I couldn’t find how to do this via the web GUI (hate the new 5400 web console - what happened to the performance graphs??) – anyhow this is the commands to do it via commandline…
5406zl-A# show vlan 200 Status and Counters - VLAN Information - Ports - VLAN 200 VLAN ID : 200 Name : VLAN200 Status : Port-based Voice : No Jumbo : No
5406zl-A# configure 5406zl-A(config)# vlan 200 jumbo 5406zl-A(config)# end 5406zl-A# sho vlan 200
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