Version 6 SuperStack 3 Switch 4400 Management Interface Reference Guide

Support - Problem Solving - Command Line Interface Problems
http://support.3com.com/infodeli/tools/switches/4400/DHA1720-3AAA08/htm/support/problemsolving/cliproblems.htm[11/15/2010 3:43:53 PM]
If there is still a problem, try accessing the stack through a different
port. If you can now access the Switch, a problem may have occurred
with the original port. Contact your supplier for further advice.
You cannot access the command line interface using Telnet or
Hyperterminal.
Accessing the Command Line Interface via Telnet or Windows
HyperTerminal using TCP/IP may not work correctly on some platforms
unless the application has been configured to send line feeds with
carriage returns.
To set this for Telnet enter set CRLF when in command mode.
To set this for HyperTerminal click on the Settings tab in the
Properties screen, click ASCII Setup and ensure that Send line
ends with line feeds is checked within the ASCII Sending section.
If this does not solve the problem try an alternative Telnet application
to ensure it is not a limitation of your Telnet application.
You should not configure HyperTerminal in the above way if you are
using a console cable to make a direct connection to the Switch.
The command line interface responds slowly to commands.
This is probably due to large amounts of traffic on the network. Logout
and then login to the command line interface.
It is also possible to have very-slow response times if the switch is
still initialising its SSH host key data. This can take several minutes
after a unit has been reset to factory defaults.
You forget the password for the "admin" user account and can no
longer perform important management operations.
Use the password recovery method outlined below to define a new
password for the "admin" user account:
1. Access the Command Line Interface through the console port and
enter the user name "recover" and password "recover" to place
the Switch in password recovery mode. The Switch remains in
password recovery mode for a maximum of 30 seconds, before it
returns to the CLI login prompt.
2. Perform a hard reset on the Switch whilst it is in password
recovery mode by switching it off, waiting a few seconds, and
switching it on again.
If the Switch has a Redundant Power Supply (RPS) connected,
you will need to disconnect it in order to perform a hard reset.
You cannot use a soft reset operation to reset the password
of the "admin" user account. This will end the password recovery
procedure and return you to the CLI login prompt.
3. When the Switch has rebooted following the hard reset enter a
new password for the "admin" user account.