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Home > VMware > VMware: Edit MTU settings by GUI in vSphere 5.0

VMware: Edit MTU settings by GUI in vSphere 5.0

I saw it’s possible since vSphere 5 to configure the MTU size via the VI Client, sometimes it would be handy to do this with a GUI. In vSphere 4 you configure this at the console (vicfg-vswitch –m 9000 vswitch0 & esxcfg-vmknic –l )

vSwitch MTU Advanced Properties:

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VMkernel MTU NIC settings:

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sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

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  1. Johan
    July 17th, 2011  (Quote) at 12:57  (Quote) | #1

    Damn, thats easy

  2. Tom Henry
    July 21st, 2011  (Quote) at 11:08  (Quote) | #2

    Oke new feature, that’s very easy

  3. galkaiv
    July 25th, 2011  (Quote) at 08:35  (Quote) | #3

    Thank you for showing this simple configuration

  4. Kevin G.
    July 25th, 2011  (Quote) at 20:42  (Quote) | #4

    Cool feature Sander, didn’t expect this

  5. polinnkaa
    July 25th, 2011  (Quote) at 23:11  (Quote) | #5

    Thanks

  6. Jeff
    August 8th, 2011  (Quote) at 10:49  (Quote) | #6

    Hmpff, everyone can configure vSphere now

  7. Evan
    August 10th, 2011  (Quote) at 10:56  (Quote) | #7

    I never changed the MTU size 🙂 anyone?

  8. September 16th, 2011  (Quote) at 08:16  (Quote) | #8

    Evan :

    I never changed the MTU size :) anyone?

    Sometimes..

  9. Davo
    October 18th, 2011  (Quote) at 18:30  (Quote) | #9

    @Evan
    Typically you change it for iSCSI NIC’s, MTU = 9000

  10. Bastiaan
    November 23rd, 2011  (Quote) at 15:44  (Quote) | #10

    Is this also posible with hardware iscsi cards? I’m unable to find this in the gui. Anyone?

  11. sebus
    February 23rd, 2012  (Quote) at 15:44  (Quote) | #11

    HBA have the settings in its own BIOS, NOT in ESXi GUI!

  12. Xeiran
    April 10th, 2012  (Quote) at 18:28  (Quote) | #12

    Any MTU over 1500 is a “jumbo frame”, and your network switch as well as your SAN must be programmed to use the same MTU size, otherwise it’s pointless to change this in VMWare. Beware, some older switches don’t support jumbo frames.

  13. April 10th, 2012  (Quote) at 20:45  (Quote) | #13

    Xeiran :

    Any MTU over 1500 is a “jumbo frame”, and your network switch as well as your SAN must be programmed to use the same MTU size, otherwise it’s pointless to change this in VMWare. Beware, some older switches don’t support jumbo frames.

    Correct, you need to configure SAN, Storage switches and vSwitches + Virtual Machine.. tip update the vSwitch frist

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