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DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
204 Web-Based Switch Management
Use the State<Enabled> pull-down menu to either enable or
disable a given port.
Use the Speed/Duplex<Auto> pull-down menu to either select
the speed and duplex/half-duplex state of the port. Auto –
auto-negotiation between 10 and 100 Mbps devices, full- or
half-duplex. The Auto setting allows the port to automatically
determine the fastest settings the device the port is connected
to can handle, and then to use those settings. The other
options are 100M/Full, 100M/Half, 10M/Full, and 10M/Half.
There is no automatic adjustment of port settings with any
option other than Auto.
Locking a Port’s MAC Address Learning
A given port’s (or a range of port’s) dynamic MAC address
learning can be locked such that the current source MAC
addresses entered into the MAC address forwarding table can
not be changed once the port lock is enabled. The port can be
locked by using the Learn <Disabled> pull-down menu to
Enabled, and clicking Apply.
This is a security feature that prevents unauthorized
computers (with source MAC addresses unknown to the switch
prior to locking the port (or ports) from connecting to the
switch’s locked ports and gaining access to the network.
The following fields can be set:
Parameter Description
State <Enabled> Toggle the State <Enabled> field to
either enable or disable a given port.
Speed/Duplex
<Auto>
Toggle the Speed/Duplex <Auto> field
to either select the speed and
duplex/half-duplex state of the port.
Auto – auto-negotiation between 10