Am I doing something terribly wrong, or is SpeedFusion bonding useless?

@mssfrance, this has been answered below.

In short, you need to understand more on the WAN links you used and do the appropriate throughput testing. You may get help from your Peplink partner if needed.

1 Like

Dear All,

I have the same issue here:

  • two LTE connections
  • different performance
  • the result is only the avarge speed of both not the total of both ( minus overhead)
  • what is strange that upload seems to be limited to 50 MBps

See screenshot. I hope it is self-explaining:

Strange that there are so many abadonned threads on this. I hope someone has a solution idea.

There is a lot going on in that graph.
Lets work our way through it.

Download test #1. Cell1 and Cell2
1.~25MBps download. Cell1 doing most of the work. Cell 2 throughput is low maybe ~5mbps.
2. When combined like this latency is managed and looks reasonable <~100ms
3. Cellular 2 is lossy touching on 50 packets/sec and Cellular1 has a noticeable amount also maybe 25pkt/s

Download Test #2 - Just Cellular 1 (CAT12)
4. Loads of bandwidth ~90+Mbps
5. Latency stays low <100ms
6. Some packet loss but its minimal

Download test #3 just cellular 2 (CAT4)
7. 8-10Mbps?
8. Monster amounts of latency! Over a second! Worse than Satellite.
9. Tiny amount of packetloss at the beginning of the test - then nothing.

Upload Test #1 Combined
10. 30Mbps ish
11. Latency is fairly evenly poor - both connections must be creeping up to 200 - 250ms+
12. So much packet loss per second on both links!

Upload Test #2 Just Cellular 1 (CAT12)
13. Touching 45Mbps of bandwidth which is good
14. Latency isn’t great in the region of 200ms
15. Slight touch of packetloss

Upload Test #3 - Just Cellular2 (CAT4)
16. 30Mbps+ bandwidth
17. Latency is not good >250ms at times.
18. Chunk packet loss.

Some observations / recommendations.

  • We can see from download test #1 and upload test #1 that the two cellular connections are interfering with each other. When both cellular connections are in use, we see high packetloss on both connections (3 & 12).

Check antenna positions, make sure you have all antennas connected and separated well. Also what frequencies are each cellular connection using? Are they on the same bands? Are you using splitters or amplifiers maybe?

  • Download latency on cellular 2 (CAT4) is horrific (8) that needs investigation. Are you right on the cell edge perhaps? What are the RSRQ RSRP and RSSI values for this connection? Sometimes this can be caused by a mis-configured tower.

If you want to continue to work on this please open another new thread (you can copy and paste these two posts into the top). You have duplicate posted your question across a lot of the threads you found which makes things messy.