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

dlpi_max_ub_promisc(5)						File Formats Manual					    dlpi_max_ub_promisc(5)

NAME

       dlpi_max_ub_promisc - maximum number of unbound promiscuous streams allowed on a LAN interface

VALUES

   Failsafe
   Default
   Allowed values
       or

   Recommended values
DESCRIPTION

       The  tunable  is  used  to  dynamically	increase or decrease the maximum number of unbound promiscuous streams that can be opened on a LAN
       interface.

       Enabling multiple unbound promiscuous streams may cause CPU utilization to increase up to three times as compared to CPU  utilization  with
       no unbound promiscuous streams.	Increasing the value of this tunable does not by itself degrade networking or kernel performance.

   Who Is Expected to Change This Tunable?
       Privileged user.

   Restrictions on Changing
       Changes	to this tunable take effect immediately.  When value is reduced from a higher value to a lower value, the existing unbound promis-
       cuous streams will not be stopped to accommodate the change.  However, this tunable will limit the  new	unbound  streams  created  on  the
       interface.

   When Should the Value of This Tunable Be Raised?
       This tunable should be raised when the number of unbound promiscuous applications needs to be more than the default value.

   What Are the Side Effects of Raising the Value?
       Side effect may be an increase in CPU utilization.

WARNINGS

       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.

SEE ALSO

       kctune(1M), lanadmin(1M), gettune(2), settune(2), lan(7).

       DLPI Programmer's Guide on

							     Tunable Kernel Parameters					    dlpi_max_ub_promisc(5)

Linux and UNIX Man Pages

ndd(1m) [hpux man page]

Check Out this Related Man Page