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Forum Discussion
Staggs0226
Oct 13, 2025Aspirant
No internet after switch is plugged in
I have a GS305v3 unmanaged switch that I just bought and attempted to use. It is connected to my internet via cat6 cable that I ran from my office in my house where my router/modem is located, to my ...
plemans
Oct 14, 2025Guru - Experienced User
Whenever I read "ran my own cable", I get suspicious of the cable connectors. Did you connect your own ends? Some devices are more sensitive to sketchy cables than others. And even a wire tester won't pick it up becuase its just passing a current, not data. So I'd follow what StephenB recommends and try the switch right by the router with a different cable. If it works there, time to check the cable ends for how they were terminated.
StephenB
Oct 14, 2025Guru - Experienced User
plemans wrote:Whenever I read "ran my own cable", I get suspicious of the cable connectors.
Me too, which is why I suggested testing the switch in the same room of as the modem/router.
This particular switch supports energy-efficient ethernet, which might not work correctly with Staggs0226's particular cable (including the connectors).
FWIW, insulation on cables designed for in-wall use is different from normal patch cable - often building codes require plenum-grade or riser-grade cable. That doesn't affect performance, but using a normal patch cable can create fire safety issues.
- schumakuOct 14, 2025Guru - Experienced User
StephenB wrote:
This particular switch supports energy-efficient ethernet, which might not work correctly with Staggs0226's particular cable (including the connectors).
Myths and legends? Sorry, this is pure nenesense !
- StephenBOct 14, 2025Guru - Experienced User
schumaku wrote:
Myths and legends? Sorry, this is pure nenesense !The datasheet includes 802.3az Energy Efficient Ethernet
- https://www.downloads.netgear.com/files/GDC/GS316v3/Gigabit_Unmanaged_Essentials_Switch_DS.pdf
- https://kb.netgear.com/31291/What-is-IEEE-802-3az-Energy-Efficient-Ethernet
There are (or maybe were) some chipsets that go beyond the standard, and set the power level based on a cable length estimate, and also put the link in standby status when it thinks the link is not in use.
No idea if this particular switch includes those extra features.
I have sometimes seen issues with this tech, which were resolved on managed switches by turning this feature off.
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