The
following files are used for outbound calls:
/etc/ppp/Devices
associates dialer types with physical devices and speeds. pppd
examines the file when it places a call. If no suitable speed is
found or if all devices associated with that speed are busy, pppd
tries again later.
/etc/ppp/Dialers
describes how to dial each type of modem attached to the HP-UX system
that is to be made available for outbound calls.
/etc/ppp/Systems
contains the hostname or IP address of peers and how to connect
with peers.
/etc/ppp/Autostart
starts pppd for on-demand outbound
calls.
/etc/ppp/Devices |
 |
The
Devices file associates dialer
types with physical devices and speeds. Entries in the file have
the following format:
dialer device speed [optional_parameters] |
If the PPP connection is a direct connection, the dialer field
should be "Direct." Refer to the ppp.Devices(4)
man page for more information.
In our example, the following entry is made to robin's Devices
file:
This line provides this configuration for robin's connection
to lark:
- Use what
modem:
T1600 (Telebit model 1600)
- On which system device:
cuh00 (outbound device)
- At what speed:
19200 (19200 bps)
/etc/ppp/Dialers |
|
The
Dialers file describes how to dial
each modem that is attached to the local system. The file Dialers
is installed with PPP. Entries in the file have the following format:
Refer to the ppp.Dialers(4)
man page for more information.
In our example, the Dialers
file is already installed on robin. Here is what the entry for
the Telebit model 1600 looks like:
T1600 ABORT NO\sCARRIER ABORT NO\sDIALTONE ABORT BUSY \
ABORT RRING\r\n\r\nRRING\r\n\r\nRRING ABORT ERROR \
TIMEOUT 5 "" AT OK-AT-OK ATS111=0DT\T TIMEOUT 60 CONNECT |
his elaborate dialer string will cause pppd
to abort the connection attempt if anything goes wrong with the
telephone call, then will disable UUCP spoofing in the modem before
dialing the destination telephone number. Look through the Dialers
file for modem entries for your type of modem. If none are defined,
use the dialer entry "GENERIC".
You can create a separate list of modem descriptions in a
file named Dialers.local. Entries
in Dialers.local take precedence
over entries in Dialers. You can
use the entries from the Dialers
file to guide you as you create new entries in Dialers.local.
See the ppp.Dialers(4) man page
for more information about setting up dialer entries.
Since your modem may be used for other purposes besides PPP
(for example, UUCP or for interactive users), it is best to set
the modem's default parameters to accommodate dial-in applications
and have outgoing UUCP or PPP dialers change them if necessary.
The PPP-specific register settings in Dialers
or Dialers.local ensure that an
otherwise general-purpose modem will work as well as possible with
PPP for the duration of the PPP session.
/etc/ppp/Systems |
|
The
Systems file contains the hostname
or IP address of peer systems and how to connect to them. Entries
in the file have the following format:
name when device speed phone_number chat_script |
Refer to the ppp.Systems(4)
man page for more information.
For our example, the following line is added to the Systems
file on robin to connect to lark:
lark Any ACU 19200 5551212 in:--in: Probin word: mypasswd |
This line provides this configuration for robin's connection
to lark:
- Call what
host:
lark
- When:
Any (any day and at any time).
- Using what device:
ACU (any call unit that matches the speed listed
in the next field).
- At what DTE speed:
19200 (19200 bps)
- At what telephone #:
5551212
- Expect what string:
in: substring of login: if true, send next field.
If false, send string between dashes followed by carriage return
and expect in: Can be used to elicit a response out of peer.
- Send what string:
Probin (followed by an implicit carriage return).
- Expect what string:
word (a substring of password).
- Send what string:
mypasswd (followed by an implicit carriage return).
/etc/ppp/Autostart |
|
All
outbound PPP connections are started through the user-generated
/etc/ppp/Autostart file. When the
local system is booted, a pppd
process is started for the outbound link to the remote system. There
is no example Autostart file; you
must create it. It contains the command line necessary to start
pppd:
pppd local_host:remote_host daemon_mgt_opt link_mgt_opt idle_timer |
Refer to the pppd(1) man
page for information on command line options.
In our example, here is the Autostart
entry on robin for connecting to lark:
pppd robin:lark auto idle 150 |
The pppd started here has
this connection configuration:
- Local and
remote hosts:
robin and lark, respectively
- Daemon mgmt. option:
Auto (respond to the arrival of a packet by initiating
a connection to peer).
- Link management option:
Idle (idle timer in effect).
- Idle timer value:
150 (shut down the link if 150 seconds pass without
receiving or transmitting a packet.
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