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Forum Discussion
schadan
Mar 30, 2023Guide
Orbi RBK850 in AP mode can't connect to satellite
Hi, seems that my problem is not new but I was not able to find a working solution: I'm running a Orbi RBK850 together with two RBS850 in my home network. I've done first the setup of the whole syste...
- Apr 01, 2023
Hi,
the problem is solved 🙂
A simple cause had a big effect - I could see in the pfsense fw logs that outbound icmp was blocked - seems that the RBK is pinging to some cloud front systems regularly to see whether it has an internet connection. After enabling it it worked like a charm, the gui shows internet connection & I was able to sync both satellites.
Now I only have one small (not really urgent) problem left & that is that I'm getting (only on the RBK) a http 500 when connecting to the WebGUI via DNS name in the URL - using the ip address instead is working. But for this I will open another thread.
Thank You very much for Your help, really appreciated 🙂
CrimpOn
Mar 30, 2023Guru - Experienced User
It would be helpful to know:
- What ISP device is the Orbi router connected to?
- Where is the Raspberry Pi located? i.e.
- Is it "upstream" of the Orbi router? perhaps connected to the ISP router?
- Is it connected to the Orbi router?
- When in router mode, which device was supplying the WAN IP to the router?
- ISP router, or
- Pi
I agree with FURRYe38 , when switching the Orbi from router to AP mode, there is no need to power off the satellites unless the changeover is complicated. such as no Pi in router mode, then use Pi in AP mode? Maybe changing router IP subnets?
Perhaps there some confusion over LAN subnets? When in router mode, the Orbi LAN subnet must be different from the WAN iinterface subnet. i.e. if the Orbi router receives 192.168.xx.yy as its WAN address, then the LAN subnet can be any private subnet that is not 192.168.xx When in Access Point (AP) mode, the router WAN interface and all the devices attached to the LAN side are all in whatever IP subnet is being used by the upstream DHCP server.
schadan
Mar 30, 2023Guide
Hi, the ISP device is a Fritzbox 7490. The RBK is connected via LAN port to a switch -> Fritzbox. Connecting the RBK via WAN port was not working and causing a flickering WAN connection. The RASPI is connected via the mentioned switch.
Regarding the satellite connection I tried the ethernet backhaul via direct connection to a LAN port on my RBK, but I‘d really prefer to have a wireless backhaul.
- FURRYe38Mar 30, 2023Guru - Experienced User
The RBR in AP mode has to be connected to the host router using it's WAN port while in AP mode.
What is the brand and model of the switch being used?
- CrimpOnMar 30, 2023Guru - Experienced User
There is probably a reason for deploying DHCP on the Pi rather than using the Fritzbox 7490 DHCP feature?
(what with ISC DHCP being End of Life and all) https://www.isc.org/dhcp/
So this is what it looks like?
- schadanMar 30, 2023Guide
Hi, yes, the diagram fits quite well. Yes, I know about the EOL of isc-dhcp-server. The switch is a tp-link tl-1008 unmanged desktop switch.
As described connecting the RBK850 via WAN doesn‘t work unfortunately. What would be the reason why connecting via WAN port when the RBK is in ap mode would make sense? Thanks.