Question Issue with link speed being capped to 10 mbps

[Fireflasher361]

Hello, every time I start my computer I'm limited to 10 mbps and have to unplug and replug back in my ethernet cable several times before it randomly just goes back to 100 mbps limit in the Link Speed (receive/trasmit) tab in network settings. I tolerated doing this whole ritual for a while but now it's getting old and I'm annoyed. I'm supposed to be getting 1000 mbps but I've given up on that and am satisfied with 100. Ideally Id like it to be 1000 but it doesnt matter too much if I cant. How can I fix this? I dont think this is a cable issue. I got a new cable recently that's high quality and it's still happening. I also had a technician from my ISP test the cable while he was here for an unrelated issue and he was getting 1000 mbps and max speeds flawlessly. If there's any info I can provide please let me know.

 

[boju]

Could be something inside the rj45 port?

For gigabit to work, all 8 wires must make contact. If one wire is off or in poor condition then link speed drops to 100 (4 wires used). 10mbps im not sure how many wires that uses but im guessing there's something wrong with the nic or port. Maybe network adapter card might work better.

 

[lantis3]

If you have Reaktek NIC, see if its utility helps

View: https://youtu.be/nAPEMCKWCRg

 

[Ralston18]

Is Speed and Duplex set to "Auto"?

 

[Fireflasher361]

Could be something inside the rj45 port?

For gigabit to work, all 8 wires must make contact. If one wire is off or in poor condition then link speed drops to 100 (4 wires used). 10mbps im not sure how many wires that uses but im guessing there's something wrong with the nic or port. Maybe network adapter card might work better.

As far as I can tell the cable is secure. I've re-secured it at least 100 times now across my testing and in various positions and the issue still persists. Though I am beginning to wonder if maybe there is something wrong with the port itself or the NIC. Is it possible to replace these components? Not really that familiar with this stuff.

If you have Reaktek NIC, see if its utility helps

View: https://youtu.be/nAPEMCKWCRg

I installed it and looked through it a bit and it does seem useful but Im unsure how Im supposed to use it to diagnose the issue.

Is Speed and Duplex set to "Auto"?

Yeah I went through all that already and it's always been set to Auto.

 

[lantis3]

I installed it and looked through it a bit and it does seem useful but Im unsure how Im supposed to use it to diagnose the issue.

There is a cable test.

 

[Ralston18]

This is going to require a deeper dive.

The objective being to determine what, if anything, changes when the speeds are limited.

My suggestion is to use Powershell and some basic cmdlets to learn more about how the host system is configured.

Start here:

https://www.techtarget.com/searchnetworking/tip/PowerShell-commands-for-network-troubleshooting

https://www.powershellengineer.com/p/21-one-line-powershell-networking

It may seem complicated but mostly it is straight forward and if you use Get's and Test's much more can be learned.

Especially if you are able to run Get's and Tests when the speed drops or otherwise changes: for better or worse.

Type Powershell into the Search Oval and Open. Just to provide some initial protection just run as a "user" versus Admin. Again Get's and Test's do not make changes - they just "get" information or run a test.

You can easily find other similar links but some may try to trick you into downloading something. Do not download anything. Just read and work with a few of the basic cmdlets.

Results of any cmdlets can easily be copied and pasted into a post.

You do not need to mask private IP addresses nor macs.

You should mask your name (if shown somewhere and public IP address.

https://www.lifewire.com/what-is-a-private-ip-address-2625970

Take your time read (and type) carefully.

 

[boju]

Is it possible to replace these components? Not really that familiar with this stuff.

If you have one of those small pcie 1x slot available and case has an opening for it, can get a network adapter card if all else fails. They don't cost much.