On our 2.4 GHz network we have a new DTD setup with a Bullet on one side and a Rocket on the other. The two nodes are roughly (guess) 400 feet away and the Rocket dish pointing mostly away from the Bullet's sector antenna.
The two devices are on ch. -2/10 but have different SSIDs.
Per WiFi Scans: Each of these two nodes hears the other at about -62dBm.
All of the above may be okay to live with although installation of a RF Armor kit is planned.
The problem is when I run IperfSpeed:
(Server -to- Client)
- Bullet -to- Rocket = 36 Mbps
- Rocket -to- Bullet = 92 Mb/s
It doesn't seem right that there would be a 3:1 speed difference depending on which direction the testing is performed.
I did not personally set up the Netgear GS108E used for the DTD. Both nodes have DHCP servers turned ON.
On a separate part of out mesh I tried IperfSpeed for a similarly DTD connected devices (two Rockets) and in each direction I see the same 90 Mbps. So it makes me think something is wrong with our setup described above. Any ideas?
Thanks, Mike ab4yy
this is a check through the LAN side and does not involve RF
The LAN connection on these units is 100 Mbps so getting 90 is pretty good. I suspect that the one end of the iperf test does more work then the other end and the Bullet just does not have enough horsepower to support rates much above 25 Mbps (in addition to the other things it is doing - which will vary).
What you need to try is a Bullet-to-Bullet DtD test and see if that produces a symmetrical (but lower) speed result.
If true then this says using a Bullet at a central location with a lot of traffic might not be such a good idea.
Ken
so apparently the computing task for iperf is not all that onerous, I added iperf to my airGrid node and did iperf across the Ubiquiti ToughSwitch in between over to the M5 and got 90 Mbps in both directions (a symmetrical result).
It would seem most likely that you have a bad cable or switch ....
There are no Internet Gateways on our mesh but my connected computers (e.g. RPI, etc.) have Internet and I also have ssh access to the nodes. Is there any other way to get the data?
- Mike
A link at the bottom of the node's Setup/Administration screen will download the Support Data file to your PC.
Andre
Okay, I attached a .tar.gz with the extension renamed to just .tgz
It opens okay with 7zip in Windows.
I couldn't see how to upload 2 support files. :)
- Mike
I'm not seeing the errors I would expect to see for a bad network cable, its still possible its the cause (and usually I would say its the most probable scenario) but it is odd to me that I'm not seeing network errors showing up. If the cables can easily be swapped its worth testing a swapout to be sure, but I'll admit I'm a bit worried that may not actually solve the problem based on the lack of errors I'm seeing.
I'll have to ponder more on the data.
*Tag Webmaster to comment about uploading multiple files in a single post*
It is now possible to attach up to 4 support data files per post.
I am waiting for others at the location(s) to try some swaps. I can re-test then report back after testing. I can easily test most any time but not physical site access to where the problem is. - Mike
Just to close this issue, there was a pair of DSL devices in the ethernet link for one of the nodes that had a flakey power supply. Once the power supply was replaced, this entire issue went away.
Thanks for all the responses and suggestions with this issue.
- Mike ab4yy