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DES-3200-10/18/28/28F Layer 2 Ethernet Managed Switch User Manual
Parameter Description
From Port/To
Port
Use the pull-down menus to select the port or range of ports to be configured.
State
Toggle this field to either enable or disable a given port or group of ports.
Speed/Duplex
Toggle the Speed/Duplex field to either select the speed and duplex/half-duplex state of the port.
Auto denotes auto-negotiation between 10 and 100 Mbps devices, in 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 Auto, 10M Half,
10M Full, 100M Half and 100M Full, 1000M Full_Master, 1000M Full_Slave and 1000M Full.
There is no automatic adjustment of port settings with any option other than Auto.
The Switch allows the user to configure two types of gigabit connections; 1000M/Full_M and
1000M/Full_S. Gigabit connections only support full duplex connections and take on certain
characteristics that are different from the other choices listed.
The 1000M Full_Master and 1000M Full_Slave parameters refer to connections running a
1000BASE-T cable for connection between the Switch port and other device capable of a gigabit
connection. The master setting (1000M Full_Master) will allow the port to advertise capabilities
related to duplex, speed and physical layer type. The master setting will also determine the
master and slave relationship between the two connected physical layers. This relationship is
necessary for establishing the timing control between the two physical layers. The timing control
is set on a master physical layer by a local source. The slave setting (1000M Full_Slave) uses
loop timing, where the timing comes from a data stream received from the master. If one
connection is set for 1000M Full_Master, the other side of the connection must be set for 1000M
Full_Slave. Any other configuration will result in a link down status for both ports.
Flow Control
Displays the flow control scheme used for the various port configurations. Ports configured for
full-duplex use 802.3x flow control, half-duplex ports use backpressure flow control, and Auto
ports use an automatic selection of the two. The default is Disabled.
Address
Learning
When Enabled, destination and source MAC addresses are automatically listed in the forwarding
table. The default setting is Enabled.
Medium Type
This applies only to the Combo ports. If configuring the Combo ports this defines the type of
transport medium used. SFP ports should be set at Fiber and the Combo 1000BASE-T ports
should be set at Copper.
MDIX
This can be specified as Auto, Normal, or Cross. In Normal state, the port is in MDIX mode and
can be connected to a PC NIC using a straight cable. If it is in Cross state, the port is in MDI
mode, and can be connected to a port (in MDIX mode) on another switch through a straight
cable.
Click Apply to implement the new settings on the Switch.
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