Yes, a switch, a Linksys PAP2 and powerline adapters.

I've isolated the other network devices by going into a switch first now, and then 1 cable to the router.

Hi

Worth doing a search for "powerline adapter causing router to reboot". Best to rule them out, they are the devils work

Regards

Phil

So we had the ethernet going into a technicolor gateway, then linked to the hub 6 via a cable, both devices reset.

I have often wondered whether spikes on the power supply can cause problems like the one you have.

Hi

It would need to be a drastic spike, the reason being is how the power supply for the router is derived from the mains. The power-brick, now we have lighter ones, are switched mode power supplies, these take the mains AC at 240 volts and converts it to DC with a resulting DC voltage of ~ 340 volts, with components usually rated at 400 or 500 volts in the primary side.

This DC voltage is then turned on and off at a very high frequency under the control of a chip based on feedback from the output voltage, and there is no direct connection between the mains and the resulting DC voltage. Any spikes large enough to cause a blip on the output would be damaging other equipment in the home constantly, i..e a rebooting router would be the least of your concerns and things like the TV would be rebooting, PVRs, games consoles, the computer etc.

The output voltage of 12 volts (typical for routers/modems) is then switched down to even lower voltages in the device (3.3 volt or less), making it even less likely that a voltage blip (of which there are many on the mains supply) would make it all the way to the router itself.

Also the OP has said they get the same problem with a UPS.

Regards

Phil

Hi

You really need a good troubleshooting approach now to find out what the cause is:

Example:

1) Take the router prone to rebooting, have it turned on but not connected to anything including the telephone line, does it reboot now? If Yes, it's likely some interference coming in from the mains supply or a rather odd mains supply problem, or could be RFI from the air.

2) If no reboots, you can consider the power side fine, so now connect it to the telephone line and let it sync up, but connect nothing else and do not use the connection, does it reboot now? If Yes, then likely EMI coming in from the telephone line or some voltage that shouldn't be there.

3) If no reboots, connect it up to your network switch and start connecting things back to it, one device at a time, until it starts rebooting, you then have identified the problematic device.

No one can give you any other helpful advice really without the above steps taken to find the cause, otherwise it's all guess work.

Good luck.

I see the suggestion of running out of NAT table space has already been mentioned, but also some routers can reboot if the line resync's - one reason I run a separate modem and router.

In the days of O2 and BeThere broadband, some people would choose a 3db margin and some modem/routers wouldn't cope with this and reboot when the SNRM dropped too low. They should have just caused a resync, but maybe the developer thought a reboot and a resync was the same thing !!