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ndd(1m) [hpux man page]

ndd(1M) 																   ndd(1M)

NAME
ndd - network tuning SYNOPSIS
network_device parameter network_device parameter value [parameter] DESCRIPTION
The command allows the examination and modification of several tunable parameters that affect networking operation and behavior. It accepts arguments on the command line or may be run interactively. The option displays all the supported and unsupported tunable parameters that provides in the following categories: ARP, IP, IPSEC, IPV6, IPV6 Neighbor Discovery (ND), RAWIP, RAWIP6, SOCKET, TCP, and UDP. The tunable parameters in each category may be accessed with the proper valid network_device name. The network_device name is referred to as in The valid network_device names (and their associated parameter categories) are: (ARP), (IP and IPSEC), (IPV6, IPV6 Neighbor Discovery, and IPSEC v6), (RAWIP), (RAWIP6), (SOCKET), (TCP), and (UDP). Set parameter to to get a list of parameters for a particular network_device. Get the value of the parameter for network_device and print the value to standard output. Returned numbers are always displayed as decimal strings. Set parameter for network_device to value. All times are specified in milliseconds; for example, 240000 for 4 minutes. Unless stated otherwise, numbers are assumed to be in decimal. Use "0x" prefix to specify hexadecimal values. In general, all tunable parameters are global; in other words, they affect all instances of the network module. Some settings take effect immediately, while others are used to initialize data for an instance and will only affect newly opened streams. Display all the supported tunable parameters. This set of parameters are supported by HP and detailed descriptions of these tunable parameters are available through the parameter command. Display all the unsupported tunable parameters. This set of parameters are not supported by HP and modification of these tunable parameters are not suggested nor rec- ommended. Setting any unsupported tunable parameters on your system may result in adverse effects to your networking operations. When parameter is specified, a detail description of the parameter, along with its minimum, maximum, and default value are displayed. If no parameter is specified, it displays all supported and unsupported tunable parameters. Read input from the configuration file and set the tunable parameters. A user may specify tunable parameters in the nddconf configuration file, and these parameters will be set automatically each time the system boots. DIAGNOSTICS
When the command fails, an error message is printed to the standard error and the command terminates with an exit value of one. WARNINGS
Care must be used when setting parameters for a network_device. Setting a tunable parameter to an inappropriate value can result in adverse affects to your networking operations. EXAMPLES
To get help information on all supported tunable parameters: To get a detail description of the tunable parameter, To get a list of all TCP related parameters: To get the current value of the tunable parameter, To set the value of the default TTL parameter for UDP to 128: FILES
Contains tunable parameters that will be set automatically each time the system boots. AUTHOR
was developed by HP. ndd(1M)

Check Out this Related Man Page

NSTRSCHED(5)							File Formats Manual						      NSTRSCHED(5)

NAME
NSTRSCHED - number of STREAMS scheduler daemons to run VALUES
Failsafe Default Allowed values Recommended values DESCRIPTION
This tunable defines the number of multiprocessor (MP) STREAMS scheduler daemons to run on systems containing more than one processor. Note that uniprocessor (UP) systems do not use an MP scheduler daemon, but both MP and UP systems always have one UP STREAMS scheduler (supsched). If the tunable value is set to zero, the system determines how many daemons to run, based on the number of processors in the system. If the tunable value is set to a positive, non-zero value, that is the number of smpsched daemons that will be created on an MP system. Note: This tunable is for use by specific HP products only. It may be removed in future HP-UX releases. Who Is Expected to Change This Tunable? Any customer. Restrictions on Changing Changes to this tunable take effect at next reboot. When Should the Value of This Tunable Be Raised? This tunable is for use by specific HP products only. It may be removed in future HP-UX releases. What Are the Side Effects of Raising the Value of This Tunable? It could change the system performance unpredictably. When Should the Value of This Tunable Be Lowered? This tunable is for use by specific HP products only. It may be removed in future HP-UX releases. What Are the Side Effects of Lowering the Value of This Tunable? It could change the system performance unpredictably. What Other Tunable Should Be Changed at the Same Time as This One? None. WARNINGS
This tunable is for use by specific HP products only. All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of HP-UX. Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation, some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun- able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was factory installed on your system, see at AUTHOR
was developed by HP. Tunable Kernel Parameters NSTRSCHED(5)
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