3Com MSR 50 Series Configuration Manual page 803

Check whether the main ttyd process and its child processes are present
Use the process management function provided by the ttyd administration
program or the ps -ef | grep ttyd command to check whether the main ttyd
process and its child processes are present.
1 The ttyd main process does not exist.
The ttyd program is not running. Run the program as follows:
# /etc/ttyd
If you do not specify any parameters for the command, the default configuration
file /etc/ttyd.conf is used. To specify another configuration file, you must enter a
file name in the following format:
# /etc/ttyd /etc/ttyd9020.conf
2 The main ttyd process exits but none of its child processes does.
3 The ttyd program has been started, but no TCP connection has been established
between the router and the Unix server. First, verify that the connection modes set
on the router and the FEP are the same, for example, both in the one-to-one
mode. Then, check whether it is because the terminal authentication failed or
opening the pseudo terminal failed. Refer to the
router and the ttyd configuration of the server are correct and consistent." on
page 803 or "Prompts on Terminals" on page
child processes exist.
The ttyd program has been started, and a TCP connection has been established
between the router and the Unix server. Refer to
established a TCP connection with the Unix server" on page
Verify the configuration of the router and the ttyd configuration of the
server are correct and consistent.
Verify router configuration is correct.
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Verify the configuration file ttyd.conf on the Unix server is correct.
■
Verify either the one-to-one or many-to-one mode is configured on both sides.
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Verify the port numbers configured on both sides are consistent.
■
Verify the IP address and terminal number configured in ttyd.conf and those on
■
the router are consistent.
If source IP address binding is configured on the router, verify the source IP
■
address can be pinged through from the Unix server
Check whether the router has established a TCP connection with the Unix
server
1 Verify TCP connectivity using the terminal connectivity test hotkey
In terminal access, a command is provided for testing terminal connectivity. This
command can be used to verify the TCP connectivity between a terminal and a
Unix server. Once the terminal connectivity test hotkey is configured on the
interface, the terminal connectivity test function is enabled.
Terminal Access Troubleshooting
"Verify the configuration of the
799. The main ttyd process and its
"Check whether the router has
803.
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