Switch Features Explained 15
Broadcast Storm
Control
Broadcast Storm Control is a system that monitors the level of broadcast
traffic on that port.
If the broadcast traffic level rises to a pre-defined
number of frames per
second (threshold), the broadcast traffic on the port
is blocked until the broadcast
traffic level drops below the threshold. This
system prevents the overwhelming broadcast traffic that can result from
network equipment which is faulty or configured incorrectly.
VLANs A Virtual LAN (VLAN) is a flexible group of devices that can be located
anywhere in a network, but which communicate as if they are on the
same physical segment. With VLANs, you can segment your network
without being restricted by physical connections — a limitation of
traditional network design. As an example, with VLANs you can segment
your network according to:
■ Departmental groups
■ Hierarchical groups
■ Usage groups
For more information about VLANs, see Chapter 8 “Setting Up Virtual
LANs”.
Configuration Save
and Restore
The Configuration Save and Restore feature allows the configuration of
your Switch to be saved as a file on a remote server, or to be restored
onto the Switch from a remote file. The configuration information is
stored in an readable ASCII text file.
All configuration information that can be set using the Switch’s
Command Line Interface is saved and restored.
You must have security management access level to be able to save and
restore the Switch configuration.
The password is stored in the backup file. If you want to restore the file
but don’t have the password you can delete the password from the file.
Important Considerations
■ 3Com recommends the Switch unit is reset to its factory default
settings before you restore a configuration onto it. You can reset the
Switch using the
system control initialize CLI command or the
System > Control > Initialize Web interface operation.
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