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Forum Discussion
rayjai
Jun 15, 2022Guide
RBR750 unable to assign IP addresses after reboot
Hi, every time I reboot or unplug my router to move it, all my devices will disconnect and will have an "unable to assign IP addresses" error. I have 48 devices and all of them will not connect. I wo...
raven_au
Jun 19, 2022Virtuoso
rayjai wrote:
It happened again after I rebooted changing "enable ax" option. Is there a way to force the IPs to reset?
No, the problem isn't the IPs needing to be reset.
It sounds like you are seeing a problem where the DHCP server on the router stops issuing addresses.
In my experience the problem shows up when you get a larger number of devices probably more than 40 or 50. I have around 80 now.
I don't know if your problem is actually the same as what I'm seeing but what I have done recently is below.
If you use a different server as the network DHCP server (for example a NAS that's always switched on) the problem disappears completely.
Recently I've changed the DHCP range on the Orbi to 2-249 because the Orbi satellites transition through having an IP address ending in 250 which means there's always a possibility of an IP address clash and that is bad for the network.
Then when I reboot and see the number of devices increase but then start falling and verify some of my devices can't get an IP address I change the range to 2-248 and apply, then if things are still broken I change it back to 2-249 and apply and continue until all my devices are getting IP addresses ok again.
rayjai
Jun 19, 2022Guide
Your issue sounds very similar to mine. The only things I have running 24/7 are the smart switches.
Where do you go to change the settings you mentioned?
Where do you go to change the settings you mentioned?
- raven_auJun 19, 2022Virtuoso
rayjai wrote:
Your issue sounds very similar to mine. The only things I have running 24/7 are the smart switches.
Where do you go to change the settings you mentioned?I go to Advanced -> Setup -> LAN Setup.
The Field to look for is "Ending IP Address".
It should be obvious this restricts the range of addresses the DHCP server considers
it owns that it can use for clients.
- rayjaiAug 26, 2022Guide
Is it possible to have the routers on 192.168.1.xxx but my devices on 192.168.2.xxx?
- CrimpOnAug 26, 2022Guru - Experienced User
rayjai wrote:
Is it possible to have the routers on 192.168.1.xxx but my devices on 192.168.2.xxx?
Previous Orbi routers placed devices on the primary network and devices on the guest WiFi network in the same IP subnet. I believe that the newer AX products place devices on the primary network in IP subnet and devices on the guest network in a separate IP subnet. The typical subnets used are 192.168.1.x for the primary network and 192.168.2.x for the guest network.
(Someone please correct this if my impression is incorrect.)
- rayjaiAug 26, 2022Guide
It seems like all my devices and routers are on 192.168.1.xxx
every time I reboot, a conflict happens between the routers and devices.
- rayjaiAug 27, 2022Guide
I think I see the routers are trying to set 192.168.1.250. everytime I reboot all my devices say there is an IP conflict and I can't connect to the wifi.
- raven_auAug 27, 2022Virtuoso
rayjai wrote:I think I see the routers are trying to set 192.168.1.250. everytime I reboot all my devices say there is an IP conflict and I can't connect to the wifi.
The Orbi satellites appear to always start out with a .250 address and if the DHCP server decides to stop allocating addresses they stay at that address. Stupid really as .250 is within the default DHCP allocation range so a conflict is possible.
I set my DHCP range to 2-249 to avoid this possible problem.
- FURRYe38Aug 27, 2022Guru - Experienced User
No.
Try setting the Default IP address pool range to 192.168.1.100 thru .200. Then this will give you a pool size for IP address reservations ON the router and IP address ranges on either side of the pool for static assigned IP addresses that are set ON devices.
What FW version are you using?
rayjai wrote:
Is it possible to have the routers on 192.168.1.xxx but my devices on 192.168.2.xxx?
- rayjaiAug 29, 2022Guide
Thank you, where do I change the DHCP range? Under Lan setup?
- rayjaiAug 29, 2022Guide
my FW is, 4.6.5.14
if I end the range at 200, can I still reserve IPs at 201 - 249?
- FURRYe38Aug 29, 2022Guru - Experienced User
No, the .201 thru 254 range is available for static IP addressed devices.
You might consider updating FW as well:
- rayjaiAug 29, 2022Guide
Sorry, when you mean static IP devices, you mean the devices I have listed under Address reservation?
Like i can set my printer to 201 in Address reservation? or do I need to change the printer IP address within the printer?
Thanks
- FURRYe38Aug 29, 2022Guru - Experienced User
IP address RESERVATIONS are set ON the router with in the IP address pool range. STATIC IP addresses are addresses that are set ON devices. These are out side of the IP address pool range. These are two different items.
For an IP address RESERVATION on the printer, would be inside the IP address pool range. You can set a static IP address ON the printer that's outside of the IP address pool range. I do this for my 3 printers, as they don't need any router management and the IP address for these printers never changes.
- rayjaiAug 29, 2022Guide
I see, thank you for clearing that up for me. I'll look into this.
- FURRYe38Aug 29, 2022Guru - Experienced User
👍
- raven_auAug 30, 2022Virtuoso
I've had lots of problems with the DHCP server.
It has been worst on the AX routers (my 850 series) but I have also seen it (occasionally) on the 50 series.
The symptom is the DHCP server simply stops issuing IP addresses.
Excluding address .250 from the DHCP address range has improved the situation a "lot" but I'm not sure if this is the only problem with the DHCP server.
At least my Orbi is usable now, 😉
- FURRYe38Nov 20, 2022Guru - Experienced User
- rayjaiNov 20, 2022GuideYes, I updated the firmware, rebooted and it messed up again. I tried to contact support and we go through the same troubleshooting on hard resetting. To them it's "fixed".
- FURRYe38Nov 20, 2022Guru - Experienced User
What version of FW is loaded on your system now?
What devices do you all have connected to the system?
Has a factory reset and setup from scratch been performed since last FW update? A complete pull of the power adapters for a period of time after the factory reset then walk thru the setup wizard and setup from scratch.
I recommend also changing the default DCHP IP address pool size to .100 thru .200 as well after the reset.Also enable ALG SIP on the router as well.
rayjai wrote:
Yes, I updated the firmware, rebooted and it messed up again. I tried to contact support and we go through the same troubleshooting on hard resetting. To them it's "fixed". - tucsonticoNov 20, 2022Virtuoso
I'm installing the new firmware later today. Will let you know if I have any issues.
- FURRYe38Nov 20, 2022Guru - Experienced User
I recommend also changing the default DCHP IP address pool size to .100 thru .200 as well after the reset.
Also enable ALG SIP on the router as well.
tucsontico wrote:
I'm installing the new firmware later today. Will let you know if I have any issues.
- tucsonticoNov 20, 2022Virtuoso
Just did the update to firmware 4.6.11.1_2.3.6. After a reboot and power down, I brought the RBR up first, allowed it to stabilize for 5-10 minutes. I checked the Guest Network. The RBR was not radiating the GN. I then powered up the nearest RBS. (My setup is a daisy-chain with 2 sats.) After it stabilized for 5-10 minutes, I checked and now the GN was radiating on the 2.4 gHz band. I powered up the second RBS and after stabilizing it was not radiating the GN. So the RBR and one sat are not radiating the GN. Only one sat is showing the GN being on even though it is NOT enabled. (BTW, I did not do a factory reset.)
To see if I could "fix" the GN issue, I enabled the GN at the RBR web GUI. I checked and all the RBR and RBSs were radiating the GN. I then disabled the GN. Now the GN is not radiating. However, I'm not convinced this will be a long term solution.
I have not seen any issues regarding assigning IP addresses. All my 42 devices have IP reservations and I never had any issues with the reservation not "sticking" or not being able to assign an IP address in the previous firmware or this version.
I have SIP ALG disabled and use .1-.60 for my DHCP pool. What is the rationale for enabling SIP ALG and changing the DHCP pool to .100-.200?
- rayjaiNov 21, 2022Guide
I am on V4.6.11.1_2.3.6.
After the reboot I had IP assignment issues. Even trying the reboot from restoring the configuration causes this.
I have Laptops, PC, phones, Consoles, Smart switches, smart home devices connected.
I have about 89 connected devices.
- tucsonticoNov 22, 2022Virtuoso
Darn! After about 36 hours of up time on the newest firmware (V4.6.11.1), my one sat began broadcasting the Guest Network again. 😫 I confirmed the GN is not enabled and it shows that on both the web-based GUI and in the ORBI app. I have not done a factory reset on any of my ORBI devices since the firmware update. It appears as only 1 sat is radiating the GN signal on the 2.4 gHz band.
I will try a factory reset of that RBS, then do a reconfiguration from scratch for just that sat. Cannot do that until after Thanksgiving. Will report results when completed. Wish me luck!
- FURRYe38Nov 22, 2022Guru - Experienced User
Perform a full factory reset on both router and satellite(s) then set up from scratch. Do not load any saved backup configuration files.
I recommend also changing the default DCHP IP address pool size to .100 thru .200 as well after the reset.
Also enable ALG SIP on the router as well.
rayjai wrote:
I am on V4.6.11.1_2.3.6.
After the reboot I had IP assignment issues. Even trying the reboot from restoring the configuration causes this.
I have Laptops, PC, phones, Consoles, Smart switches, smart home devices connected.
I have about 89 connected devices.