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Forum Discussion
Orbi SXR30 Magenta light - repeatedly loses internet connection
Model SXR30 firmware version 4.2.0.122 I see many posts here as well as elsewhere on this. I loved this product until about a month ago and now it is very flaky. It will randomly drop its interne...
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
What all do you have connected to the SXR?
Any LAN switches by chance?
Notice any ARP Storms happening on the LAN?
Can you access the SXRs web page still?
The router is connected to my ISP (Xfinity) via an Arris SB8200 cable modem.
I have two netgear switches, daisy changed downstream from the router. I can access the orbi maintenance page (192.168.1.1) even when the WAN connection has dropped.
On the SXR, I have the switches, and a single receiver for the solar panels on my roof. That receiver has a little antenna to get data from the panels, which then sends the production data to Tesla over ethernet.
Are you suggesting I use tcpdump or something to determine if there is an ARP storm? I cannot imagine anything I have would send ARP storms.
Does the SXRs web page show that the internet is down when this happens?
What are the model #s of these switches?
How often does this happen?
One way to check for ARP storm is to look at the switches All LED activity. If there all constantly flashing or ON, means there a ARP storm happening. LED activity should be random blinking unless your downloading or streaming something on a particular device. I saw this yesterday after putting my SXR30 online with a CM2000. I don't know if turning on a ethernet connected SXS30 triggered it or not. I wasn't looking at the front LED until I happened to see one of my switches constantly blinking. Then looked at the SXR and front LED was PINK.
I'm going to try a reset and setup from scratch and put it online and test the SXR alone with one PC, then add in the network, see what happens, then try adding the SXS. This storm doesn't happen with my other routers.
If you downgrade let us know the results.
The topology is SXR30 -> Netgear GS108 switch -> Netgear GS105 switch -> laptops
23 or so devices on wifi.
This router failure happens randomly. It happened 2 weeks ago and I fussed with resetting, powering off the cable modem, resetting to factory, checking firmware, etc. Nothing was stable, then it just as randomly started working again. I highly suspected my ISP, but there were no outages and everything looked normal. The fact that this has happened to others made me wonder.
In the failure case, the SXR is stuck "waiting" for internet. Even after I downgraded, it went into that state...I then released and renewed it's external IP address and it worked. BTW, it got the exact same IP and DNS servers as before.
It's as though the SXR is losing it's IP address and either it doesn't renew it's lease (or fails when it tries) or it doesn't renew at all.
I'll post back from time to time if the downgrade holds (and will post again if it doesn't).
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