Solving Serial Web Utility Problems 219
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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.
Traps are not received by the SNMP Network Management 
software. 
Check that the IP information of the SNMP Network 
Management software is correctly recorded by the Switch.
The SNMP Network Management software can no longer access 
the Switch.
 Check that:
■
Remote access to the management software of the Switch has not 
been disabled. For more information, see “Enabling and Disabling 
Remote Access” on page 150.
■
The port through which you are trying to access the Switch has not 
been disabled. For more information, see “Displaying the Status of the 
Ports” on page 54, or if it is enabled, check the connections and 
network cabling for the port.
■
The port through which you are trying to manage the Switch has not 
been moved from the Default VLAN (VLAN 1). This is the only VLAN 
that can be used to access the management software of the Switch.
If there is still a problem, try accessing the Switch 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.
Solving Serial Web 
Utility Problems
You cannot connect to the web interface of the Switch.
Check that:
■
The Switch is powered-up.
■
You are using a proper null modem cable. Pin-outs are detailed in the 
User Guide of your Switch.
■
The flow control and line speed (baud rate) settings are the same on 
the Switch and on the management workstation:
■
You have not changed the line speed setting of the management 
workstation after the Switch has connected (the Switch only 
configures its line speed the first time it connects).
■
You have selected the correct serial port on your management 
workstation.