Bay Networks 5390 Administering page 104

Communications server

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Conﬁguring Ports

Signal init so that it reads /etc/ttytab and starts a getty now:

# kill HUP 1

Add the rtelnet command to /etc/rc so that the special ﬁle is created when the system is

The steps involved in creating this example for a System V host are:

Create a special ﬁle (pseudodevice) with rtelnet as follows:

# rtelnet -bmr 5390_02 3 /dev/ttyDB

You can specify the Model 5390 server by either its IP address or its name.

Add a line to /etc/inittab to deﬁne /dev/ttyDB as a getty line:

DB:2:respawn:/etc/getty ttyDB 9600

Signal init so that it reads /etc/inittab and starts a getty now:

# /etc/telinit q

Add the rtelnet command to the appropriate /etc/rc so that the special ﬁle is created

when the system is booted.

Conﬁguring Ports for Hosts

The Model 5390 server provides a front-end service to a host that does not have a network interface.

Attach the host's serial ports to the Model 5390 ports.

Set the mode parameter to slave.

Set the speed, data_bits, stop_bits, and parity parameters to match the requirements of the

host's serial lines.

Set the imask_7bits parameter to Y so that the Model 5390 server ignores the received parity

bit. Some UNIX hosts transmit different parity depending on whether tty is in raw or cooked

Setting the type parameter to hardwired registers the user with the who database according

to the input_is_activity and output_is_activity parameter settings. If neither parameter is

set, any user on this port is invisible to who. If input_is_activity is set, when the user enters

data, the line is registered with the who database (generally used for hardwired CLI