My router is an RUTX11. I have an application which works fine if I connect via Ethernet, but works very poorly over WiFi. I have tried various suggestions I’ve found on the forum, but the issue still remains. I have tried substituting a cheap Netgear router and a cheap TP-Link router, and the issue disappears. My application works fine on WiFi with either of those routers. Today I did some testing to compare network speeds of the RUTX11 on 5G WiFi and on Ethernet. I connected a USB drive to the RUTX11 and compared the copy speed of a 85MB file over WiFi with the copy speed over Ethernet. The speed to copy the same file is about 25 times faster over Ethernet than over WiFi! I also ran networkquality and had got similar results.
Here’s a screenshot of my file copy test results from today:
It seems like there is something wrong with the WiFi implementation on the Teltonika routers. I’ve had the same issue with the RUT240 and an RUTX14. Others have reported similar issues with other Teltonika products.
I should add that when doing my latest testing of the WiFi, I had the RUTX11 within 3 feet of the laptop, with direct line of sight perfectly clear, no obstructions.
Please ensure that the WiFi antenna is connected properly to the router and positioned at a 90-degree angle. Additionally, when testing the mobile connection, please ensure that both mobile antennas are connected properly and positioned at a 90-degree angle.
In WebUI navigate to Network → Wireless → Radio, set Channel to Auto, and select 40MHz width. Please let me know if the speed has changed.
In WebUI navigate to Firewall → General Settings and please insure that Software flow offloading is enabled under the Routing/NAT Offloading.
Could you please specify if this problem started with the newest firmware, or if it also occurred with the older firmware? There is a chance that the issue could be related to the firmware version.
Have you tried using a different device for testing? Do the results remain the same?
To test the router more effectively, I suggest using an application to check the WiFi channels in your environment, such as WiFi Analyzer https://www.wifianalyzer.info/. Try changing the channel to one that is less congested and please let me know if this helps.
Yes, the antennas are in their correct locations and vertical
The auto channel seems to help a bit. However, 40MHz doesn’t seem as good as 80MHz. Can you explain what this setting does, and why you would think it would improve my throughput?
Yes, it is already set that way
This has been a problem with the original firmware, and also with an RUT240. There was some improvement with flashing the latest firmware.
The only other device I’ve used for testing is with 2 different cheap consumer routers. Both of them worked fine with my application on WiFi.
I’m on a Mac so I can’t use WiFi Analyzer. I got NetSpot but it is not very helpful.
I’m still getting some dropped packets. I’m not in a position to re-run the file transfer speed tests. I’ll do that when I’m able.
While your and others’ suggestions have made some improvement, they are not enough to make the RUTX11 5G WiFi work solidly with my application. I’ve spent a bunch of time trying different settings, but haven’t been able to get the throughput I need on 5G.
To try to get a better handle on what’s going on I bought “LAN Speed Test”, a LAN test utility, and have run tests on the RUTX11 2G and 5G and compared them with Ethernet. My method was to insert a USB storage on the RUTX11 and mount that volume on my Mac. All devices were within 3 feet of each other with no obstructions, and no other devices on 5G. I’ll attach the test results to this posting, but bottom line, the average Mbps speeds were: 5G: 14 up, 12 down; 2G: 68 up, 74 down; Ethernet: 215 up, 366 down.
I wanted to compare these speeds with the cheap TP-Link router I bought. Since the TP-Link doesn’t have a USB connection I set up the test as a Mac to Mac with the TP-Link as router. I ran 2 tests, one with both Macs on 5G, and one with one Mac on 5G and the other on Ethernet. The average Mbps speeds were: 5G to 5G: 179up, 61 down; 5G to Ethernet: 237 up, 98 down.
These results tell me that there is something seriously wrong with the RUTX11 5G. The first set of tests were with only the RUTX11 and one Mac on 5G and no other network traffic. The second set of tests were with only the 2 Macs and the RUTX11 on the network. Why is the RUTX11 2G 5 times faster than 5G? Why is Ethernet 15 times faster than 5G? Why is the TP-Link 5G over 2 hops way faster than the RUTX11 over one hop? Is there something going on with my simple, straight-forward RUTX11 setup that is making the 5G so bad? If so, I need to understand what that is. If not, then these kind of results should be replicable, and hopefully fixable by Teltonika. Can we agree that there is something wrong with the RUTX11 5G?
Regarding the 40MHz channel width, I apologize for any confusion. This setting is recommended for 2.4GHz WiFi, as the default width is set to 20MHz. A wider Wi-Fi channel can enhance performance by allowing more data to be transmitted simultaneously, increasing overall speed and throughput.
Additionally, there is a new firmware version available, 7.09.1. I recommend upgrading your device, as this update may improve WiFi performance, similar to the enhancements provided by version 7.09.
If you are unable to use a WiFi analyzer, I suggest manually changing the channels to see if that improves performance. Also, please ensure that the transmit power is set to 100%.
If none of these solutions work, could you please perform a factory reset for testing purposes to determine if it improves the 5GHz WiFi?
OK. Got it. That clears up my confusion. I’ve set it to 80MHz.
I’m already at 7.09.1. That’s the firmware that was running when I performed those last tests.
I have tried a bunch of different channels, and power has always been set to 100%.
What is not being acknowledged here is that I’ve had the same experience with several other
Teltonika routers. The RUTX11 I current have in place is a replacement for one that went bad. I started with an RUT240 and have also tried an RUT14. They all had such poor 5G that my application wouldn’t work. It’s obvious to me that there’s something way worse about the Teltonika implementation of 5G that that of some cheap consumer grade routers, but that seems to be completely discounted by Teltonika. All I’ve done with this replacement RUTX11 is configure the LAN–no special settings or configuration, other than what Teltonika support has suggested I try.
I hope you can understand why I’m not optimistic that a factory reset will help. If I agree to do a factory reset, will you agree to set up an RUTX11 and test the 5G to a Mac?
Why you can’t use speedtest.net to test the speeds? I have had many RUTX wifi routers and speeds were normal. Also, RUT240 does not have 5 GHz wifi, so how you tested that?
I thought WiFi speed is the problem and not LAN speed?
It’s getting a bit confusing now…
And for a proper internal speed testing iPerf is one of the really good tools to use.
I’m running 50+ Teltonika boxes and never had a single internal speed issue anywhere.
Maybe I’m misinformed, but I am under the impression that LAN (local area network) includes not just ethernet but also WiFi. They both use the same IP address range.
You’re right, my issue is WiFi speed. Ethernet speed is fine.
I’m on Macs, and I found LAN Speed Test to be quite good to give me a handle on speed comparisons as I described earlier. Is there something that iPerf would give me that LAN Speed Test doesn’t?
I’m glad to hear that you’ve had good experience with Teltonika routers. I’ve also had good experience with Teltonika products, and I’m motivated to stick with them. Do you have any empirical data regarding 5G WiFi speeds? Most things seem to work OK for me. I just have one application that is not able to function correctly on the RUTX11 WiFi, and I’m trying to figure out why…
The network is on a boat. The application is an ethernet connected radar sending UDP data through the RUTX11. I am trying to get the WiFi connection between a Mac and the RUTX11 robust enough to reliably display the radar data. It works over ethernet, but over WiFi much of the data is lost, so the display is incomplete. My speed tests results explain why there’s a big difference. So far, none of the tweaks have fixed the issue.
What’s particularly baffling is that my network is small, I have very few devices on WiFi, I’m able to remove all but the RUTX11 and one Mac for testing, place them 3 feet apart with ideal antenna orientation and no obstacles, and I still get lousy 5G speed, no matter what channel they’re on. For purposes of doing the speed tests I’ve turned off Starlink and the radar. Since I’ve had the same experience with 2 RUTX11s and an RUTX14, that tells me that there’s either something wrong with the routers, or there’s something very strange about my network environment. I’m at a complete loss as to what might be going on in the environment…
To try to determine if there is interference in the 5G band, I’ve used the Channel Analysis tool in the Teltonika web interface, and this is what I’m seeing:
I’ve set up in a completely different environment, with only the RUTX11 and a Mac in the mix. I checked with Channel Analysis and have picked channels that show as being completely quiet in the 5GHz. I’ve reset to factory and have the latest firmware installed. The only settings changes I’ve made since resetting are installing iperf3 through the CLI interface and picking different channels. Using iperf3 I’m getting 5GHz speeds of <200 GBits/sec. This is far below the specifications.
TeWe, have you used iperf3 to check 5GHz speeds? If so, what kind of speeds are you seeing?
I’m glad to know that the RUTX11 is capable of the speeds I expect. I tried channel 44, but no improvement. A point of interest is that I worked with a Teltonika tech support guy for a couple of hours. He’s the one who showed me how to set up iperf3. He eventually had me do a complete restore to factory and re-install the firmware. That actually made a big difference–after that I got speeds as high as ~500Mbps. Unfortunately that still wasn’t enough to be able to use WiFi for my radar. Now, for some reason, I’m only getting less than 200Mbps, even after repeating what I did with tech support. Maybe I’m missing something…
I’m out of ideas of what to try. The only thing I can think to do is order another unit to see what a completely virginal unit will do.
BTW TeWe, what terminal command do you sue when doing an iperf3 test? I’m using: iperf3 -c 192.168.1.1 -t 60 -b 0
