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vtdaemon(1M)

HP-UX 11i Version 3: February 2007
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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.

SEE ALSO

vt(1), uucico(1M).

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