VMware Cloud Community
Hunter22
Contributor
Contributor

How to set the MTU size for a physical function on a Intel X520

Hello,

I have ESX 5.1 configured for SR-IOV on a Intel X520 and would like to configure the MTU setting to 9000 to match the virtual functions MTU value of 9000.

When the device is a vSwitch, setting this seems simple enough either using the GUI or CLI.

Configured for SR-IOV and a passThru device, I am unable to find the command to configure this value.

Thanks for the guidance,

Hunter22

~ # esxcli network sriovnic list

Name    PCI Device     Driver  Link  Speed  Duplex  MAC Address         MTU  Description

------  -------------  ------  ----  -----  ------  -----------------  ----  ------------------------------------------------------------

vmnic0  0000:005:00.0  ixgbe   Up    10000  Full    a0:36:9f:XX:XX:XX  1500  Intel Corporation 82599EB 10-Gigabit SFP+ Network Connection

vmnic1  0000:005:00.1  ixgbe   Up    10000  Full    a0:36:9f:XX:XX:XX  1500  Intel Corporation 82599EB 10-Gigabit SFP+ Network Connection

~ # esxcli system module get -m ixgbe

   Module: ixgbe

   Module File: /usr/lib/vmware/vmkmod/ixgbe

   License: GPL

   Version: Version 3.14.3iov, Build: 472560, Interface: 9.2 Built on: Mar  7 2013

   Signed Status: Unsigned

   Signature Issuer:

   Signature Digest: ca65 a87f b851 7766 1931 a134 10a2 69e1 28d9 ebae 26c3 2eba 32aa 2c91 172b dada

   Signature FingerPrint: 0000 0000 0000 0000 0000 0000 0000 0000

   Provided Namespaces:

   Required Namespaces: com.vmware.driverAPI@9.2.0.0, com.vmware.vmkapi@v2_0_0_0

0 Kudos
1 Reply
nirmalanand
Enthusiast
Enthusiast

By any chance you found out the way to set it on the PF side?

I seem to have the same problem and there is no info on this is at all anywhere

Regards,

Nirmal

0 Kudos