Network speed on a linux VM

Question

we have Linux VMs that have network interface infor Standard_L8s_v3 that normally haveMax network bandwidth 12500 MB/s

But when checking on Linux VMs I see only 100MB/S

nmcli -f CAPABILITIES.SPEED dev show eth0

CAPABILITIES.SPEED: 100000 Mb/s

ethtool eth0 | grep Speed

Speed: 100000Mb/s
```#

Please any explanation why ?

what is the component that are involved on network speed please ?

can the bandwidth be changed ? 

If yes how ?

Thanks for your help 

Answer 1

Hi @Mostafa ,

ethtool eth0 | grep Speed

Speed: 100000 Mbit/s = 100 Gbit/s

You asked:

So please, is it 100Mb/s or 100Gb/s? 100 Mbit/s = 0.1 Gbit/s

Based on ethtool-Speed output it is 100000 Mbit/s or 100 Gbit/s.

VM SKU Standard_L8s_v3: Max network bandwidth 12500 MB/s

12500 MByte/s = 100000 Mbit/s = 100 Gbit/s

This looks good for me.

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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards

Andreas Baumgarten

Answer 2

Hi @Mostafa ,

could you please check if the accelerated networking is enabled on your Azure VM: Confirm that accelerated networking is enabled

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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards

Andreas Baumgarten