Q-Logic 8100 SERIES 用户手册

6–Configuring NIC Functionality in the Converged Network Adapter

Configuring the NIC in a Linux Environment

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The driver parameters described in 

 can be modified using various 

methods. Some of these parameters require a server reboot or a reload of the 
QLogic NIC driver (qlge). This section describes how to modify the QLogic 8100 
Series Adapter NIC function parameters.

Available by default in RHEL 5, modprobe is a Linux utility that intelligently adds or 
removes a module from the Linux kernel. The QLogic drivers for the 8100 Series 
Adapter are compiled and used as a module. Any driver parameter that is 
modified using this method requires that the QLogic driver be reloaded (for 
nonpersistent changes) or rebooted (for persistent changes). Therefore, this 
method disrupts I/O operations on the host.

mtu

Jumbo Packet 
enables jumbo 
packet capability for 
TCP/IP packets. In 
situations where 
large packets make 
up the majority of 
traffic, and additional 
latency can be toler-
ated, Jumbo packets 
can reduce CPU use 
and improve wire effi-
ciency. FCoE traffic 
uses an Ethernet 
frame size of 2554 
bytes (baby jumbo).

1500

9000

Sysfs, ifconfig

Not all parameters can be modified using the same utility or function. Refer 
to 

 for information about available configuration methods for each 

parameter.