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Forum Discussion
DHCP issue with ORBI RBK50 configured in AP mode
I recently replaced my old Apple Airport Extreme by a brand new Orbi RBK50. I'm running the last FW 2.2.1.210.
The Orbi (RBR) is configured in AP mode and one satelite (RBS) is configured in wireless backhaul (non daisy chain topology).
I'm experiencing a DHCP issue when my wireles devices try to connect to my Orbi (RBR). Most of the time, my wireless devices connect to ORBI (listed as list of connected devices in admin page) but don't get network information from the DHCP server located in front of my Orbi (ip address, network mask et gatewey ip). It occurs with all my wireless devices when trying to connect to the RBR.
The funny thing is that it works sometime.
here is a brief description of my network topology:
A modem cable with Wireless disabled -> a 24 port Cisco switch -> Orbi RBK 50 conected to one port of the switch via Orbi WAN port -> wireless devices connected but with not assigned network information.
I used the exactly same topology with my previsous Airport Extreme device (configured in AP mode and located at the same place as the brand new Orbi).
Any idea ?
Thanks in advance for your help.
9 Replies
When you set Orbi to AP mode you get a question about IP addressing responsibility as follows:
1) Depending on what you selected, Orbi will direct all Attach requests from devices to the router or not. Please check this setting
2) Is the DHCP server address defined in your router?
Hi,
Thank you for your reply!
When configuring AP mode I selected the first option "Get dynamically from existing router".
Orbi as an AP did recieve an IP from the fronted switch (acting as a DHCP server). The IP recieved from the switch is in the good range.
It means the communication between Orbi and the switch is working well.
My wireless connected devices sometime receive an IP in the same and good range but most of the time recieve an IP from the "default range" 169.254.X.X with no gateway and an incorrect network mask which correspond to no connectivity ...
Of course, everything goes well If my wireless devices recived a good network address configuration and vice versa.
Strange behaviour knowing that my previous Apple Extreme worked fine in the same topology and configuration during 5 - 6 years.
Best Regards.
Nicolas72 wrote:
Hi,
Thank you for your reply!
When configuring AP mode I selected the first option "Get dynamically from existing router".
Orbi as an AP did recieve an IP from the fronted switch (acting as a DHCP server). The IP recieved from the switch is in the good range.
It means the communication between Orbi and the switch is working well.
My wireless connected devices sometime receive an IP in the same and good range but most of the time recieve an IP from the "default range" 169.254.X.X with no gateway and an incorrect network mask which correspond to no connectivity ...
Of course, everything goes well If my wireless devices recived a good network address configuration and vice versa.
Strange behaviour knowing that my previous Apple Extreme worked fine in the same topology and configuration during 5 - 6 years.
Best Regards.
The only thing that I can think of now is: When you changed from the Apple Airport to Orbi, did you use the same SSID? I'm afraid that your devices still have the routing information that it got when it initially attached through the Apple Aiport which I'm not sure if it will be correct to use with Orbi.
Does forgrtting the network from the device and attaching again help? Otherwise a change of the SSID woths also trying!
