test

Solstice PPP 3.0.1 Administration Guide

Null Modem Configuration

The null modem configuration is used to connect two hosts together directly. There are no modems required. See Appendix B, Modem and Null Modem Cables for a description of the null modem cables that can be used for this configuration.

Figure 5-6 Null Modem Configuration

Graphic

In this example, the server has two asynchronous null modem connections to the clients lab0251-ppp and lab0252-ppp. The modem keyword in the link.conf file is always set to none, and a dummy telephone number is assigned to the server.

Note -

There is a limitation in this revision of the product that means that you must always specify a telephone number to initiate an asynchronous connection, even if it is never actually used.

PPP Configuration File (ppp.conf) for lab0251-ppp:


ifconfig ipdptp0 plumb
ifconfig ipdptp0 lab0251-ppp server netmask 255.255.255.0 down

dialup_path
    ip_interface          ipdptp0
    remote_host           server
    inactivity_timeout    120

Link Configuration File (link.conf) for lab0251-ppp:


dialup_device pppdev0
    unix_device      ttya
    line_speed       38400
    modem            none
    call_setup       dial

remote_host server
    phone            1001
    chat_script      server.script

CHAT script (server.script) used by lab0251-ppp to call server:


# Set the line regarding the remote site configuration
# Due to UUCP limitations some systems only accept cs7
#
# setline	cs7 parodd

send	   RETURN
expect	 "ogin:"  10  onerror send BREAK repeat 3

send	   "lab0251"
expect	 "word: " 40
#
# Set the ppp password of the remote host here
#
send	  "lab0251-pass"

PPP Configuration File (ppp.conf) for lab0252-ppp:


ifconfig ipdptp0 plumb
ifconfig ipdptp0 lab0252-ppp server netmask 255.255.255.0 down

dialup_path
    ip_interface          ipdptp0
    remote_host           server
    inactivity_timeout    120

Link Configuration File (link.conf) for lab0252-ppp:


dialup_device pppdev0
    unix_device           ttya
    line_speed            38400
    modem                 none
    call_setup            dial

remote_host server
    phone                 1001
    chat_script           server.script

CHAT script (server.script) used by lab0252-ppp to call server:


# Set the line regarding the remote site configuration
# Due to UUCP limitations some systems only accept cs7
#
# setline	cs7 parodd

send	   RETURN
expect	 "ogin:"  10  onerror send BREAK repeat 3

send	   "lab0252"
expect	 "word: " 40
#
# Set the ppp password of the remote host here
#
send	  "lab0252-pass"

PPP Configuration File (ppp.conf) for server:


ifconfig ipdptp0 plumb
ifconfig ipdptp0 server lab0251-ppp netmask 255.255.255.0 down

ifconfig ipdptp1 plumb
ifconfig ipdptp1 server lab0252-ppp netmask 255.255.255.0 down

dialup_path
    ip_interface        ipdptp0
    expect_login_id     lab0251
    inactivity_timeout  0

dialup_path
    ip_interface        ipdptp1
    expect_login_id     lab0252
    inactivity_timeout  0

Link Configuration File (link.conf) for server:


dialup_device pppdev
    unix_device         tty0
    line_speed          38400
    modem               none
    call_setup          answer

		dialup_device pppdev1
    unix_device         tty1
    line_speed          38400
    modem               none
    call_setup          answer