M% main hub intermittently restarts
M% main hub intermittently restarts

I have a home internet set up with Tplink Deco M5 - I have a main hub, and 4 satelites. This has been in place and working well for 2 years, for about 2 weeks now I have seen multiple internet interuptions every day. The main hub shows a white light indicating it's setting up, internet returns after about a minute.
This is set up with the main hub connected to the modem, then to a TP Link switch, the top floor Deco is connected directly to that switch, the others are through wifi.
In troubleshooting I have ruled out;
- The modem - I can ethernet directly to this and at an outage I have a steady internet connection - so it's neither modem, external connection or ISP related
- The main hub Deco - I have switched the main hub with one of the satelites and seen no change
- The switch - I have tried a different switch
- The Ethernet cables - I have switched and tested these
- Interference - the scan shows no interference detected but to be sure I've moved the main hub away from the modem
- The main hub power socket - I've tried moving it to another socket (on the same downstairs circuit)
- Firmware/reboots - Decos are on the latest firmware and I've tried multiple reboots
- Client totals - I only have about 15-20 clients on the network, well under the 50 or so upper limit or recommended 30
- I've set the DNS to 8.8.8.8 as per troubleshooting guide
The internet works for the most part but drops out frequently enough to be a real problem. When it drops the satelites show a disconnected red LED - the main hub shows the solid white light indicating its set/setting up.
I'm running out of ideas, I don't want to bin the whole Deco set up, but it seems to be Deco as the root cause with no options.
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Disregard that last bit on the ethernet, that's all working. Unfortunately my consistent ping finished when my laptop went into sleep mode, but it's running again and I've done the credit card and various things for about an hour and no drop out yet. Will know for sure if nothing by the end of the day.
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Couple of observations, 90 minutes in, no drop outs on the internet seen and I have the Sonos back up and it's noticeably more responsive.
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@Mattjtemp Sorry, just wondering, are you seeing better performance with the Decos in access point mode? I always assumed it was better to have them in Router mode.
Wonder if I should consider switching.mine. Any other noted differences or feature losses?
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So over 10 hours in and the internet has not dropped out once and the Sonos is solid too, does this mean I had the modem as a router and the Deco too and it was causing a clash, which made the main deco hub reset and caused disruption/inconsistency on the Sonos?
If so, are the next steps to look at the modem and to try and ensure it's not acting as a router, and return the deco to wifi router mode?
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I would suggest different approach. Keep Deco mesh in Access Point mode. Rewire Deco the following way:
In Access Point mode, you do not need Main Deco between the switch and modem/router. Rewiring Deco units the way above will improve your wired LAN performance and could also improve WiFi performance.
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Ok, so I've done that, which means my set up is a little neater, is tht a permanent thing, I did a quick google on the differences but is there anything sunstantive I'm losing?
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Just keep this setup, it is the best you can have for Deco mesh running in Access Point mode.
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@Alexandre. Hi Alexandre, sorry to resurrect this and I understand if you can't help - but I kept the setting and everything was stable. Recently I moved ISP to Virgin and got their 1Gig router which allows for modem only mode. I wanted to test, so when set up I changed my TPLink Deco M5 set up to router mode and I enabled modem only mode on the Virgin router, everything worked for a day then the exact same intermittent reboots of the Main hib M5 started happening, and again, stabilised when I reverted back the Virgin to run as the router and switched the M5 to access point.
I'd ideally prefer to get the router functionality from the Deco M5, but am wondering if the M5 just can't handle being a router or if Im missing anything, only other thing I can think of is if the Sonos is interfering this time. What do you think, are M5s just not really able to work as routers?
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