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PC can't connect to internet behind switch (alien.top)

submitted 1 year ago by [email protected] to c/[email protected]

5 comments fedilink hide all child comments

Hi y'all.

I've recently purchased a new PC and was trying to set it up.. Fresh new windows installation, so far so good, but when I plugged in the network cable in, it wasn't able to connect to the network. The setups I've tried are as follows:

Network cable directly from the wall socket into the PC, internet works.
Network cable from the wall into unmanaged switch (Netgear GS105), from that switch to the PC, doesn't work. All other devices connected to the switch work fine.
Network cable from the wall into an "ethernet splitter" (1-in-2-out... I don't quite know the name of the thing), one from the splitter into the switch, the other into the PC, doesn't work, but the other devices connected to the switch work.

I've also tried a bunch of different cables, but nothing seems to work, other than connecting the PC directly with the cable to the socket in the wall. Since I only have 1 socket, I need to have a switch in between for everything else... I've looked on the interwebs but none of the problems seem to be mine.

My mainboard in the PC is the ASUS B760M-PLUS.

Any help would be appreciated.

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[–] [email protected] 1 points 1 year ago (1 children)

Needs more information.

What is the link status for your ethernet connection on the PC when you connect it to the switch, vs. directly to the wall socket?
What IP address does ipconfig report when connected to the wall vs. the switch?
What's on the other end of the wall socket? An ISP router/modem?

[–] [email protected] 1 points 1 year ago

The link status reports "no valid IP address" for when the PC is connected to the switch (At least that's what the troubleshoot thingy in windows tells me). When it's directly connected to the port in the wall, it's working as expected, no connection issues what-so.ever - So I don't know what "link status" that would qualify as... The lamps on the switch and the back of the PC are all behaving the same - link is green and the orange data light (at least that's what I think what that's for) is on - no matter what is plugged where, all the same.
IP address reports a 169.***, with subnet mask 255.255.0.0 when connected to the switch and not working. When it's "working", then it's a 172.*** with Netmask 255.255.255.0.
I don't know what's on the other side of the wall - since the appartment complex is fully equipped with everything. I could ask what's behind the wall, but I don't know when or if I would get an answer for that. Not sure if the staff here knows what I'm talking about from the few interactions I've had with them.