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Orbi RBR850 Upload Speed Issue - ARP Table?
I have an issue. I have full 1GB fiber internet (up + down) from my ISP. When I initially reboot ORBI RBR850 and do hard wire speed tests (ookla) I see ~850Mbps download and ~860 Mbps upload. After 20 minutes my download speeds drop to ~600Mbps and my upload drops to ~50Mbps!!!
I have 2 RBS850 satellites connected via hardware Cat5E backhaul. All speed tests are conducted from a hardwire laptop directly connected to the RBR850 router. All devices are running the latest firmware 4.6.7.13 (I've tried downgrading to several past versions, same issue repeats on all).
I have performed full factory reset on all devices with firmware upgrades and reconfigured settings manually (no backup file uploads). The issues still persists.
My ISP claims the issue is between the ORBI router and their ONT Calix Gigapoint 803G fiber device. The Calix device has a small ARP table and clears it every 5 minutes. Per their diagnosis the ORBI device needs to send an ARP request every 5 minutes to stay in sync with the ONT. Netgear does not expose the ARP table timeout request setting so there is no way to do this. As a result the ONT ARP table doesn't know how to route traffic and results in the severely degraded upload speeds...
TBH I am not sure I buy their explanation 100% - don't understand why it only affects the upload so severely but not the download (there is a degradation of download speed, but not nearly as bad as the upload). They are bringing me one of their WiFi Routers to do additional diagnostics later this week - we'll see what that yields. Regardless of their explanation it seems the problem is isolated to the ORBI as I have done speed tests with the ISP line connected directly to my laptop and have seen no performance degradation.
Would like to get attention on this issue as it seems to be unique to the RBR850 line - I had the RBK50 system just a month ago (same hardware backhaul setup, same cables, same router config) and it never had a performance issue with upload or download speeds.
9 Replies
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
How are the RBS connected to the RBR using ethernet? Directly to the back or is there a LAN switch or wall jacks in between them?
What is the size of your home? Sq Ft?
What is the distance between the router and satellite(s)? 30 feet or more is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected.
https://kb.netgear.com/31029/Where-should-I-place-my-Orbi-satelliteWhat channels are you using? Auto? Try Auto and 48 on 5Ghz. Or try setting manual channel 1, 6 or 11 on 2.4Ghz and 40 to 48 channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update?
Be sure to restart your network in this sequence:
Turn off and unplug modem.
Turn off router and computers.
Plug in and turn on modem. Wait 2 minutes for it to connect.
Turn on the router and wait 2 minutes for it to connect.
Turn on computers and rest of network.Thank you for your response, let me see if I can answer all the questions.
ISP ONT Device Manufacturer: Calix GigaPoint 803G
Model No: 100-04255 11
RBS are connected to RBR via wired ethernet, Cat5E, going through a 1G unmanaged switches back to RBR. There are a few wall jacks in between as well. [To reiterate, all speed tests have been done directly on the RBR device, nothing in between, with Cat5E cable. Wireless tests show similar degradation of upload speed and slight loss of download speed. I am sure if the root issue is addressed the wireless speeds would reflect the improvement]
Home is ~3200 sq ft
Setup of RBS to RBR is like this: RBS (one end of home) - - - RBR (center of home) - - - RBS (other end of home). There is 25-30 ft approximately between the RBR and RBSs. Again, all RBS are connected via hardwire backhaul, Cat5e, all show wired backhaul in UI.
Wifi channels are set to: Auto for 2.4GHz and 48 for 5GHz.
I have one Wifi neighbor and they are 500+ feet away.
I have power cycled the ISP device and router many times during the firmware upgrades, troubleshooting calls and diagnostic tests. The power-off period is at minimum 1 min, sometimes as long as 10 minutes. I follow the order of reboot as specified below, modem, router then network computers.
What is the Mfr and model# of the ethernet switches in the configuration?
Are speeds to spec a the RBR if you turn OFF the RBS and the connecting LAN switches?
Is Armor enabled?
Did you power OFF the ONT along with the RBR for minute then back ON with the ONT first then RBR then test?
