I am trying to connect my Xfinity Cisco wireless gateway/router to a net gear 16 port gigabit Ethernet switch. When I do this, devices connected to the netgear switch either cannot connect to the internet or experience extremely slowed/delayed response. When I connect my latopt directly to one of the gateway ports and run speedtest, I have no problem. Download speed is 100mbps. Is there any set up I need to perform to connect a switch to the router to enable traffic through the switch?