This topic

Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

efelstead — Fri, 27 Oct 2023 13:55:52 GMT

Hi all

I posted recently about an issue I am having with my Email after update to Digital Voice/BT Smarthub 2

The problem was that I could not receive Emails before the connection was timed

I have now identified a problem which I think is causing the problem

Basically with the Ethernet connection my UPLOAD SPEED has dropped to below 1mbs !!

Whereas disconnecting Ethernet and using WiFi the UPLOAD SPEED is normal at around 15-20 mbs

I would welcome any suggestions as to where I might look for a resolution so I can return to using my Ethernet

Thank you

Regards

Edward

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Keith_Beddoe — Fri, 27 Oct 2023 14:01:41 GMT

Possibly a faulty network card.

When Ethernet is connected, does it affect the upload or download of other connected devices?

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

imjolly — Fri, 27 Oct 2023 14:01:59 GMT

try Factory reset of sh2 by pressing recessed button on back of hub and holding 20/30 secs until lights flash

have you tried a different ethernet cable

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Anonymous — Fri, 27 Oct 2023 14:28:07 GMT

"have you tried a different ethernet cable"

Also try a different port on the Hub.

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Anonymous — Fri, 27 Oct 2023 14:50:23 GMT

This is a perfect example of why you don't create multiple threads for the same issue. You just waste other members time making the same suggestions that you've already had on the original thread.

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

efelstead — Fri, 27 Oct 2023 17:20:45 GMT

I can assure you it is not my intention to waste your time or anybodies.

My original post concerned my inability to pick up emails immediately after BT changed my router for Digital Voice

I did not realise this was a symptom of a wider issue not just involving emails

Hence my recent post was an attempt to broaden the issue to try to understand why an ethernet connection would reduce my upload speed from 18-20mbs to less than 1mbs

Regards

Edward

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

efelstead — Sat, 28 Oct 2023 14:37:43 GMT

Thanks for your reply to my post

I have just replaced the Ethernet cable with a new one

Here are the results -

Download speed 71Mbs (As expected)

Upload Speed < 1Mbs (Expected 15 - 20Mbs)

Now tested with Ethernet cable disconnected ie WiFi

Download speed 38Mbs (Roughly half that expected)

Upload speed 18Mbs (As expected)

I cannot understand why these results are so dramatically different

Regards

Edward

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

licquorice — Sat, 28 Oct 2023 14:40:24 GMT

See message 2 and message 4

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Keith_Beddoe — Sat, 28 Oct 2023 14:44:26 GMT

An issue with the network card on your laptop, probably auto-negotiating the wrong speed.

https://en.wikipedia.org/wiki/Duplex_mismatch

Do you by any chance have a spare Ethernet switch that you can interpose between the home hub Ethernet port, and your laptop Ethernet port?

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

efelstead — Sat, 28 Oct 2023 14:53:37 GMT

Hi Keith

Thanks for your post

Yes I do have a switch I can install between the SmartHub 2 and the Laptop

Could you expand for me and give me details as to what i am looking for please?

Regards

Edward

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Keith_Beddoe — Sat, 28 Oct 2023 15:01:05 GMT

Mismatches can occur between different Ethernet devices due to timing errors, especially with cheap consumer stuff like the home hub.

An Ethernet switch has the ability to correct any timing differences as it has a small internal buffer and a flow control mechanism to match different speeds.

Try adding the switch, just a single port connected to a single port on the home hub, and another port connected to the laptop Ethernet port.

See if it sorts out the upload speed.

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

efelstead — Sat, 28 Oct 2023 15:18:07 GMT

Thanks a lot Keith

I understand your thinking

I have a NETGEAR 5Port Gigabit Ethernet Switch

On the box it states - Auto-negotiation for automatic connection at the highest common speed between switch and an end device!!

I guess this is what you think could possibly help with my issue

I will get on with it and let you the result

Fingers crossed

Regards

Edward

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

efelstead — Sat, 28 Oct 2023 17:56:05 GMT

Hi Keith

Disappointing result I'm afraid

Exactly the same thing happened

With Ethernet through Netgear Switch - Download 70Mbs;Upload < 1Mbs

With Ethernet disconnected and via WiFi - Download 30Mbs ;Upload 18Mbs

The cable linking the switch to Laptop is brand new

The Netgear Switch is nearly brand new

I am baffled Keith!!

Regards

Edward

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Keith_Beddoe — Sat, 28 Oct 2023 18:09:14 GMT

Faulty or misconfigured network port on the laptop. Uninstall the adapter and then let Windows re-install it.

Perhaps updated drivers needed, or a check of the hardware settings on the network interface to see if its set to auto-negotiate.

Re: Ethernet connection from BT Smarthub 2 to Laptop causing seriously low Upload speed

Anonymous — Sat, 28 Oct 2023 18:05:12 GMT

"The cable linking the switch to Laptop is brand new"

Even brand new cables, (like anything else), can still be faulty, of course.

My favourite is: "It can't be the (insert name of electronic item or cable), because it was working fine last time I used it" 🤣

*Not intended as a dig at @efelstead !