Port Description Settings - D-Link DES-3528 - xStack Switch - Stackable Reference Manual

xStack® DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch Web UI Reference Guide
Flow Control
Address Learning
MDIX
Medium Type
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Port Description Settings

The Switch supports a port description feature where the user may name various ports.
To view the following window, click System Configuration > Port Configuration > Port Description Settings, as
shown below:
port. Auto denotes auto-negotiation among 10, 100 and 1000 Mbps devices, in full- or half-
duplex (except 1000 Mbps which is always full 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 10M Half, 10M Full, 100M Half, 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 three types of gigabit connections; 1000M
Full_Master, 1000M Full_Slave, and 1000M Full. 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.
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.
Enable or disable MAC address learning for the selected ports. When Enabled, destination
and source MAC addresses are automatically listed in the forwarding table. When address
learning is Disabled, MAC addresses must be manually entered into the forwarding table.
This is sometimes done for reasons of security or efficiency. See the section on
Forwarding/Filtering for information on entering MAC addresses into the forwarding table.
The default setting is Enabled.
Auto - Select auto for auto sensing of the optimal type of cabling.
Normal - Select normal for normal cabling. If set to normal state, the port is in MDI mode
and can be connected to a PC NIC using a straight-through cable or a port (in MDI mode)
on another switch through a cross-over cable.
Cross - Select cross for cross cabling. If set to cross state, the port is in MDIX mode, and
can be connected to a port (in MDI mode) on another switch through a straight cable.
If configuring the Combo ports, this defines the type of transport medium to be used.
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