R2511-HP MSR Router Series Terminal Access Configuration Guide(V5)

the ttyd, ttyadmcmd, and ttyadm programs to your SCO OpenServer Unix server. The installation

procedure is as follows:

1. Copy the installation file VOL.000.000 to a directory on the SCO OpenServer Unix server. The

following example assumes that the installation file is copied to the directory /build. Type

scoadmin to open the SCO manager.

2. From [\File\Software Manager], select [\Software\Install New...] to enter software installation

interface, and then select local installation.

3. Select [Media Images] for Media Device.

4. In [Image Directory], enter the directory holding the installation file (this example assumes

VOL.000.000 is placed in the directory /build). Press <Enter>, and information about the

programs under the directory that can be installed will be listed, such as " ttyd for sco openserver

5.05".

5. Select [Install] to start the installation. After the programs are installed, a message of "OK" is

displayed.

Now, the ttyd, ttyadmcmd, and ttyadm programs are all installed.

Configuration prerequisites

Before configuration, you must determine the mappings between pseudo terminals on the Unix server

and ports on the router.

If the Unix system is connected with many terminals, the required resources may exceed the default of the

Unix system. In this case, you must modify the kernel parameters of the Unix system.

The method for modifying the kernel of the SCO OpenServer Unix system is as follows:

Adding pseudo terminals

CAUTION:

hen the kernel is compiled, /etc/inittab is overwritten by /etc/conf/cf.d/init.base. Therefore, back up

etc/inittab before creatin

a new kernel.

By default, SCO OpenServer Unix supports up to 64 pseudo terminals. To connect to more terminals, you

must add pseudo terminals on the Unix system.

Before adding pseudo terminals, check whether the pseudo terminals exist. For example, you can use the

following command to check whether ttyp50/ptyp50 devices exist. Generally, ttyp and ptyp devices are

present in pairs and each pair shares the same device number.

# ls -l /dev/ttyp50 /dev/ptyp50

If pseudo terminals exist, the console displays the following information:

crw-rw-rw- 1 root sys 59, 50 Aug 6 18:44 /dev/ptyp50

crw------- 1 bin terminal 58, 50 Aug 15 16:24 /dev/ttyp50

If not, you must create pseudo terminals. To do this, use the scoadmin program as follows.

1. Launch scoadmin.

# scoadmin

2. Select [Hardware/Kernel Manager].

3. Select [Tune Parameters...].

4. Enter 9 to select [TTY and console configuration].