[General Maximus]

technically it shouldn't do and a normal proper router definitely doesn't as the wan interface and route is just one of the many connections the router maintains and if it goes down it shouldn't effect anything else. That being said, the shub isn't a proper router, I have heard of this happening before and it doesn't surprise me in the least.

It sounds like a fairly insignificant problem and one which you wouldn't want to spend money on but all the little problems and quibbles add up and if this is something which continues to bother you I would seriously consider putting the shub in modem mode and investing in a proper router. I have had one from day one for the last 19 years and thus have never succumbed to the myriad of shub issues. One thing to point out as well and this is important, if you do decide to spend some money make sure it is on a new router and not additional switch. You might think you are creating your own little loop independent of the shub if you buy your own switch but I have also heard of the shub taking out connected switches when they go down, which again, should never happen. Best thing you can do is relieve the shub of all routing responsibilities and then you don't have to worry about it breaking anything.

I am like you and have got 2 NAS', TV's around the house, sky boxes, printers, pc's, laptops etc etc and I want the peace of mind that everything can connect seamlessly and will work 24/7 without any dramas. I order to achieve that I have got Asus routers strategically placed around the house for wifi coverage but more importantly a cable running to a Linksys switch in every room. This results in all my static devices have a 1gbit connection running to my primary Asus router and I know that all my devices can talk to each other because I have kick ass switches and routers which I never had a problem with (and don't get me started on the benefits of non-VM DNS).