1.    18 Oct 2016 #1

    LAN - 1 Gb/s on VM, 100 Mb/s on W10 HOST (HYPER -V)


    HI there

    particularly @Kari as you are the resident expert on HYPER-V here !!!!

    HYPER -V have 2 physical identical INTEL NIC 1Gb/s Wired Lan connectors -- VM gives me 1Gb/s, Windows Host only 100 Mb/s ???

    Have switched NIC's and cables --same result.

    Since I'm using the VM more I'm happy it's THIS way around (VM networking faster !!) rather than the other - would have thought HOST should have better LAN performance on wired LAN !!! but am confused as to why.

    Have I hosed up the HYPER-V switch ??

    Host --Windows 10 x-64 PRO

    VM's 1) CENTOS 7
    2) UBUNTU 14

    Note these VM's I ran individually same Network connection speed reported via LAN.

    VM

    Click image for larger version. 

Name:	Lan1.png 
Views:	2 
Size:	723.9 KB 
ID:	106577

    W10 Host

    Click image for larger version. 

Name:	Lan2.png 
Views:	21 
Size:	12.7 KB 
ID:	106578

    I know it's OK as the hardware LED's on the Nic's indicates GREEN when LAN is 1Gb/s and Yellow for 100 Mb/s

    Any ideas ???

    Cheers

    jimbo
      My System SpecsSystem Spec


  2. Joined : Oct 2013
    A Finnish ex-pat in Germany
    Posts : 9,079
    Windows 10 Pro
       18 Oct 2016 #2

    Hyper-V virtual NICs emulate gigabit NICs. Of course, as this is only emulation, the real max speed for external traffic is then the max speed of the host physical NIC.
      My System SpecsSystem Spec

  3.    19 Oct 2016 #3

    Kari said: View Post
    Hyper-V virtual NICs emulate gigabit NICs. Of course, as this is only emulation, the real max speed for external traffic is then the max speed of the host physical NIC.
    Hi there

    Both physical NICs are 1 Gb/s - Yellow led indicates 100 Mb/s, Green Led indicates 1 Gb/s
    Am using separate Nics on VM and HOST.

    Linux driver using physical Driver for the Nic (Nic 1). Windows using physical driver for Nic 2.

    Intel normally has the most reliable and installable Nic drivers !!!!!. Wifi is another issue but I'm not using that on this machine at all.

    Running Linux on HOST machine BOTH Leds are Green (indicating 1 Gb/s)

    Native Windows on Host without HYPER-V -- still indicates Yellow Led (100 Gb/s). I physically carried server to Router and attached small piece of LAN (0.5 metre) directly to Router. -- Router indicates 1 Gb/s while LED on Nic adapter was only 100 Mb/s so definitely something wrong with driver / hardware compatibility. I tried BOTH NIC's (2 physical NIC's on Host) - same result so it's not just 1 NIC being defective.

    I think it must be a HOST driver issue -- am looking further. !!

    Thanks for the info.

    Curious -- 99% of my problems on Windows seem to be with Networking in one area or another !!!!!.

    I tried restoring both a W7 image and XP image individually (to HOST machine) - Lan adapter Led immediately switched to GREEN at 1 Gb/s for BOTH OS'es so definitely W10 doesn't like my driver or there's some hidden / obscure settings I need to change.

    Cheers
    jimbo
      My System SpecsSystem Spec

  4.    19 Oct 2016 #4

    Hi there
    @Kari

    Found the problem !!!!

    I had some leftover stuff from VMWARE workstation release 12.5 (some virtual nic service which was still running at startup).

    Totally removed and now both NIC's at 1Gb/s (green Leds).

    Funny though because this didn't happen after I'd uninstalled previous release of Vmware workstation 12.1 to run HYPER-V.

    Obviously something with both VMware workstation and latest Windows updates -- still I'd have thought vmware should have a better uninstall.

    I'm happy with HYPER-V and networking works properly now on both HOST and HYPER-V.

    Cheers
    jimbo
      My System SpecsSystem Spec


  5. Joined : Oct 2013
    A Finnish ex-pat in Germany
    Posts : 9,079
    Windows 10 Pro
       19 Oct 2016 #5

    As an avid Hyper-V fan I am happy to notice you have found Hyper-V . I remember you having some reservations earlier.
      My System SpecsSystem Spec


 


Similar Threads
Thread Forum
stalled install of hyper-v on win 10 pro host
Hi, I hope someone may be able to point me in the right direction. I am installing win 10 pro on my machine, which goes fine, then when i try to install hyper-v (add program and features) it seems to go well, reboots, tells me installing...
Virtualization
KVM Host --W10 VM with HYPER -V running another VM (Nesting)
Hi there. It seems some CPU's will handle HYPER-V in a VM running on a Host where a HYPERVISOR (KVM in this case) is already running. One needs to make a few mods otherwise booting up the VM running UNDER the HYPER-V (the 2nd level VM) will...
Virtualization
Hyper V not Showing Host Machine
Hyper V Manager Not showing Host Machine so i can make virtual machine screen shoot is below 81869
Virtualization
HYPER-V won't install properly on W10 HOST
Hi there I can't install HYPER-V properly on a W10 HOST -- gets message about something in BIOS not enabled. Installs fine on W8.1 . On W10 the boxes are greyed out. Cheers jimbo
Virtualization
HYPER-V won't install properly on W10 HOST
Network and Sharing
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 15:13.
Find Us
Twitter Facebook Google+



Windows 10 Forums