Chapter 5 Configuring thenxge Device Driver Parameters 37

▼To Specify Device Instances for the ndd Utility

Before you use the ndd utility to get or set a parameter for a nxge device, you must
specify the device instance for the utility.
1. Check the /etc/path_to_inst file to identify the instance associated with a
particular device.

▼To Specify Parameter Values Using the ndd

Utility
This section describes how to modify and display parameter values.
1. To modify a parameter value, use the -set option.
If you invoke the ndd utility with the -set option, the utility passes value, which
must be specified, down to the named /dev/nxgedriver_instance, and assigns the
value to the parameter:
Where Xis the driver instance, for example /dev/nxge0, /dev/nxge1.
2. To display the value of a parameter, specify the parameter name and omit the
value.
When you omit the -set option, the utility queries the named driver instance,
retrieves the value associated with the specified parameter,and prints it:

▼To Use the ndd Utility in Interactive Mode

1. To modify a parameter value in interactive mode, specify ndd /dev/nxgeX:
#grep nxge /etc/path_to_inst
"/pci@7c0/pci@0/pci@9/network@0" 0 "nxge"
"/pci@7c0/pci@0/pci@9/network@0,1" 1 "nxge"
#ndd -set /dev/nxgeX parameter-value
#ndd /dev/nxgeX parameter
#ndd /dev/nxge0
name to get/set? (Enter the parameter name or ? to view all
parameters)