VMware vSphere

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  • 1.  About vmxnet3

    Posted Jul 17, 2018 02:23 PM

    Hi buddies,

    The upper limit of vmxnet3 is 10GB in practice? if vmware can support higher performance?

    Thanks in advance.



  • 2.  RE: About vmxnet3

    Posted Jul 17, 2018 05:39 PM

    Virtual NICs are just passthru. Depends on the bandwidth of your physical uplinks. Assuming you have a practical bandwidth of 1 Gbps, question is whether your storage is able to support such high network load.

    Cheers,

    Supreet



  • 3.  RE: About vmxnet3

    Posted Jul 25, 2018 02:07 PM

    Hi SupreetK,

    I add network controll type vmxnet3 when setting up guest OS . When login the guest OS, please check the screenshot, its speed is 10000Mb/s (10Gb/s).

    Just want to confirm even if my physical NIC on the esci box is 40Gb/s, the speed of the vmxnet3 show below is still 10Gb/s, while its actual speed will be much higher than 10Gb/s (close to 40Gb/s)?

    Appreicate your advice.



  • 4.  RE: About vmxnet3
    Best Answer

    Posted Jul 25, 2018 03:24 PM

    VM will show the bandwidth as 10 GBps. However, the actual bandwidth will depend on your uplink speed. A physical CentOS or a Windows installation might show it as 40 GBps but, not the VMs. You will have to perform a bandwidth test to see how much you are getting in actual.

    Please consider marking this answer as "correct" or "helpful" if you think your questions have been answered.

    Cheers,

    Supreet



  • 5.  RE: About vmxnet3

    Posted Jul 25, 2018 07:23 PM

    Hello,

    kindly find the following: https://blogs.vmware.com/performance/2015/04/network-improvements-vsphere-6-boost-performance-40g-nics.html

    Network Improvements in vSphere 6 Boost Performance for 40G NICs - VMware VROOM! Blog - VMware Blogs

    Please consider marking this answer "CORRECT" or "Helpful" if you think your question have been answered correctly.

    Cheers,

    VCIX6-NV|VCP-NV|VCP-DC|

    @KakHassan

    linkedin.com/in/hassanalkak