Christian Meis
 
markrudling
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Fri Aug 25, 2006 10:23 am

Thanks guys,

I will upgrade tonight after work. Currently im brushing up on some intresting profanites to throw at the board!

What the difference between a full install and an upgrade? Im guessing an upgrade will just update, keeping current settings while a full install will bring it back to factory state?

Enjoy the weekend...
 
kenk
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Fri Aug 25, 2006 3:24 pm

Post your wireless registration table also
with int wir reg print statistics, so we can see the rest of the circuit.
For example, sometimes with various issues the cards dont get the dynamic timing ack measurements right - they should be the same on both sides of the link, probably around 300 for your link distance.
 
markrudling
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Fri Aug 25, 2006 4:27 pm

Please advise on how to print the stats. Exact command if possible..

Sorry, Mikrotik virgin...

Thanks
 
kenk
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Fri Aug 25, 2006 5:02 pm

Sorry I shouldnt have abreviated it.
interface wireless registration print statistics<CR>
 
jo2jo
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Fri Aug 25, 2006 5:39 pm

it sounds like you are using 2.4ghz for the back haul....can you use 5ghz here? and then use 2.4ghz for the AP clients...

EDIT: oh and when you do a "scan" or "Frequency Usage" in winbox what do you see? i ask bc maybe there is a lot of interfearence or spectrum usage in your area.
 
markrudling
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Fri Aug 25, 2006 6:14 pm

we want to use 5ghz at a later stage, but we just bought 2.4ghz antenna's and now our budget is not looking very good. so we have to make 2.4 work for now.

On the station side we pick up a few other wireless networks. The station is situated on a fire-lookout, in the country so local interferance in almost none.
The other AP side is on the top of the city, at a house that sends the siginal over town. The town has a lot of wireless networks, with a lot of people running 400mw, with high-gain antenna's.

The link we are connecting, shows our ssids as the strongest siginals.
 
markrudling
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Fri Aug 25, 2006 11:36 pm

Sorry...

When typing "interface wireless registration print statistics<CR>" i get "[mark@TTP HI-SITE] > interface wireless registration print statistics<CR>
no such argument (statistics<CR>)"

Is there something i need to setup?

Thanks again
 
cmit
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Fri Aug 25, 2006 11:39 pm

Nope - I just think that it's just "stats", not "statistics", so:
/interface wireless registration-table print stats
Best regards,
Christian Meis
 
markrudling
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Fri Aug 25, 2006 11:45 pm

Thanks cmit

On the AP Side:

"[mark@Uplands] > /interface wireless registration-table print stats
0 interface=AP Uplands to TTP radio-name="Bridge To Upland"
mac-address=00:02:6F:42:E8:39 ap=no wds=no rx-rate=2Mbps tx-rate=2Mbps
packets=0,15 bytes=0,1015 frames=0,7 frame-bytes=0,1021 hw-frames=8,2405
hw-frame-bytes=288,111772 uptime=1m6s last-activity=90ms
signal-strength=-67dBm@1Mbps signal-to-noise=30dB
strength-at-rates=-67dBm@1Mbps 90ms,-68dBm@2Mbps 10s710ms
p-throughput=1905 nstreme=yes framing-mode=best-fit framing-limit=3200
routeros-version="2.9.23" last-ip=192.168.1.2 802.1x-port-enabled=yes
authentication-type=none encryption=none compression=no "

At the Station Side:

"[mark@TTP HI-SITE] > /interface wireless registration-table print stats
0 interface=Bridge To Uplands (EN-01) radio-name="Uplands AP to TT"
mac-address=00:02:6F:42:E8:4F ap=yes wds=no rx-rate=2Mbps tx-rate=2Mbps
packets=76,56 bytes=44685,6848 frames=53,52 frame-bytes=44737,6642
hw-frames=87,6950 hw-frame-bytes=68950,325440 uptime=2m53s
last-activity=30ms signal-strength=-62dBm@2Mbps signal-to-noise=36dB
strength-at-rates=-62dBm@2Mbps 20ms tx-ccq=31% p-throughput=1435
nstreme=yes framing-mode=best-fit framing-limit=3200
routeros-version="2.9.23" last-ip=192.168.1.1 802.1x-port-enabled=yes
authentication-type=none encryption=none compression=no"

Hope this is what you need.
 
markrudling
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Sun Aug 27, 2006 12:22 pm

Right, After some fiddling this weekend, i have some new results.

I was advised by the salesman not to even think of trying 802.11g on a long range link. But after a lot a tweaking and software upgrades, i only managed .9mb.

So i changed over to 802.11g with some incouring results. After tweaking data rates and power settings, I can now transfer at about 6mb or 3 each on "both" test.

I have fixed the rate @ 24mb, this had the most consistent speeds.

Thanks to all who helped, i think with a station between these 2 i will get much better results, and we will change over to 5ghz as soon as we can.

Finally, could anyone advise on how to use the "align" function. Will it work on 2 532boards?

Thanks again
Mark

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