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6–Configuring NIC Functionality in the Converged Network Adapter
Configuring the NIC in a Linux Environment
FE0254601-00 A 6-29
Configuring the NIC in a Linux Environment
Configuring the QLogic 8100 Series Adapter NIC function in RHEL 5
environments can be accomplished using the following built-in utilities and
functions:
ethtool—An interface that displays and configures QLogic 8100 Series
Adapter NIC function parameters. Use ethtool to configure offload settings
and view network interface statistics. Configuration changes that you make
with ethtool are lost if the server reboots. To make persistent configuration
changes, edit the file /etc/sysconfig/network-scripts/
ifcfg-ethX.
ifconfig—A utility that configures a adapter network interface with certain
parameters such as IP address, subnet mask, or jumbo frames. Ifconfig also
displays currently active network interfaces. Any configuration changes you
make with ifconfig are lost if the server reboots. To make persistent
configuration changes, edit the file /etc/sysconfig/
network-scripts/ifcfg-ethX.
modprobe—A utility that loads and unloads a kernel module, such as the
QLogic NIC driver (qlge). modprobe also changes the values of various
driver parameters for the qlge driver. Any configuration changes that you
make with modprobe are lost if the server reboots. To make persistent
configuration changes, edit the file /etc/modprobe.conf and create a
new RAMDISK image.
ifenslave—A user-level control program that manages bonding interfaces.
vconfig—A user level utility that creates VLAN interfaces.
The following sections describe the use of these utilities and functions.
NIC Driver Parameters (Linux)
Table 6-2 lists the QLogic 8100 Series Adapter networking (NIC) driver
parameters, their default values, and allowed values. It also recommends the
utility to be used to modify these parameters.
Table 6-2. NIC Driver Parameters for Linux
Parameter Name Description
Default
Value
Allowed
Values
Configuration
Method
rx-checksumming (rx) Enables or disables
hardware receive
TCP/UDP checksum
validation
On Off, On ethtool