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kingmustard

11 MB/s transfer cap between PCs on my network

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Posted · Original PosterOP

Until recently, my ISP was BT, which came with a BT Smart Hub router.

 

I now have Virgin Media, and the router this time is a Virgin Media Super Hub 3.0.

 

eb_11mbslow-1.png.b0137456f2d4b4514308f27c35143617.png

 

The cable between the router and the switch (D-Link GO-SW-5G, which worked a treat on the BT setup) is different from the BT setup - it's this cable.

 

Whilst using the BT equipment, I used to get fast transfers between PC1 and PC2 (I can't remember what it was, but I think it was around 70 MB/s?) but now I'm only getting 11 MB/s transfer rates, which I believe is a 100 Mbit/s connection.

 

This page mentions Cat 6 shielded cable is needed, which is annoying. Are they right?


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1 minute ago, kingmustard said:

Until recently, my ISP was BT, which came with a BT Smart Hub router.

 

I now have Virgin Media, and the router this time is a Virgin Media Super Hub 3.0.

 

eb_11mbslow-1.png.b0137456f2d4b4514308f27c35143617.png

 

Whilst using the BT equipment, I used to get fast transfers between PC1 and PC2 (I can't remember what it was, but I think it was around 70 MB/s?) but now I'm only getting 11 MB/s transfer rates, which I believe is a 100 Mbit/s connection.

 

This page mentions Cat 6 shielded cable is needed, which is annoying. Are they right?

Cat5e can do 1Gb/s no issues. 

Check the ethernet properties on both devices and make sure they are both running at 1,000Mb/s (or 1Gb/s, whatever windows supports). If they do I would guess it's the switch. If you can, you could try connecting both pcs directly via cat5e, manually assigning both of them ips (192.168.0.2 & 192.168.0.3 for example) and transferring that way to see if the limit stays there. It shouldn't as long as both devices support Gigabit networking and the cable is in good condition. 


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Posted · Original PosterOP
10 minutes ago, Brink2Three said:

Cat5e can do 1Gb/s no issues. 

Check the ethernet properties on both devices and make sure they are both running at 1,000Mb/s (or 1Gb/s, whatever windows supports). If they do I would guess it's the switch. If you can, you could try connecting both pcs directly via cat5e, manually assigning both of them ips (192.168.0.2 & 192.168.0.3 for example) and transferring that way to see if the limit stays there. It shouldn't as long as both devices support Gigabit networking and the cable is in good condition. 

PC1 (Intel Ethernet Connection I219-V) shows a 100 Mbps link and PC2 (Intel 82579LM Gigabit Ethernet Controller) shows 1.0 Gbps.

 

No settings have changed on either PC, so it's a bit confusing.


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16 minutes ago, kingmustard said:

Until recently, my ISP was BT, which came with a BT Smart Hub router.

 

I now have Virgin Media, and the router this time is a Virgin Media Super Hub 3.0.

 

eb_11mbslow-1.png.b0137456f2d4b4514308f27c35143617.png

 

The cable between the router and the switch (D-Link GO-SW-5G, which worked a treat on the BT setup) is different from the BT setup - it's this cable.

 

Whilst using the BT equipment, I used to get fast transfers between PC1 and PC2 (I can't remember what it was, but I think it was around 70 MB/s?) but now I'm only getting 11 MB/s transfer rates, which I believe is a 100 Mbit/s connection.

 

This page mentions Cat 6 shielded cable is needed, which is annoying. Are they right?

Sounds like a firmware issue on the Switch. EEE enable has been known to cause ethernet to drop down to 100Mbit/s and not switch back to gigbit when needed. Is the switch managed? If so see if there an option in the GUI to disable EEE or any engery saving features. 

 

If not managed or no option exists force your NIC cards to run at gigbit in properties there should be a option for EEE or you can set Speed and Duplex Manually.


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Posted · Original PosterOP
4 minutes ago, ddennis002 said:

Sounds like a firmware issue on the Switch. EEE enable has been known to cause eithernet to drop down to 100Mbit/s and not switch back to gigbit when needed. Is the switch managed? If so see if there an option in the GUI to disable EEE or any engery saving features. 

 

If not managed or no option exists force your NIC cards to run at gigbit in properties there should be a option for EEE or you can set Speed and Duplex Manually.

The switch is unchanged from last week, when BT was my ISP :(

All that has changed is the router and the cable between the router and the D-Link GO-SW-5G switch.

 

I just tried changing the cable between PC1 and the switch and PC1 is still showing 100 Mbps.


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2 minutes ago, kingmustard said:

The switch is unchanged from last week, when BT was my ISP :(

All that has changed is the router and the cable between the router and the D-Link GO-SW-5G switch.

Could just be a fluke and not related.

Or it could be the router supports EEE and the switch enabled it by default on all ports.

Some devices cannot run EEE unless all devices connected can support EEE.

 

EEE.jpg

speed.jpg


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13 minutes ago, kingmustard said:

PC1 (Intel Ethernet Connection I219-V) shows a 100 Mbps link and PC2 (Intel 82579LM Gigabit Ethernet Controller) shows 1.0 Gbps.

 

No settings have changed on either PC, so it's a bit confusing.

Try swapping the cables between the two. if the first pc stays at 100Mbps then I would guess it's the adapter. 


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Posted · Original PosterOP
40 minutes ago, ddennis002 said:

Could just be a fluke and not related.

Or it could be the router supports EEE and the switch enabled it by default on all ports.

Some devices cannot run EEE unless all devices connected can support EEE.

 

<screenshot snipped>

<screenshot snipped>

I turned Energy Efficient Ethernet from On to Off but there was no change (connection worked but still at 100 Mbps).

If I force Speed & Duplex from Auto Negotiation to 1.0 Gbps Full Duplex, the NIC disconnects until I put it back to Auto Negotiate.

32 minutes ago, Brink2Three said:

Try swapping the cables between the two. if the first pc stays at 100Mbps then I would guess it's the adapter. 

PC2 is running at 1.0 Gbps, so I haven't messed with that cable.

I've tried changing the cable between PC1 and the switch, with no change.


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2 minutes ago, kingmustard said:

I turned Energy Efficient Ethernet from On to Off but there was no change (connection worked but still at 100 Mbps).

If I force Speed & Duplex from Auto Negotiation to 1.0 Gbps Full Duplex, the NIC disconnects until I put it back to Auto Negotiate.

PC2 is running at 1.0 Gbps, so I haven't messed with that cable.

I've tried changing the cable between PC1 and the switch, with no change.

What is the model of the NIC that your having issues with?


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Posted · Original PosterOP
3 minutes ago, ddennis002 said:

What is the model of the NIC that your having issues with?

PC1 has a Intel Ethernet Connection I219-V.

 

PC2 has a Intel 82579LM Gigabit Ethernet Controller.


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15 minutes ago, kingmustard said:

PC1 has a Intel Ethernet Connection I219-V.

 

PC2 has a Intel 82579LM Gigabit Ethernet Controller.

Is PC1 overclocked?

What motherboard is it?


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Posted · Original PosterOP
Just now, ddennis002 said:

Is PC1 overclocked?

It's not.

I've tried connecting PC1 directly to PC2 and both NICs show 1.0 Gbps.

So does that mean an issue with the switch? (which was working perfectly until very recently)


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Just now, kingmustard said:

It's not.

I've tried connecting PC1 directly to PC2 and both NICs show 1.0 Gbps.

So does that mean an issue with the switch? (which was working perfectly until very recently)

Have you tried a different port on the switch? 

It could be a configuration issue in windows, try uninstalling the NIC from device manager and reinstall the drivers from Intel's website. This should clear any weird configuration with the NIC.


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Posted · Original PosterOP

Tried a THIRD Ethernet cable between PC1 and the switch and PC1 now shows 1.0 Gbps!

 

Goodness bloody me! 😂

 

Thank you all for your help!


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3 minutes ago, kingmustard said:

It's not.

I've tried connecting PC1 directly to PC2 and both NICs show 1.0 Gbps.

So does that mean an issue with the switch? (which was working perfectly until very recently)

I am willing to bet its a driver issue, that nic seems to have this issue is common going by the quick google search.

 

 

https://rog.asus.com/forum/showthread.php?101724-Intel-I219-V-Lan-Speed-limited-to-100mb-s

https://forums.intel.com/s/question/0D50P0000490S6CSAU/intel-1219v-wont-connect-at-more-than-100mbps?language=en_US

 


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4 minutes ago, kingmustard said:

Tried a THIRD Ethernet cable between PC1 and the switch and PC1 now shows 1.0 Gbps!

 

Goodness bloody me! 😂

 

Thank you all for your help!

Good Deal!


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https://www.passmark.com/baselines/V9/display.php?id=119446601351

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