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S_N_D.8
Upload User: jnzhq888
Upload Date: 2007-01-18
Package Size: 51694k
Code Size: 2k
Category:
OS Develop
Development Platform:
WINDOWS
- .TH SET_NET_DEFAULT 8
- .SH NAME
- s_n_d, set_net_default - select the default TCP/IP network
- .SH SYNOPSIS
- .B "set_net_default: not found"
- .SH DESCRIPTION
- This manual page is here because so many others refer to it. The
- .B set_net_default
- command does not exist under standard Minix, because the TCP/IP server only
- supports one network. The server under Minix-vmd supports four different
- networks, that can each be chosen as the default network.
- .PP
- The TCP/IP library and commands do have a notion about a "default network"
- however, because the code is shared between the Minix versions. So if you
- want to venture into network programming then you should know about the
- devices and environment variables mentioned below to make your program
- compatible. (Especially since there is a plan to upgrade the TCP/IP server
- for standard Minix.)
- .SS "Options and environment to change the default"
- Many TCP/IP programs implement the following options and environment
- variables to change the default devices set by
- .BR set_net_default .
- The options are only implemented for low level programs where it makes sense
- to name a network device. The environment variables are used in all code.
- You can run a process and all its children connected to a different network
- by setting four environment variables.
- .PP
- .BI ETH_DEVICE= device
- .br
- .BI -E " device"
- .RS
- Device to use as raw ethernet device instead of the default /dev/eth.
- .RE
- .PP
- .BI PSIP_DEVICE= device
- .br
- .BI -P " device"
- .RS
- Pseudo IP device to use instead of /dev/psip.
- .RE
- .PP
- .BI IP_DEVICE= device
- .br
- .BI -I " device"
- .RS
- IP device to use instead of /dev/ip.
- .RE
- .PP
- .BI TCP_DEVICE= device
- .br
- .BI -T " device"
- .RS
- TCP device to use.
- .RE
- .PP
- .BI UDP_DEVICE= device
- .br
- .BI -U " device"
- .RS
- UDP device to use.
- .RE
- .SH FILES
- .IP /dev/eth[01] 18n
- First and second raw ethernet.
- .IP /dev/psip[01]
- First and second Pseudo IP network.
- .IP /dev/ip[0123]
- IP devices for two ethernets and two Pseudo IP networks.
- .IP /dev/tcp[0123]
- TCP devices for same four networks.
- .IP /dev/udp[0123]
- UDP devices.
- .IP "/dev/eth, /dev/psip, /dev/ip, /dev/tcp, /dev/udp"
- Devices for the default network, links to the devices above.
- .B Eth
- is only present if ethernet is the default,
- .B psip
- only for pseudo IP.
- .SH "SEE ALSO"
- .BR ip (4),
- .BR boot (8).
- .SH AUTHOR
- Kees J. Bot (kjb@cs.vu.nl)
