6.0

5 Click Add and select a VMkernel adapter to bind with the iSCSI adapter.
You can bind the software iSCSI adapter to one or more VMkernel adapters. For a dependent hardware
iSCSI adapter, only one VMkernel interface associated with the correct physical NIC is available.
6 Click OK.
The network connection appears on the list of VMkernel port bindings for the iSCSI adapter.
7 Verify that the network policy for the connection is compliant with the binding requirements.
Using Jumbo Frames with iSCSI
ESXi supports the use of Jumbo Frames with iSCSI.
Jumbo Frames are Ethernet frames with the size that exceeds 1500 Bytes. The maximum transmission unit
(MTU) parameter is typically used to measure the size of Jumbo Frames. ESXi allows Jumbo Frames with
the MTU up to 9000 Bytes.
When you use Jumbo Frames for iSCSI traffic, the following considerations apply:
n
The network must support Jumbo Frames end-to-end for Jumbo Frames to be effective.
n
Check with your vendors to ensure your physical NICs and iSCSI HBAs support Jumbo Frames.
n
To set up and verify physical network switches for Jumbo Frames, consult your vendor documentation.
The following table explains the level of support that ESXi provides to Jumbo Frames.
Table 24‑2. Support of Jumbo Frames
Type of iSCSI Adapters Jumbo Frames Support
Software iSCSI Supported
Dependent Hardware iSCSI Supported. Check with vendor.
Independent Hardware iSCSI Supported. Check with vendor.
Enable Jumbo Frames for iSCSI
Use the vSphere Client to enable Jumbo Frames for each vSphere standard switch and VMkernel adapter
designated for iSCSI traffic.
Enable Jumbo Frames on the Standard switch and VMkernel adapter by changing the maximum
transmission units (MTU) parameter.
Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 Log in to the vSphere Client, and select a host from the inventory panel.
2 Click the Configuration tab and click Networking.
3 Click Properties for the standard switch you use for iSCSI traffic.
4 On the Ports tab, select the standard switch and click Edit.
5 Set the MTU parameter for the standard switch, and click OK.
This step sets the MTU for all physical NICs on that standard switch. The MTU value should be set to
the largest MTU size among all NICs connected to the standard switch.
6 On the Ports tab, select the VMkernel adapter and click Edit.
Chapter 24 Managing Storage in the vSphere Client
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