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Ethernet Problems, Please Help. (alien.top)

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

3 comments fedilink hide all child comments

I have an issue with my Ethernet.

We have a CM2000 Netgear Modem, and an AXE7800 Netgear router, both of which are compatible with COX based on their website.

We also have 1000 Mbps service.

Two computers are connected to the router via 50' Ethernet cables.

Computer 1 (Francis) is able to achieve 800 Mbps speeds on Ookla (SpeedTest.com)!

Computer 2 (Sherplette) will not, for the life of me, get over 100 Mbps down, it inconsistently fluctuates between ~60-90Mbps down/~1mbps up.

I have tried the following:

Replaced the Ethernet cable.
Purchased New Ethernet adapters, 2.5gbps/1Gbps/100Mbps PCIe Controller and a USB-C To RJ45 Ethernet adapter.
Disabled Large Send Offload.
Restarted both router and modem, millions of times.
Switched which LAN ports the cable is connected to on the PC and the Router.
Set IPv4 DNS to Google Standard.

If somebody much more intelligent than me would kindly help me out, for nothing more than my eternal gratitude, you would be my savior.

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[–] [email protected] 1 points 1 year ago (2 children)

The key thing you pointed out was:

"Connected PC Directly to Modem, Finally got speeds of 1100 Mbps"

That suggests that that the source of your problem lies with the AXE7800, or the cables connecting the AXE7800 to your modem and/or PC.

Which port is your computer connected to on the AXE7800? LAN1, LAN2?

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

Thank you! I’ve connected my computer to LAN1 and LAN2 with no difference.

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

If you cap out around 90Mb, the first suspect is the cable, since a defective cable will still allow a 10/100 connection, while Gigabit connectivity fails.

But, you had already mentioned that your link speed was showing as 1Gb.

Hopefully, that 1Gb speed wasn't manually set in the ethernet adapter settings. Can you confirm that your speed and duplex in your adapter settings are both set to "Auto" ?