| 20M fiber slow speed test I finally got my fiber connection running. I have a 20M/20M connected. When I run speed test from many different sites, the best I have been able to get is 6.54M/5M.
Is this normal?
I am running a small WISP. The fiber is at a cell site and comes to me via Ethernet cable. I then feed that to a wireless 5.8 backhaul to the NOC. |
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| What kind of test rates do you get from the head end?
Sounds like a problem with the back haul.
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Mitch
support@abetterwireless.com |
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| reply to aknisley
As your provider if you need to set your side to auto or 100/full duplex. AT&T requires 100/full but they won't bother to tell you that..
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I do not, have not, and will not work for AT&T/Comcast/Verizon/Charter or similar sized company. |
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 TomS_Git-r-donePremium,MVM
join:2002-07-19
London, UK
kudos:4 | reply to aknisley
I agree with penypinch. Start with a speed test from the cell site, thats the demarcation point between your provider and you. If its still slow there, you know that likely there is nothing wrong in your network and you need to go back to your provider and ask them wtf.
If you do get full speed from the cell site, then you need to start investigating your own kit to work out whats causing the slow down.
Also as battleop said, make sure that when you plug in your cable that you negotiate at full duplex. If the provider has hard coded a speed on their side, your side will probably end up on half duplex, and that will really mess things about. |
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| reply to aknisley
Along with what has already been said (speed/duplex a good thing to check), i would also take into your account what speedtest you are using. With routing/peering/etc sometimes even a test close to you may give poor results. I would try a couple at speedtest.net and speedtest.comcast.net . |
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| Thanks for all the reply's. I have discovered my Mikrotik SXT 5HnD may not be able to do 20 MBps . |
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| said by aknisley:Thanks for all the reply's. I have discovered my Mikrotik SXT 5HnD may not be able to do 20 MBps .
20mbps shouldnt be an issue for it. What channel width are you using? |
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| channel width 20 |
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bburley
join:2010-04-30
Cold Lake, AB | I have a pair of SXT's that can pull 85 Mbps of user data, but ONLY while using 10 separate streams. An individual stream is about 1/10th of that speed.
I haven't yet taken the time to fully understand why it works that way, and why other devices can pull max speed with only one stream. Perhaps someone here already knows the answer. |
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lutful... of ideasPremium
join:2005-06-16
Ottawa, ON Reviews:
 ·TekSavvy DSL
| Your observation applies to many WISP radios.
You can read more about tuning TCP for throughput measurements:
»pirlwww.lpl.arizona.edu/resource···e/iperf/
relevant quote:
Another test to do is run parallel TCP streams. If the total aggregate bandwidth is more than what an individual stream gets, something is wrong. Either the TCP window size is too small, or the OS's TCP implementation has bugs, or the network itself has deficiencies. |
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