I had similar Internet re-connecting problems using my Cisco Linksys E4200V2 router. It seems the Cisco Linksys maximum transmission unit (MTU) Auto 1500 setting causes re-connection issues (sometimes). Cisco Linksys Customer Service said to change the MTU 1500 setting to manual at 1392. As they instructed, I also changed the channel width to 20MHz and the channel to 9 - 2.452GHz. Since I made these changes, the re-connecting problems have gone away. I suggest you review these settings on your router. I suggest you call your Router Mfg and ask them about the MTU setting options. I do not know if this will fix your problem but it is worth a try. Please let us know if it works.
I switched over to using an Apple Airport Extreme router and have no problems. I am using a MAC Book Pro computer.
I switched over to using an Apple Airport Extreme router and have no problems. I am using a MAC Book Pro computer.