|autoselect||Enables auto-negotiation for speed and duplex.|
|Sets 10Mbps operation. Use the mediaopt option to select full-duplex mode.|
|100baseTX||Sets 100Mbps operation. Use the mediaopt option to select full-duplex mode.|
|1000baseSX||Sets 1000Mbps operation. Only full-duplex mode is supported at this speed.|
|1000baseTX||Sets 1000Mbps operation. Only full-duplex mode is supported at this speed.|
The igb driver supports the following media options:
|Forces full-duplex operation|
|Forces half-duplex operation.|
Only use mediaopt to set the driver to full-duplex. If mediaopt is not specified, the driver defaults to half-duplex.
For more information on configuring this device, see ifconfig(8).
The igb driver supports Gigabit Ethernet adapters based on the Intel 82575 and 82576 controller chips:
- Intel Gigabit ET Dual Port Server Adapter (82576)
- Intel Gigabit VT Quad Port Server Adapter (82575)
Tunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf(5).
hw.igb.rxd Number of receive descriptors allocated by the driver. The default value is 1024. The minimum is 80, and the maximum is 4096. hw.igb.txd Number of transmit descriptors allocated by the driver. The default value is 1024. The minimum is 80, and the maximum is 4096. hw.igb.enable_aim If set to 1, enable Adaptive Interrupt Moderation. The default is to enable Adaptive Interrupt Moderation. hw.igb.num_queues Number of queues used for data transfer. If set to 0, number of queues will be configured automatically based on number of CPUs and max supported MSI-X messages on the device. kern.ipc.nmbclusters The maximum number of mbuf clusters allowed. If the system has more than one igb card or jumbo frames are enabled, this value will need to be increased. kern.ipc.nmbjumbo9k The maximum number of mbuf 9k jumbo clusters allowed. Increasing this to allow for at least 8192 extra clusters per interface can allow for an mtu of 8192.
/dev/led/igb* identification LED device nodes
Make the identification LED of igb0 blink:
echo f2 > /dev/led/igb0
Turn the identification LED of igb0 off again:
echo 0 > /dev/led/igb0
igb%d: Unable to allocate bus resource: memory A fatal initialization error has occurred. igb%d: Unable to allocate bus resource: interrupt A fatal initialization error has occurred. igb%d: watchdog timeout -- resetting The device has stopped responding to the network, or there is a problem with the network connection (cable).
For general information and support, go to the Intel support website at: http://support.intel.com.
If an issue is identified with the released source code on the supported kernel with a supported adapter, email the specific information related to the issue to <email@example.com>.
The igb device driver first appeared in
.Fx 7.1 .
The igb driver was written by
.An Intel Corporation Aq firstname.lastname@example.org .