3Com MSR 50 Series Configuration Manual page 812

812 C 54: T
HAPTER ERMINAL
A FAQ
CCESS
If other configurations are all correct but the log shows that some pseudo
terminals cannot be opened, check whether the terminals are under directory /dev.
If not, try to use another existent pseudo terminal or create the pseudo terminal. If
yes, check whether a process is using the pseudo terminal.
The status of a terminal is not OK but UP on the router
If a terminal is correctly connected to the router, its status should be OK when you
use the display rta command. If its status is UP, terminal access is not started, and
you must use the rta server enable command in system view on the router to
enable terminal access.
The TCP connection is intermittently up/establishing and down
Verify that the same application mode (many-to-one or one-to-one) is
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configured on both the router and the Unix server.
Verify that the router and Unix server are configured consistently and that the
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configurations comply with the parameter configuration conventions. Most
mistakes result from inconsistent configurations.
Check whether source address binding is configured. With source address
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binding configured, the router IP address configured on the Unix server must
be the bound IP address.
Verify that correct routes are configured on both the router and Unix server.
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Illegible characters are displayed when a terminal handles a service
Check whether test, redrawing, switching hotkeys and the like are configured.
Hotkey values may conflict with data. You can change the hotkey values.
Check whether the application mode is many-to-one, which may cause data for
terminals to fall into confusion. Upgrade to a router version supporting
one-to-one mode and switch to one-to-one application mode.
Pressing menu switching hotkey cannot bring up the menu
When a terminal is listing directories or outputting data, pressing the menu
switching hotkey cannot bring up the menu. Perform VTY switching when the
terminal is idle.
With terminal access enabled, a powered terminal is still down
Check whether the asynchronous interface is configured with the undo
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modem command.
Verify that the terminal cable is OK.
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Verify that the converter connecting the terminal and the router is wired
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correctly.
Only the first configuration file has a corresponding process when
multiple configuration files are configured
Check whether the listening ports configured in the configuration files are in
conflict.