3Com MSR 50 Series Configuration Manual page 810

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HAPTER ERMINAL
A FAQ
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5 Under the [Configuration tunables] title, Select [12 Streams] to enter the level 4
interface.
6 Set the [NSTRPAGES] field to 2000 (the default is 500).
7 Exit to the level 2 interface and select [Relink Kernel] to recompile the kernel.
8 Exit scoadmin and reboot the Unix server.
After reboot, the change takes effect. You can use the netstat -m command to
view current system stream resources. The last but three line of command output
will show that the total configured streams memory is changed from 2,048 KB to
8,000 KB.
Some banking services cannot use pseudo terminal names containing
more than six characters
By default, the name of a pseudo terminal consists of six characters, for example,
ttyp50. But some banking services do not support pseudo terminal names
containing six or more characters. Therefore, you must modify the names to
5-character long names. The following example shows the steps:
1 Kill all the current main and child ttyd processes.
2 Modify pseudo terminal names in configuration file ttyd.conf, for example:
Original: ttyp30 10.110.96.11 0
Modified: ttya0 10.110.96.11 0
3 Modify 6-character pseudo terminal names to 5-character ones with the following
commands:
# mv /dev/ttyp30 /dev/ttya0
# mv /dev/ptyp30 /dev/ptya0
4 Modify attributes of the pseudo terminals with the following commands:
# chmod 666 /dev/ttya0
# chmod 666 /dev/ptya0
5 Synchronize with the following command:
# sync
6 For active terminals, add corresponding pseudo terminal configuration in system
file inittab by using the following command:
a0:234:respawn:/etc/getty ttya0 m
7 Add configuration entry for pseudo terminal ttya0 in the banking service
configuration file.
8 Restart the ttyd program.
Thus, 6-character VTY names are changed to 5-character ones.
A terminal does not display the login interface
A terminal does not display the login interface in the following cases:
Sometimes, when you kill the main ttyd process, some banking service process
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may remain. In this case, when you restart ttyd, the terminal cannot be
opened.