ContributionsMost RecentMost LikesSolutionsModem or router problem? Hello all, My TP Link router crashed. Brick kept restarting every 10 seconds. So I went back to my old DLink DIR615. The modem from Cox is a Cisco DPQ3212 from 2013. Since I did that, my internet keeps going out every 5 to 15 minutes. I think it's the router re-booting, but not sure if it's the Cable Modem.So, that brings me to a few questions. 1) How can I tell if it's the modem or router? I've reset and tried a few things with the router settings, but no luck. 2) If I need new hardware, would it be better to get a docsis 3.0 modem/router combo, or try a new router only? Thanks for any tips, Doug B