NAME
vtdaemon — respond to vt requests
SYNOPSIS
vtdaemon
[-g[ngateway]]
[-n]
lan_device
lan_device ...
DESCRIPTION
vtdaemon
responds to requests from other systems (via local area network) made by
vt
(see
vt(1)).
vtdaemon
spawns a server to respond to each request that it receives.
Options
vtdaemon
recognizes the following command-line options and arguments:
- -g[ngateway]
Causes
vtdaemon
to rebroadcast all requests received on one lan device
to all other lan devices specified on the command line.
The optional parameter
ngateway
specifies the maximum number of
vtgateway
servers that can be in operation concurrently.
If
ngateway
is not specified, there is no limit
on the number of vtgateway servers that can be in operation concurrently.
- -n
Causes
vtdaemon
to ignore all requests that have come through a gateway.
The remaining arguments are the full path names of lan devices that
vtdaemon
looks for requests on.
If no lan devices are specified,
the default lan device is used.
The major number for this device must correspond to a IEEE 802.3
local area network device.
Another function of
vtdaemon
is to create
portals
and service portal requests.
A
portal
is a callout device that can be used by
uucico
to communicate to another machine via local area network (see
uucico(1M)).
Portals are created by
vtdaemon
according to the configuration information found in the file
/etc/uucp/L-vtdevices.
Each line in
L-vtdevices
has the format:
<calldev>[,<lan device>] <nodename>
For each line,
vtdaemon
creates a portal named
calldev
in
/dev.
Whenever this device is opened,
vtdaemon
spawns a server that creates a connection to the system specified by
nodename
via the lan device specified.
If no lan device is specified,
the first one specified on the command line when
vtdaemon
was started is used (or the default lan device is used
if no lan devices were specified on the command line).
vtdaemon
should be terminated by sending signal
SIGTERM
to it.
When
vtdaemon
receives this signal it removes all of the portals it created in
/dev
before exiting.
DIAGNOSTICS
Diagnostics messages produced by
vtdaemon
are written to
/var/adm/vtdaemonlog.
WARNINGS
vtdaemon
uses the Hewlett-Packard
LLA
(Link Level Access) direct interface to the HP network drivers.
vtdaemon
uses the multicast address
0x01AABBCCBBAA.
It should not be used or deleted by other applications accessing the
network.
vtdaemon
uses the following IEEE 802.3
sap
(service access point) values:
0x90,
0x94,
0x98,
0x9C,
0xA0,
0xA4,
0xA8,
0xAC,
0xB0,
0xB4,
0xB8,
0xBC,
0xC0,
0xC4,
0xC8,
0xCC,
0xD0,
and
0xD4.
They should not be used by other applications accessing the network.
Desktop HP-UX
If your system has been installed with the Desktop HP-UX product, then both
ptydaemon
and
vtdaemon
will not be started by default.
In order to start these daemons, change
PTYDAEMON_START
and
VTDAEMON_START
from a "0" to a "1" in the
/etc/rc.config.d/ptydaemon
and
/etc/rc.config.d/vt
files, respectively.
The system must either be rebooted for these changes to
take effect, or you can manually start both daemons by typing :
/usr/sbin/ptydaemon
/usr/sbin/vtdaemon /dev/lan0
where
/dev/lan0
is the character special device file corresponding to the IEEE802.3 local area
network device.
FILES
- /var/adm/vtdaemonlog
logfile used by
vtdaemon.
- /dev/lan0
default lan device name.
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