ndd(1M)ndd(1M)NAMEndd - 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 parame‐
ters 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 cate‐
gories) 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 net‐
work_device.
Get the value of the
parameter for network_device and print the value to
standard output. Returned numbers are always dis‐
played as decimal strings.
Set parameter for network_device to value.
All times are specified in milliseconds; for exam‐
ple, 240000 for 4 minutes. Unless stated other‐
wise, 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 net‐
work 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 recommended. 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 unsup‐
ported 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 automati‐
cally 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. Set‐
ting 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)