Tuesday, May 18, 2010

Jumbo Frames

Jumbo Frames

Any packet larger that 1500 MTU is a Jumbo Frame. ESX 3.5 and beyond supports frames up to 9,000 Bytes. No Jumbo Frames support for NAS or iSCSI traffic.

Configure a vSwitch for Jumbo Frames with the following command:
esxcfg-vswitch -m [MTU] [vSwitch_name]

Configure a VMkernel interface for Jumbo Frames with the following command:
esxcfg-vmknic -a -i [ip_address] -n [netmask] -m [MTU] [portgroup_name]
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