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]
You cannot access the Switch through the console port.
If you are experiencing difficulties in accessing the switch via the
console port, check that:
You are using a null modem cable as described in the Getting
Started Guide that accompanies your Switch.
The port settings on the terminal emulator (such as
HyperTerminal) are set as follows:
baud rate 19200
8 data bits
no parity
1 stop bit
No Flow Control
VT100 Emulation
The correct COM port has been selected.
You have configured your Switch with IP information.
The terminal or terminal emulator cannot access the Switch.
Ensure that, if you are managing the Switch over the network:
Remote access to the management software of the Switch is
enabled.
The port through which you are trying to manage the Switch
belongs to the Default VLAN (VLAN 1). This is the default VLAN
that can be used to access the management software of the
Switch.
Trusted IP Host is not configured to restrict the IP addresses
trying to access the unit.
If the User Name and Password login prompt still does not display,
reset the Switch.
The terminal or terminal emulator can no longer access the
Switch over the network.
Ensure that:
Remote access to the management software of the Switch is
enabled.
The port through which you are trying to access the Switch has
not been disabled. If it is enabled, check the connections and
network cabling for the port.
The port through which you are trying to manage the Switch
belongs to the Default VLAN (VLAN 1). This is the only VLAN that
can be used to access the management software of the Switch.