RBS 750 out of sync after rebooting the router

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centaros wrote:

Hi raven_au,

 

In the web GUI, it was showning the satellite as "Disconnected" so I eventually removed to re-add after powering it up multiple times.  The other satellite's status is good.

Since I have removed the satellite currently the GUI only shows only one satellite which is the working one.

 

I see some of my apple homekit devices are not responding.

I restarted my iPhone and event this one has problem connecting to the wifi. I see the check mark in the Wi-Fi screen of the settings app, but its status bar at the top still shows LTE.

What I was after here was to check if the router DHCP server had stopped giving out IP addresses.

If you try and re-connect a device such as an iDevice then (IIRC) they will just sit there with a spinning wheel looking like they are continually trying to connect, they might eventually show a message such as no internet, not sure. My Andriod phone is quite specific when this happens, it says Getting IP address and after a while says it couldn't get IP address so I know the DHCP server is no longer working.

I'm not yet certain but I'm pretty sure that satellites will show up as having an IP address ending in 250 because they can't get an IP address from the router and show an amber light indicating they aren't working properly. But that assumes the satellite is part of a kit (an RBKxxx) so they auto-sync and show up in the web UI even if they aren't quite working. If it's an add-on satellite I think they will end up with a solid white light indicating they are ready to sync. after a pin hole button reset but of course if the router isn't giving out IP addresses the sync won't work and they'll probably end up with an amber light after the sync. again. Not sure if these will show in the router web UI in this case particularly if they have been removed buy hitting the "remove" button.

Once the router stops giving out IP addresses there's not much you can do.

Re-booting the mesh can sometimes work but, and I'm also not certain about this yet either, it depends on how many devices you have trying to connect at once at the time of the re-boot. More than about 40 can make it hard for the reboot to succeed and it stops giving out IP addresses again.

One time I was able to get  a successful reboot after an hour trying but most often I have to resort to a factory reset and re-configure.

Now I have delegated the DHCP function to my NAS (and disabled it on the router) things seem to be much better but I also haven't needed to re-boot in a while either so still not sure.

I suspect that FURRYe38 may have encountered this problem too and leaving the mesh devices powered off for some time  (overnight for example) causes devices to throttle back their re-connection attempts so that when the mesh router and satellites are again powered on there isn't such high flood of DHCP requests so the DHCP server survives.