Lucent Technologies PortMaster - Manual (Page 90)

Configuring a Port for Access to Shared Devices
5-14 PortMaster Configuration Guide
Setting the Device Service
The device service defines the method used to connect a host to a host device port. The
following device service options can be selected:
• PortMaster
• Telnet
• Netdata
Selecting the host device port type with the PortMaster device service is sometimes
referred to as the host device configuration because the shared device you are
connecting to through the PortMaster is known to the host as /dev/tty**, where the
double asterisk (**) is the specific host device identifier.
Selecting the host device port type with the rlogin, Telnet, or netdata device service is
sometimes referred to as the network device configuration because the shared device
you are connecting to through the PortMaster is specified as /dev/network.
PortMaster Device Service
The PortMaster device service is the most efficient and highest-performance service. This
service can be used with any workstation that has the PortMaster in.pmd daemon
installed. PortMaster service is the default and preferred service because it allows the
specified port to operate like a serial port installed on the host.
When using the PortMaster device service, you must use a host device name listed in
the /dev directory of each UNIX host with access to the shared device. The standard
device entries have ranges like the following:
• /dev/ttyp0 through /dev/ttypf
• /dev/ttyq0 through /dev/ttyqf
• /dev/ttyr0 through /dev/ttyrf
These tty devices can be dynamically selected for use by a variety of host programs.
Most programs start their selection from the beginning of the device list. You should
select devices at the end of the list to maximize the possibility of finding a device
available.