Ethernet cable

Chrisvdmeer · 2024-12-22T15:55:35+0000

Ethernet cable problem

Hello, I have a 400mbps internet contract. When I plug my Ethernet cable into the modem->straight into my laptop I get my 400mbps. When I plug my Ethernet cable into one of the outlets trough the house I only get a 100mbps. All the cables are CAT6 and I’ve tested all of them. When I use them straight out of the modem they just give 400mbps. Speed & duplex is set to auto negotiation.
I would really appreciate some help

Thanks.

Moley · 2024-12-22T16:06:28+0000

How do the ethernet cables around the house connect to your modem? I assume you are going through a switch? What's the max speed of the switch? What speed do you get if you connect the laptop direct to the switch ?

Chrisvdmeer · 2024-12-22T16:08:41+0000

Moley said:
How do the ethernet cables around the house connect to your modem? I assume you are going through a switch? What's the max speed of the switch? What speed do you get if you connect the laptop direct to the switch ?

Cable are going from the modem trough the wall to a CAT6 switch. The cable that is running trough the wall is connected to the switch with RJ45

Chrisvdmeer · 2024-12-22T16:14:21+0000

Moley said:
How do the ethernet cables around the house connect to your modem? I assume you are going through a switch? What's the max speed of the switch? What speed do you get if you connect the laptop direct to the switch ?

I don’t use a network switch, cable is going from the modem to a wall outlet, in the wall outlet I’ve got another cable plugged into the computer

Moley · 2024-12-22T16:15:21+0000

What model switch? What speed do you get if you connect the laptop direct to the switch with a patch lead?

Moley · 2024-12-22T17:07:42+0000

In your first post you say you can plug into any of the outlets in the house and only get 100mbs. Going by this I assumed that you had a switch. How are the other outlets connected if you don't have a switch? Have you just daisy chained all the outlets together?

freddo · 2024-12-22T19:29:21+0000

Some cheap patch cables only have 2 pairs instead of 4, this will limit the speed to 100Mbps. If you are using different cables to the ones that are working.

plugsandsparks · 2024-12-22T20:25:50+0000

I think his modem has switch ports that he is extending through the building wiring, that is what i think is happening. As already mentioned it could be the building wiring may not be to the same configuration as necessary for greater than 100M/s . OP needs to get a cheap RJ45 tester and check wiring is equivalent to an 8 wire patch.