Jumbo Frames on your vSphere ESXi box
Continuing on from this /2010/02/04/vsphere-and-multipathing-iscsi/
you may want to implement jumbo frames to your iSCSI backend…
Enable jumbo frames on your iSCSI target and switches then complete the following on the ESXi hosts (iSCSI initiators)…
This to list your current switch details and port group names…
esxcfg-vswitch -l
The following to allow jumbo frames onto your vswtich (insert your vSwich in following)
esxcfg-vswtich -m 9000 vSwitch0
Then create your kernel port groups that you want to use for iscsi, my commands looked like this… (repeat for each iscsi kernel port you have) – note : DO NOT ADD ANY VMKERNEL(s) from the GUI, instead use the steps below