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Forum Discussion
Slow LAN connections on RBR50?
Hi, I'm just wondering if anyone else has encountered this issue, or if it's just me. The problem - very slow LAN transfer speeds between devices connected through an Orbi satellite. Configura...
This is not my experience with the RBR50. I have one desktop connected directly to a RBR50 LAN port and another desktop connected to a gig switch the is connected to the RBR50. When I run iPerf3, it records 949mbs in both directions. Considering TCP overhead, this seems to be "full speed".
Also, my impression is that the Orbi CPU is not involved in LAN to LAN data traffic. I telnet into the Orbi and run the "system activity report" (sar) and watch while I begin an iPerf3 test. Percentage CPU use does not change. My guess is that the "switch module" is a stand-alone chip that know which traffic stays in the LAN module and which has to be passed to the CPU.
Using the cheap gig switch achieves the same thing (data transfer stays within the switch).
I have no answer for what can be causing this phenomenon with your Orbi LAN ports. The standard question is, "Have you tried rebooting the switch?"
What kind of speeds do you see if you put the RBS in the mix?
CrimpOn wrote:This is not my experience with the RBR50. I have one desktop connected directly to a RBR50 LAN port and another desktop connected to a gig switch the is connected to the RBR50. When I run iPerf3, it records 949mbs in both directions. Considering TCP overhead, this seems to be "full speed".
Also, my impression is that the Orbi CPU is not involved in LAN to LAN data traffic. I telnet into the Orbi and run the "system activity report" (sar) and watch while I begin an iPerf3 test. Percentage CPU use does not change. My guess is that the "switch module" is a stand-alone chip that know which traffic stays in the LAN module and which has to be passed to the CPU.
Using the cheap gig switch achieves the same thing (data transfer stays within the switch).
I have no answer for what can be causing this phenomenon with your Orbi LAN ports. The standard question is, "Have you tried rebooting the switch?"
FURRYe38 wrote:What kind of speeds do you see if you put the RBS in the mix?
I used a Lenovo laptop that reports about 945mbs using iPerf3 to the same desktop. Connected it to the RBS50 that has WiFi backhaul.
iPerf3 reports 245 in one direction and 295 in the reverse direction. (I have no idea why running iPerf3 with the "-R" switch seems to always report higher speeds). So, it appears that the overhead of going Laptop->Sat LAN->Sat->WiFi backhaul->router->LAN->gig switch->desktop cuts the performance by about 55%
Testing with ethernet backhaul requires dragging an ethernet cable down the hall, down the stairs, and into the living room. Something I do only when alone in the house!
Still lack even a theory to explain why some Orbi's behave drastically different from others.
Same thing with reduction in speed if you remove the switch?
Laptop->Sat LAN->Sat->WiFi backhaul->router->LAN->desktop
CrimpOn wrote:
FURRYe38 wrote:What kind of speeds do you see if you put the RBS in the mix?
I used a Lenovo laptop that reports about 945mbs using iPerf3 to the same desktop. Connected it to the RBS50 that has WiFi backhaul.
iPerf3 reports 245 in one direction and 295 in the reverse direction. (I have no idea why running iPerf3 with the "-R" switch seems to always report higher speeds). So, it appears that the overhead of going Laptop->Sat LAN->Sat->WiFi backhaul->router->LAN->gig switch->desktop cuts the performance by about 55%
Testing with ethernet backhaul requires dragging an ethernet cable down the hall, down the stairs, and into the living room. Something I do only when alone in the house!
Still lack even a theory to explain why some Orbi's behave drastically different from others.
FURRYe38 wrote:Same thing with reduction in speed if you remove the switch?
Laptop->Sat LAN->Sat->WiFi backhaul->router->LAN->desktop
It is really cumbersome to remove that gig switch because half of my house connects to the Orbi through it (all the Powerline devices, IP cameras, printer, etc.)
I have run computer->Orbi LAN->computer tests before, and get "full speed" on my Orbi. I cannot even come up with a conceptual idea for how adding a switch to the mix can make speed faster.