Series 200/300 and 500 Only

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(1).  vtdaemon will spawn a server to respond to each request that it receives. 

The −g option causes vtdaemon to rebroadcast all requests received on one lan device to all of the 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 then there will be no limit on the number of vtgateway servers that can be in operation concurrently. 

The −n option 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 will look for requests on. If no lan devices are specified then the default lan device is used. The major number for this device must correspond to a CIO IEEE802.3 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(1M) to communicate to another machine via local area network.  Portals are created by vtdaemon according to the configuration information found in the file /usr/lib/uucp/L-vtdevices.  Each line in L-vtdevices has the format:

<calldev>[,<lan device>] <nodename>

For each line, vtdaemon will create a portal named calldev in /dev.  Whenever this device is opened, vtdaemon will will spawn a server that will create a connection to the system specified by nodename via the lan device specified. If no lan device is specified then 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 will remove all of the portals it created in /dev before exiting. 

HARDWARE DEPENDENCIES

Series 500:

The HP 2285A lan device is not supported by vtdaemon. 

Series 200/300:

The −g option is not supported. 

FILES

/usr/contrib/lib/vtdaemonloglogfile used by vtdaemon. 
/dev/ieeedefault lan device name. 

SEE ALSO

uucico(1M), vt(1)

DIAGNOSTICS

Diagnostics messages produced by vtdaemon are written to /usr/contrib/lib/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. 

Hewlett-Packard Company  —  May 11, 2021