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AvatarKorra's profile

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3 Messages

Saturday, November 26th, 2022 1:44 AM

Changed Ethernet Port Configuration to Allow 1000mbs Throughput, and Mostly Worked, but Error Seems to Exist Somewhere Between Port and PC

Hello everyone, there is a bit of set up here for my question so please bear with me, it's an interesting conundrum but I did my best to narrow it down.

The issue:
I noticed that I was getting 700+mbs speeds on my devices over wireless internet but over ethernet it was substantially slower, around roughly 200mbs on my PlayStation, and capped at 100mbs on my laptop, which uses a usb c ethernet dongle capable of 1000mbs if the bandwidth is there for it. I wanted to get more speed out of my connection, so I decided to get after it.

What I did:
First, I ran a speed diagnostic from the router's internal admin page, and it was getting right near the full 1000mbps, groovy. Then I went ahead to router settings > home network > configuration and switched all four of the router's ethernet ports to allow 1g full duplex. This worked! mostly! On my PlayStation I'm now seeing around 680mbs down, which is awesome, but my laptop stopped seeing that there was ethernet available at all, whoops.

How I troubleshot:
- First, I updated the ethernet driver on my laptop just in case, that didn't do the trick.
- Next, I started to wonder if maybe the ethernet port the laptop was going through was having trouble with the new 1g full duplex setting. I took my laptop over to the router and plugged it in to a free port instead (port 3) and it worked! The windows 11 network & internet settings tab showed it could tell it was on a 1000mbs network, great!
- Seeing that success, I took my laptop back to the wall port where it's usually plugged in, and then swapped the ethernet cable for that wall spot (usually sitting in port 2) over to port 3. Since I just tested port 3 with my laptop, dongle, and ethernet cable directly, I figured this would be a victory; however, it failed to work. My laptop couldn't see the internet at all.
- Because that didn't work, I swapped the wall cable from port 3 back to port 2, then with my laptop in its usual spot connected to the wall, used wifi to try dropping through each of the configuration settings for port 2 in the router, then reconnect via ethernet to see if maybe that would produce a result:
-- Auto = Works, but only 100mbps
-- 1g Full Duplex = no ethernet
-- 1g Half Duplex = no ethernet
-- 100mbs Full Duplex = works, unsurprisingly only 100mbs

My Question:
Given that I was able to successfully connect to 1000mbps ethernet when plugged directly into the back of the router in a free port, swapping the in-wall Ethernet to that same port didn't produce useable ethernet, and the in-wall ethernet remained unusable unless the port it was plugged into  was set to either auto or 100mbps configuration, I think there is something screwy with the connection along the path after the ethernet leaves the ports on the router but before I plug in to the wall with a patch cable to complete the link. What do y'all think is going on here, and is it something I'll be able to remedy myself if I follow your instructions?

If you got to the end of this to consider my question, I appreciate you, thank you!

edit: fixed a typo

browndk26

ACE - Professor

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4.9K Messages

2 months ago

Sounds like a problem with the in wall Ethernet cable or the port in the wall. Try connecting another Ethernet device to the wall outlet. What connection speeds does a different device get?

Also text again with the ports in auto configuration. 

ATTHelp

Community Support

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207.2K Messages

2 months ago

We'd be glad to assist you with your Ethernet issue, AvatarKorra.

 

Let us know if you tried browndk26's suggestions and provide the additional information they requested, so we can determine what your next steps should be.

 

Aminah, AT&T Community Specialist

New Member

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3 Messages

2 months ago

Thanks Browndk26 and Aminah,

The only other ethernet capable device I've got around to test the wall port with right now would be the PlayStation in the living room. I considered undoing all the cable management behind the media console there and bringing it and the TV over to test, but... that's a lot lol. Instead I'll borrow a friend's laptop today or tomorrow and let you know what I see!

browndk26

ACE - Professor

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4.9K Messages

2 months ago

Might be worthwhile to get a cheap tester and test the wall outlet to see if it’s passing full Ethernet. Last resort after testing with another device is a factory reset of the gateway. 

New Member

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3 Messages

2 months ago

Thanks for the suggestion and I'll pick one up. I'd like having one on hand, at least as a novice with the right tools I can get a little farther than one without, I'm sure use it in the future/be able to help out friends a little with it too.

markbnj

New Member

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75 Messages

2 months ago

gotta tell you, I found this on amazon, and was amazed at what it could do, for the price.

as a quick aside, the cat 6 certifier I had, cost about $500 when I got it about 5-6 yrs ago...

Here;s a link:

PS: I make nothing off this link!

https://www.amazon.com/dp/B08CMRCDNB/?coliid=I35DQIQHUT0MNY&colid=1CSA97GJSH4M8&psc=1&ref_=lv_ov_lig_dp_it

(edited)

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