Wifi works, wired connections do not.

[ulimit]

Just recently bought a switch to allow for stable wired connects because my router couldn't handle more then two without causing instability. However I have hit a snag.

The networking setup is a Netgear CM700 Cable Modem, through Comcast, plugged into a TP-Link TL-SG108E switch. The TL-SG108E has two cables coming from it, one going to a Netgear WNR1000v3 wireless router and the other is a wired connection to my desktop.

I can tell there is no hardware issues because Wifi works perfectly. However my desktop doesn't seem to be able to get an internet connection from the switch. The desktop is able to connect to the switch and I've been able to change both my desktop and the switches IP's and subnets from the desktop, so it seems there is no issue in the connection between the two. I just can't seem to figure out how to actually get my desktop to connect to the internet.

Any help would be appreciated.

 

[kanewolf]

You can't go modem->switch -> devices (including router). Because your ISP only provides one public IP address, the first device that connects will get that IP address. The rest won't get an address.
You HAVE to go
modem->router->switch->devices. That is the only way it will work.

 

[ulimit]

You can't go modem->switch -> devices (including router). Because your ISP only provides one public IP address, the first device that connects will get that IP address. The rest won't get an address.
You HAVE to go
modem->router->switch->devices. That is the only way it will work.

So two questions on this. Does the fact that my Wifi currently works and that direct lines from the router to computers works mean that the switch is simply passing that single IP address to the router (it was the first connected device) or is some tomfoolery taking place?

Secondly since the TP-Link has a DHCP option, would enabling that allow for my current setup to work?

 

[bill001g]

That is why the router works, if you were to reboot the modem and connect your PC first then the pc would work and the router would not.

I don't think that switch does DHCP that is a function of a router. It would make a massive mess if it gave out IP addresses and did not actually do the NAT function. Now if you were to place a different router in place of your switch then it would work.....but that is a different design than what you talk about.

 

[ulimit]

That is why the router works, if you were to reboot the modem and connect your PC first then the pc would work and the router would not.

Okay I was afraid that was the case, but it makes sense.

I don't think that switch does DHCP that is a function of a router. It would make a massive mess if it gave out IP addresses and did not actually do the NAT function. Now if you were to place a different router in place of your switch then it would work.....but that is a different design than what you talk about.

The TP-Link switch I bought does have a DHCP option which is currently disabled though I don't know enough about the switch and networking to know if it's implemented in a way that would allow it to work similar to a router, which is similar to how I intended to use it.

I plan on just switching my devices around to the suggested order and I will just buy a new router if it still proves to be a weak point.