Intel 10 Gigabit AT Ethernet Server Adapter, Руководство пользователя, Страница: 148 / 165

System Wakes-Up from a Removed VLAN
If a system goes into standby mode, and a directed packet is sent to the IP address of the removed VLAN, the
system will wake-up. This occurs because a directed packet bypasses VLAN filtering.
Intel Adapters ignore consecutive Wake Up signals while transitioning into standby mode
While sending a system into standby, occasionally a wake up packet arrives before the system completes the
transition into standby mode. When this happens, the system ignores consecutive wake up signals and
remains in standby mode until manually powered up using the mouse, keyboard, or power button.
Other Intel 10GbE Network Adapter Known Issues
ETS Bandwidth Allocations Don't Match Settings
When Jumbo Frames is set to 9K with a 10GbE adapter, a 90%/10% ETS traffic split will not actually be
attained on any particular port, despite settings being made on the DCB switch. When ETS is set to a
90%/10% split, an actual observed split of 70%/30% is more likely.
Link Loss on 10GbE Devices with Jumbo Frames Enabled
You must not lower Receive_Buffers or Transmit_Buffers below 256 if jumbo frames are enabled on an Intel®
10GbE Device. Doing so will cause loss of link.
Failed connection and possible system instability
If you have non-Intel networking devices capable of Receive Side Scaling installed in your system, the
Microsoft Windows registry keyword “RSSBaseCPU” may have been changed from the default value of 0x0
to point to a logical processor. If this keyword has been changed, then devices based on Intel® 82598 or
82599 10 Gigabit Ethernet Controllers might not pass traffic. Attempting to make driver changes in this state
may cause system instability. Set the value of RSSBaseCpu to 0x0, or to a value corresponding to a physical
processor, and reboot the system to resolve the issue.
Continuous PFC pause frames sent from Intel® Ethernet X520 based devices
If you have an Intel® Ethernet X520 based device connected to a switch port and modify the DCB bandwidth
settings on the switch port, the Intel® Ethernet X520 device may perpetually send pause frames, causing a
storm, and fail to transfer data to and from the storage targets it was using. To recover from this issue, disable
the X520 ports, re-enable them, and then reconnect to the iSCSI target volumes. To avoid the issue, if the
DCB bandwidth settings need to be changed, do one of the following:
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Power down the server that contains the Intel® Ethernet X520 device prior to modifying the DCB band-
width settings.
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Disable the switch ports connected to Intel X520 based device.
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Have no traffic running on the Intel X520 based device.
Unexpected NMI with 82599-based NICs
If you set the PCIe Maximum Payload Size to 256 bytes in your system BIOS and install an 82599-based
NIC, you may receive an NMI when the NIC attains link. This happens when the physical slot does not
support a payload size of 256 Bytes even if the BIOS does. Moving the adapter to a slot that supports 256
bytes will resolve the issue. Consult your system documentation for information on supported payload values.
X710/XL710 Known Issues
Some Intel® X710 based devices report a subvendor ID of 0x0000 and may display a generic branding string.
Port 0 reports the correct subvendor ID and displays the correct branding string.