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Router, switch question
Posted on 1/10/26 at 1:16 pm
Posted on 1/10/26 at 1:16 pm
I am exceedingly ignorant to this, so bear with me.
I have a TP Link SG1005P switch connected to an ATT router. The switch is not providing any connectivity to device plugged into it via Ethernet. Looking in the network menu of my MacBook when connected to the switch, it says that it’s connected to Ethernet but has a self-assigned IP address and will not be able to connect to the internet.
When I plug the Ethernet cable straight from the router to my MacBook, it connects and seems to work correctly.
I’ve dealt with issues with this switch for a long time, abandoned it, and have just started trying to troubleshoot. Is this a switch problem? A router setting problem? Tia. I have another non-PoE switch that seems to work OK when I connect it in place of the 1005P.
I have a TP Link SG1005P switch connected to an ATT router. The switch is not providing any connectivity to device plugged into it via Ethernet. Looking in the network menu of my MacBook when connected to the switch, it says that it’s connected to Ethernet but has a self-assigned IP address and will not be able to connect to the internet.
When I plug the Ethernet cable straight from the router to my MacBook, it connects and seems to work correctly.
I’ve dealt with issues with this switch for a long time, abandoned it, and have just started trying to troubleshoot. Is this a switch problem? A router setting problem? Tia. I have another non-PoE switch that seems to work OK when I connect it in place of the 1005P.
This post was edited on 1/10/26 at 1:22 pm
3
Posted on 1/10/26 at 2:09 pm to turkish
Did you plug it in to the wall wart?
Posted on 1/10/26 at 2:12 pm to Ricardo
Are you asking if the switch has power? Yes, it does.
Posted on 1/10/26 at 2:22 pm to turkish
Seems like a pretty straightforward switch. When in doubt, power everything down and power back up starting with the router and working your way to the switch and then the PC.
Edit: These devices can be pretty sensitive. I had a lightning strike years ago that only damaged my cable modem and router. It is possible that it's just damaged. Try a different port to see if it's just that particular port that's out.
Edit: These devices can be pretty sensitive. I had a lightning strike years ago that only damaged my cable modem and router. It is possible that it's just damaged. Try a different port to see if it's just that particular port that's out.
This post was edited on 1/10/26 at 2:28 pm
Posted on 1/10/26 at 3:49 pm to turkish
It’s an unmanaged switch that should be completely plug-and-play, with no configuration that could block DHCP. If it links up and appears to pass some traffic but does not pass DHCP broadcasts, that rules out settings or router issues. That behavior strongly points to a failing internal switch fabric or PHY.
A 5 port gigbit switch is cheap. Just buy a new one.
A 5 port gigbit switch is cheap. Just buy a new one.
Posted on 1/10/26 at 5:01 pm to turkish
Sounds like issue has been isolated to a faulty switch...replace it and move on
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