Why do you have to periodically restart your router?

Question

I've had linksys, apple, buffalo, etc. and they all require restarts every once in awhile. Why?

Answer 1

it is good from time to time to turn the router off  then back on after say 30 seconds or so just to clear the cache and to reset the DNS , as well as to set a new lease from the ISP , there is a way also to do it in the cmd prompt using ipconfig /release then ipconfig /renew but most people don't remember that so just turning off the router and restarting it will be fine  

Answer 2

The problem isn't your router, it's your ISP.

Call them and get them to fix the problem, or switch ISPs.

Answer 3

They lose DHCP or the ISP changes the DNS