HP-UX Reference (11i v1 00/12) - 4 File Formats (vol 8)

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/build/1111/BRICK/man4/!!!intro.4

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ppp.Systems(4) ppp.Systems(4)

NAME

ppp.Systems - PPP neighboring systems description ﬁle format

DESCRIPTION

The ﬁle /etc/ppp/Systems describes how to connect with neighboring systems via PPP.

Format

Entries are one to a line; blank lines are ignored. Comments begin with a ‘#’ and extend to the end of the

line. Upper/lower case distinctions are ignored in hostname speciﬁcations, but are signiﬁcant elsewhere.

Fields on a line are separated by horizontal white space (blanks or tabs). If a chat script ends with a

backslash (‘\’), the next line is considered a continuation of the chat script. Continuations may only occur

in the midst of a chat script.

Each entry must contain six ﬁelds, in the following order:

name The hostname or IP address of the destination machine, which should be resolvable locally.

when A string that indicates the days of the week and the times of day when the system can be called

(for example, MoTuTh0800-1740). The day portion may be a list containing any of Su, Mo, Tu,

We, Th, Fr or Sa. The day may also be Wk for any weekday (same as MoTuWeThFr) or Any for

any day (same as SuMoTuWeThFrSa).

You can indicate hours in a range (for example, 0800-1230). If you do not specify a time, calls

will be allowed at any time.

Note that a time range that spans 0000 is permitted. For example, 0800-0600 means that all

times are allowed except times between 6 AM and 8 AM.

Multiple date speciﬁcations that are separated by a vertical bar (|) are allowed. For example,

Any0100-0600|Sa|Su means that the system can be called any day between 1 AM and 6 AM or

any time on Saturday and Sunday.

The entire (sequence of) days and times may be followed by a semicolon and up to three decimal

numbers separated by hyphens:

one If only one number follows the semicolon, it is used as the redial delay, which is the ini-

tial time (in seconds) before a failed call will be retried. For example, Any;60 means call

any time, but wait at least 60 seconds after a failure has occurred before trying to call

again. If a call retry fails,

pppd will double the delay before trying again. If no initial

retry delay is speciﬁed, 10 seconds is assumed.

two If two numbers follow the semicolon, the second number is used as the maximum redial

delay, which is the maximum time (in seconds) to delay before retrying a call. The retry

time will double with each unsuccessful call until it reaches this value, after which the

call will be retried every time the maximum number of seconds passes. If no maximum

retry delay is speciﬁed, 3600 seconds is assumed.

three If three numbers follow the semicolon, the ﬁrst is used as the callback delay, the second

as the redial delay, and the third as the maximum redial delay. The callback delay is

the time (in seconds) to wait before attempting to re-establish a previously active con-

nection that ended because of an abrupt line disconnection (a Hangup or SIGHUP event

in the log ﬁle). The default is not to delay before calling back.

During the delay following an unsuccessful call, any level 7 debugging messages written to

pppd.log will have the message ‘dial failed’ appended.

device If set to ‘ACU’, any device in Devices with a matching speed may be used. The device’s dialer

chat script will be executed ﬁrst, followed by the

Systems chat script.

If set to the name of a device in the /dev directory (tty00, cua, etc.), then there may be an

optional corresponding Direct entry in Devices, Dialers will not be consulted, and only

the Systems chat script will be executed.

If set to ‘tcp’, then it must be followed by a slash, then the hostname or IP address of the system

that will serve as the destination of the PPP link, then another slash, then the socket number on

which to contact the remote PPP daemon.

speed The speed of the connection. If the device ﬁeld is ACU, the speed ﬁeld will be string matched

against entries in Devices. Speeds must either be valid speed numbers or must begin with

them (2400, 38400, 19200-PEP, etc.). If the device ﬁeld is ‘tcp...’ or ‘telnet...’, the speed ﬁeld is

Section 4−−224 − 1 − HP-UX Release 11i: December 2000

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