Network switch can't access internet behind router
January 2, 2013 3:01 PM Subscribe
Why can't devices on my new 8-port switch get internet access on my network? I’ve got a new wired network set up in my house and am fine tuning it, getting everything to connect to the internet… Main computer and xbox are working (connected directly to D-Link DGL4300 Wireless router), but the Tivo and anything plugged into the new switch-based jacks aren’t getting to the internet, though they see the network.
Here’s the network layout:
Comcast Cable --> Cable modem --> Router --> Trendnet Gigabit 8-port switch wired from router in upstairs bedroom to the termination point for all wiring in the downstairs closet, where the switch is located.
That switch feeds plugs in the kitchen (1), downstairs bedroom (1), TV room (2), upstairs bedroom (1).
Basically, every plug that comes off of that switch can see the network, but cannot connect to the internet. The Tivo’s network test says that it can’t find the DHCP server. Plugging the laptop directly into the router works fine, as does connecting via wireless.
I've reset the configuration on my router to factory defaults, with no change. All new wiring tests okay. I have shut down everything and brought it all back up from the cable downstream to the devices, with no change. I was able to get the Tivo connected to the internet briefly, after a modem reboot, but then the main computer/router etc wouldn't connect.
Are there specific configuration changes I need to make on my router to allow a downstream switch? What am I missing?