HP LeftHand SAN Solutions Support Document - Service Notes - VSA 7.0 for VMware ESX

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When creating a NIC bond on a storage module, flow control for the NIC bond
is not representative of each NIC. A NIC bond may indicate that flow control
for one NIC is “enabled” and that for the second NIC, flow control
is “disabled.”
Workaround
Set flow control using the following guidelines:
• Do not change flow control settings after the bond is created.
• Flow control setting on a disabled physical NIC interface cannot
be changed.
• Flow control setting on the NIC bond is meaningless. Ignore the flow
control setting for a bonded interface.
Procedures for Enabling Flow Control on a NIC or NIC Bond:
To set flow control on a physical NIC interface
1 Enable the NIC by configuring the IP address.
2 Set flow control On for that NIC.
To set up a NIC bond with flow control enabled:
1 Enable each NIC by configuring the IP address.
2 Set flow control On for each NIC.
3 Create the bond.
To set up a NIC bond with flow control disabled:
1. Enable each NIC by configuring the IP address.
2. Set flow control Off for each NIC.
3. Create the bond.
Caution: Changing flow control settings after creating a bond
results in unpredictable flow control settings.
Caution: Creating a bond with two individual NICs that have
different flow control settings results in unpredictable flow control.