netx(8)netx(8)Namenetx - TCP/IP net exerciser
Syntax
/usr/field/netx [ -h ] [ -tn B ] [ -pm ] nodename
Description
The exerciser sets up a stream socket connection to the server in the
TCP/IP internet domain. With connection made, the exerciser writes ran‐
dom data to the server; the server loops the data back to and the data
is read and verified against the data written out.
The exerciser runs in conjunction with the server.
The exerciser by default will use the port number of the echo service
in the file. Make sure that the TCP echo service is enabled in the file
(no `#' in front of the service). The exerciser will run until or kill
-15 pid is sent to the process. The nodename is the remote or local
system host name running the server.
Options
The netx options are:
-h Print the help message for the command.
-tn Run time in minutes (n). The default is to run until the
process receives or kill -15 pid.
-pm Specify port number to use in internet domain (m < 32768).
Note that this option is not used with the server, so you
should never have to use this option.
Restrictions
If there is a need to run a system exerciser over an NFS link or on a
diskless system, there are some restrictions. For exercisers that need
to write into a file system, such as the target file system must be
writable by root. Also the directory, in which any of the exercisers
are executed, must be writable by root because temporary files are
written into the current directory. These latter restrictions are
sometimes difficult to overcome because often NFS file systems are
mounted in a way that prevents root from writing into them. Some of
the restrictions may be overcome by copying the exerciser to another
directory and then executing it.
Examples
The following example exercises the TCP/IP network from the local host
to node keel until a or kill -15 pid is received:
% /usr/field/netx keel
The following example exercises the TCP/IP network from the local host
to node photon for 180 minutes in the background:
% /usr/field/netx -t180 photon &
See Also
Guide to System Exercisers
netx(8)
