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Configure and Customize Dell PowerFlex v3.6.x

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Jumbo Frame configuration for ESXi

Configure Jumbo Frames for NIC cards in the ESXi-based PowerFlex servers.

About this task

Perform the following steps, for all the NIC cards in the PowerFlex system:

Steps

Change the Maximum Transmission Unit (mtu) setting to 9,000 on the vSwitches and on the SVM (be sure to make the change in /etc/sysconfig/network/ifcfg-ethX):
  1. Type the command:
    esxcfg-vswitch -m 9000 <vSwitch>
  2. Create VMKernel with jumbo frames support by typing the following commands:
    1. esxcfg-vswitch -d
    2. esxcfg-vswitch -A vmkernel# vSwitch#
    3. esxcfg-vmknic -a -i <ip address> -n <netmask> -m 9000 <portgroup name>
NOTE:Changing Jumbo Frames on a vSwitch will not change the VMKernel MTU size. For older vCenter versions, check to ensure the MTU setting has been changed. If not successful, users may need to delete and recreate the VMKernel. For newer vCenter versions, modify the MTU of VMKernel by using the vsphere web client.

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