Ethernet speeds through Deco x20

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Ethernet speeds through Deco x20

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Ethernet speeds through Deco x20
Ethernet speeds through Deco x20
2023-01-09 14:53:36
Model: Deco X20  
Hardware Version:
Firmware Version:

Hi All,

 

Hoping that someone can shed some light on this for me. I had Virgin Media installed in October and am currently on their gigabit service.

 

Initially when I set everything up, I had the Virgin Hub 4 connected via a wired ethernet connection to a gigabit switch that enabled me to get around 950Mbps to my desktop PC upstairs in my office. The actual full speed of the connection using the SamKnows speed checker was 1150Mbps, I presume the difference is due to the speed limitations of gigabit protocol and cables/hardware.

 

I had also plugged in 2 Deco x20 units to switches at various points around the house, which functioned perfectly well, however I was effectively running two networks with different SSID’s (one wired, one wireless via the Deco’s) which meant that whilst they were able to share an internet connection, I wasn’t able to utilise a wired media server I have connected via ethernet elsewhere in the house with my wireless Sonos system.

 

Having dug around here and on the Virgin Media forum, I finally took the plunge over the weekend to rearrange some of the network devices. I now have the Virgin Hub 4 running in modem mode which is connected via ethernet to my main Deco x20 unit. The Deco is also connected to a switch that then connects to the ethernet socket on the wall of my living room, which then gives me wired ethernet elsewhere in the house via a switch in the utility room.

 

This means that I now have devices connecting either via ethernet or Wi-Fi to a network with the same SSID and all devices can talk to one another, so I can access my music library via Sonos again or print from anywhere in the house – wonderful!

 

Unfortunately, the only drawback that I seem to have noticed so far is that the internet speed to my desktop PC via ethernet has dropped significantly, from 950Mbps under the previous setup to around 500Mbps currently (using an Ookla speed test).

 

Whilst this is still fast by most peoples standards, it is around half the speed that I am paying for and it is probably the only device in the house (other than my PlayStation 5) that would really benefit from the full speed of the internet connection for large downloads. I have been able to unplug the Deco x20 from the Hub and then plug in a laptop connected via ethernet to do an Ookla speed test which consistently gives me 950Mbps, so something is going awry elsewhere.

 

The network has two Deco x20 units connected (by ethernet) along with a Deco M3W plugged into the wall sockets of the main bedroom to offset a Wi-Fi blackspot there. I have read about Wi-Fi speeds halving when additional Deco units are added (this explains why I typically get around 150Mbps when connected via Wi-Fi 6 on my iPhone to the secondary Deco x20 in my office compared to nearly 650Mbps to the ‘main’ unit downstairs), but is this similarly applied for wired ethernet traffic also? The Deco units are running in Router mode and I have made the adjustments within the Deco app to the QoS settings so that the bandwidth is 1000mb down and 100mb up. 

 

Any information that anyone has to either explain this drop in speed or any suggestions of tweaks I can try to see if we can get back to full speed would be appreciated.

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Re:Ethernet speeds through Deco x20
2023-01-09 16:25:10

  @orangepants 

 

Satellite Deco that is wired to the home network should deliver same speeds as Main Deco, if everything is right. If you are not getting anything near Main Deco speeds when your mobile device is connected to Satellite X20, it is possible your Satellite X20 can't use Ethernet link and switches to WiFi, even when wired. Please check in Deco app, you should be able to see that on this screen:

 

 

If your Satellite X20 is not using Ethernet link, check this document for possible solutions: General questions about Ethernet Backhaul feature on your Deco

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Re:Ethernet speeds through Deco x20
2023-01-10 09:42:05

  @Alexandre. Thank you - I double-checked everything via the app and for some reason the satellite Deco was using Wi-Fi. Have disconnected and reconnected everything into the switch and now it seems to be working correctly, as it is displaying an ethernet connection in the app and I am now getting the same speed on my iPhone as when I am connected to the main Deco downstairs.

 

Do you have any thoughts on the other issue regarding not getting the full speed over ethernet to my desktop PC? I am still getting about 540 Mbps when connected to the Deco rather than the 950Mbps when connected directly to the modem.

 

Thanks again

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Re:Ethernet speeds through Deco x20
2023-01-10 12:38:31 - last edited 2023-01-10 12:39:28

  @orangepants 

 

I suspect slow PC speed issue may have something to do with Deco mesh configuration settings, but I can't be sure. To prove or eliminate this theory, I would like you to run the following test:

 

1. Configure Virgin Hub back from modem to its original router mode.

2. Configure Deco mesh to run in Access Point mode: How to set up Deco to work in Access Point mode

 

In Access Point mode, all traffic management settings are disabled in Deco and it delivers fastest speeds it can. It simply passes through WiFi and Ethernet traffic from devices connected to Deco nodes.

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