10GigEthr-02 (iexgbe) B.11.31.1205 Ethernet Driver Release Notes

4 Known problems and limitations
The following problems and limitations are known to exist in version B.11.31.1205:
• Rx flow control must be disabled when Jumbo Frames are used.
Due to limitations of the hardware supported by the iexgbe driver, Rx flow control must be
disabled when Jumbo Frames (MTU value greater than 1500) are enabled. This limitation is
enforced by the iexgbe driver. Therefore, if the current configuration has Rx flow control
enabled while Jumbo Frames are used, the iexgbe driver will not honor changes made to
flow control settings. Setting Jumbo Frames will override and disable the Rx flow control
settings.
NOTE: For the Flex-10 interface, Rx flow control is always set to OFF.
For the non-Flex-10 interface, you can change the flow control and MTU size as needed.
However, when Jumbo Frames are enabled, if Rx flow control is already set to ON, the driver
automatically resets RX flow control to OFF. Rx flow control and Jumbo Frames cannot both
be in operation at the same time.
• Rx flow control is disabled in Flex-10 mode
In Flex-10 mode (Virtual Connect), Rx Flow control is disabled by default. Attempts to enable
Rx flow control are not honored by the driver, because the driver and hardware cannot
determine whether Jumbo Frames are disabled across all FlexNICs.
• Using ncweb to change number of receive queues causes an error message.
Severity: Medium
When you use the ncweb or SMH interface to change the number of receive queues, an error
message appears.
Workaround: Use nwmgr instead of ncweb to change number of the queues. The command
syntax is:
nwmgr -s -A drv_mq=<new#> -c lan<instance>
where
<new#> The number of queues that you want to enable.
<instance> Instance number of the LAN interface; for example, lan1.
5 Compatibility and installation requirements
This section describes the compatibility information and installation requirements for this release.
• For specific installation instructions, see the installation procedure or overview document for
your card.
• For detailed information on supported server platforms, operating systems, and firmware level
requirements, see the Ethernet Support Matrix.
These documents are available at:
http://www.hp.com/go/10-gigabit-ethernet-docs
5.1 Operating system and version compatibility
This release is specific for HP-UX 11i v3 (B.11.31).
5.2 Hardware requirements
This version of 10GigEthr-02 runs on HP Integrity servers with the HP-UX 11i v3 (B.11.31) operating
system. This configuration has specific version requirements for many system components:
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