Thread moved to the correct section.
If you have issues with your network it may be easier to assign static IP's to all devices. Static IP's means the IP never changes. When set up through dhcp, sometimes the IP will change. Most of the time issues may arise when you network a printer, as it doesn't always keep the same IP for some reason.
If you need to set up static IP's then you need to access the tcp/ip settings and do it there.