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RBR850 Satellite Disconnecting Due to Possible DHCP Issues
I have an RBR850 with one hardwired satellite. After running flawlessly for the first year, sometime in the last few months I started having trouble with WiFi devices disconnecting for a few minutes at a time. And, the problem happens only with WiFi devices connected to the satellite--never the router.
I've noticed that the problem correlates with log entries recording DHCP assignments for the satellite itself. For example, this evening, I saw 25 entries for the satellite in a span of 8 minutes at the same time WiFi was disrupted for a connected laptop. I've included some log details below.
By watching affected devices when this happens, I've noticed that they also behave as if they've lost their DHCP lease. That is, they stay connected to WiFi but report a 169.*.*.* IP address. They recover once obtaining a proper address. Again--devices connected to the router are unaffected.
After reviewing the forums, I tried a factory reset on the satellite, and then upgrading to the V4.6.7.5_2.1.7 firmware (as posted here in the forums) a few days ago. Neither has made any difference.
Any suggestions or insights are most appreciated!
thanks,
Oliver
LOG DETAILS FOLLOW
Note: The satellite has the MAC addressing starting 10:0C:
[DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:15:39 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:15:33 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:15:16 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:14:56 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:14:53 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:14:52 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:14:33 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:14:32 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:14:31 [DHCP IP: (192.168.1.28)] to MAC address A0:78:17:93:AB:48, Sunday, Feb 06,2022 19:14:29 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:14:29 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:14:28 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:14:21 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:13:46 [DHCP IP: (192.168.1.28)] to MAC address A0:78:17:93:AB:48, Sunday, Feb 06,2022 19:12:45 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:12:37 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:12:07 [DHCP IP: (192.168.1.28)] to MAC address A0:78:17:93:AB:48, Sunday, Feb 06,2022 19:12:04 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:11:58 [DHCP IP: (192.168.1.28)] to MAC address A0:78:17:93:AB:48, Sunday, Feb 06,2022 19:11:58 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:11:49 [DHCP IP: (192.168.1.28)] to MAC address A0:78:17:93:AB:48, Sunday, Feb 06,2022 19:11:28 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:11:26 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:11:21 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:11:06 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:11:05 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:10:57 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:10:57 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:10:54 [DHCP IP: (192.168.1.28)] to MAC address A0:78:17:93:AB:48, Sunday, Feb 06,2022 19:10:53 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:10:52 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:10:46 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:10:03 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:09:52 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:09:37 [DHCP IP: (192.168.1.12)] to MAC address 4E:9B:E0:63:C5:C3, Sunday, Feb 06,2022 19:09:36 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:09:26 [DHCP IP: (192.168.1.15)] to MAC address 06:D7:F6:99:D8:58, Sunday, Feb 06,2022 19:09:23 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:09:23 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:09:22 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:09:20 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:09:10 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:08:50 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:08:29 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:08:19 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:08:02 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:07:52 [DHCP IP: (192.168.1.25)] to MAC address DC:FB:48:00:6F:31, Sunday, Feb 06,2022 19:07:51 [DHCP IP: (192.168.1.2)] to MAC address 10:0C:6B:58:D1:5A, Sunday, Feb 06,2022 19:07:49
Re: RBR850 Satellite Disconnecting Due to Possible DHCP Issues
The satellite connects directly to the router, without a switch. However, the old cable was CAT 5e. Turns out, it was also from the same roll used for a different run that also caused trouble a while back.
I replaced it with a new CAT 6 run, switched back to the wired backhaul, and everything is running smoothly. It hadn't occurred to me that the cable might be at fault, especially as it had worked for quite some time. Thanks for the helping in tracking this down.
Re: RBR850 Satellite Disconnecting Due to Possible DHCP Issues
Has a factory reset and setup from scratch been performed since last FW update?
Is the RBS directly connected to the RBR or is there a LAN switch in between?
What CAT# cable are you using? CAT6 is recommended.
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-satellite📡
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?
Set CTS to 500, 2304 or 2347. Save settings and reboot the router and satellite(s). Under Advanced Tab/Advanced Settings/Wireless Settings
I have an RBR850 with one hardwired satellite. After running flawlessly for the first year, sometime in the last few months I started having trouble with WiFi devices disconnecting for a few minutes at a time. And, the problem happens only with WiFi devices connected to the satellite--never the router.
The log entries create an impression that the satellite is disconnecting and reconnecting the ethernet link, almost as if there is a loose connection that is erratic.
What happens if you disconnect the ethernet cable (temporarily) to see if the situation happens again with the satellite backhaul over WiFi?
(I understand that WiFi backhaul is not as blazing fast as ethernet backhaul, but this is an almost trivial test that can be ended at any time.)
Re: RBR850 Satellite Disconnecting Due to Possible DHCP Issues
So I tried disconnecting the ethernet and using wireless backhaul instead. After five days the problem hasn't recurred, suggesting it is indeed a problem with the cable. I haven't tracked that down yet, but in the meantime, it's working reliably again. Thanks!
Re: RBR850 Satellite Disconnecting Due to Possible DHCP Issues
The satellite connects directly to the router, without a switch. However, the old cable was CAT 5e. Turns out, it was also from the same roll used for a different run that also caused trouble a while back.
I replaced it with a new CAT 6 run, switched back to the wired backhaul, and everything is running smoothly. It hadn't occurred to me that the cable might be at fault, especially as it had worked for quite some time. Thanks for the helping in tracking this down.
