Question Network speed changes on wired connections.

[1WayStreet]

Hello,
I recently had some work done in my home to wire most of my devices to a switch in the basement. The switch is connected to a 2 network port plate installed on my main floor. One port connects to the router, which is wired to the fiber modem.
The second port is connected to an apple TV.
When I connect to the Apple TV, I am seeing two green lights on the switch indicating a GB connection.
When I connect a different device (this case a Xbox), only one green light is on and the speed is throttled. This is an XBOX one which supports 1GB connections. Ethernet cables were switched out and I got the same result.
What could be causing one device to get a GB speed, but another only half of that? How can I fix this? Thanks for all your advice.

 

[lantis3]

Check Xbox ethernet port see if there are some bent pins

 

[bill001g]

Is it half or is it 100mbps. A gigabit switch will run only 1000 or 100 or maybe 10mbps.

What do the lights mean if you look them up in the manual.

If we assume it is running at 100mbps then it is some kind of cable issue. Hard to say exactly without very expensive meters to certify cable.
Some device are much more sensitive to a cable slightly out of spec than other devices.

What I would do, assuming you have standard wire colors, is remove the blue and brown pairs 1 wire at time and then punch them back down. You might get lucky and see one of the connectors does not look correct. The orange and green pairs are likely correct because it would not work at all if those were bad

 

[1WayStreet]

There is no visible damage to the Xbox ethernet port.
My switch is capable of 1GB speeds which I am getting on other devices. For example my computer averages about 980Mbps with a wired connection.
The two activity port lights on the switch are active when I plug in an apple TV or another laptop, however when I plug in the Xbox I only get one activity light that lights up. Xbox network testing is showing only about 90Mbps. When I set up wireless on the Xbox, I only got about 25Mbps. I am not sure why this is happening.

Another weird thing is, the same thing happened to my computer that I spoke about above, but was 'fixed' after rebooting the modem, the switch, the PC pretty much everything. I did all the necessary reboots for the Xbox and nothing has changed. All devices are up to date with the latest updates.

 

[Ralston18]

The wiring being something like the following line diagram (where ---> is an Ethernet cable).

Fiber Modem ----> [WAN port] Router

Router [LAN port] ---> to Main floor, 1st outlet network port ---> to basement Switch [LAN Port]

Switch ---> [LAN port] to Main floor, 2nd outlet network port ---> Apple TV/ Laptop/Xbox ( as swapped in)
---> [LAN ports] to other wired devices


Correct? Feel free to edit and correct as necessary.

 

[bill001g]

Just over 90mbps is what you see on a 100mbps port once you remove some of the overhead. It is likely there is a issue with one of you wall jack/plates.

 

[1WayStreet]

I do think the issue might have to do with the wall jack/plates. However the same ports are giving me different results.
Ralston18, you got the diagram correct.

Fiber Modem ----> [WAN port] Router (EERO puck)

Router (EERO puck) {LAN port] ---> to Main floor, 1st outlet network port ---> to basement Switch [LAN Port]

Switch ---> [LAN port] to Main floor, 2nd outlet network port ---> Apple TV/ Laptop/Xbox ( as swapped in)
---> [LAN ports] to other wired devices

 

[Ralston18]

Do the Modem, Router, Switch, Xbox etc. share the same electrical circuit?

Or perhaps some subset of those devices?

 

[1WayStreet]

Do the Modem, Router, Switch, Xbox etc. share the same electrical circuit?

Or perhaps some subset of those devices?

Yes I believe they do. The modem, router and xbox/apple tv share the same circuit. Not sure about the switch since it is plugged in my basement, but it is in the same general area of the other cluster of devices.

 

[Ralston18]

"I recently had some work done in my home to wire most of my devices to a switch in the basement."

Basically thinking outside of the box from which I am known to fall out of.....

If you take a look at all of the devices involved and how they are connected:

E.g., Device A connected to Device B connected to Device C connected to Device D (etc....) that is again somehow connected to Device A (the starting point) - that is a loop.

Sketch out a diagram that includes all existing connection paths between devices.

Any loops anywhere?

No vested interest per se.

Intent being to just discover or eliminate a potential culprit: ground loop or network loop.....

And go from there.

 

[bill001g]

It would be nice if ethernet cables would work of completely fail rather than work sometimes.

It is not unusual for a marginal ethernet cable to work on some devices and not others. Some can tolerate a cable that is out of spec more than other devices. The only way to really test cables for problems like this is with a meter that is way out of the price range for home users. You are more often stuck just blindly reterminating the ends and hope to get lucky.