Dell Intel PRO Family of Adapters - Manual (Page 120)

PCI Express Configuration Troubleshooting
If the adapter is not recognized by your OS or if it does not work you may need to change some BIOS Setup program
settings. Try the following only if you are having problems with the adapter.
l Check to see that the "Plug-and-Play" setting is compatible with the operating system you are using.
l Enable the PCI Express slot. In some PCI computers, you may need to use the BIOS Setup program to enable
the slot.
l Reserve interrupts and/or memory addresses. This prevents multiple buses or bus slots from using the same
interrupts. Check the BIOS for IRQ options.
Known Issues
Intermittent Failure to Remote Boot with X540 Adapter on SLES 11 SP3
Remote boot with SuSE11 SP3 and an x540 adapter can intermittently fail to complete. This is due to a timing issue
involving DCB in some hardware configurations.
A fix for this issue can be found at SuSE FCoE Bootable Driver Kit .
Dropped Receive Packets on Half-Duplex 10/100 Networks
If you have an Intel PCI Express adapter installed, running at 10 or 100 Mbps, half-duplex, with TCP Segment Offload
(TSO) enabled, you may observe occasional dropped receive packets. To work around this problem, disable TSO or
update the network to operate in full-duplex or 1 Gbps.
Throughput Reduction After Hot-Replace
If an Intel gigabit adapter is under extreme stress and is hot-swapped, throughput may significantly drop. This may be
due to the PCI property configuration by the Hot-Plug software. If this occurs, throughput can be restored by restarting
the system.
CPU Utilization Higher Than Expected
Setting RSS Queues to a value greater than 4 is only advisable for large web servers with several processors. Values
greater than 4 may increase CPU utilization to unacceptable levels and have other negative impacts on system per-
formance.
Low-Power Link Speed Slower Than Expected
If you disable the "Reduce Power During Standby" setting and remove power from the system, your system may link at
10 Mbps when power is restored, instead of 100 Mbps or faster. The system will continue to link at 10 Mbps until the
operating system is loaded. This setting will be restored when the operating system loads.
VLAN Creation Fails on a Team that Includes a Non-Intel Phantom Adapter
If you are unable to create a VLAN on a team that includes a non-Intel phantom adapter, use Device Manager to
remove the team, then recreate the team without the phantom adapter, and add the team to the VLAN.
Team/VLAN Static IP Information May Not Always be Restored
In a Windows Server environment, if you configured team or VLAN static IP information, when you upgrade the Intel Net-
work Connection Software (versions 11.0 or below), the configured items may not always be restored and the default
team and VLAN values are used.
A VLAN Created on an Intel Adapter Must be Removed Before a Multi-Vendor Team Can be Created.
In order to create the team, the VLAN must first be removed.