D-Link DES-3010F Manual page 42

Flow Control
Click Apply to implement the new settings on the Switch.
DES-3010F/G / DES-3018 / DES-3026 Fast Ethernet Switch Manual
1000M/Full, 1000M/Full_M and 1000M/Full_S. Gigabit connections are only
supported in full duplex connections and take on certain characteristics that are
different from the other choices listed.
The 1000M/Full_M (master) and 1000M/Full_S (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_M) 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_S) uses loop timing, where the timing
comes form a data stream received from the master. If one connection is set for
1000M/Full_M, the other side of the connection must be set for 1000M/Full_S.
Any other configuration will result in a link down status for both ports.
Fiber optic ports are statically set and unchangeable at 1000Mbps in Full-Duplex.
The user may configure these ports to be Auto or 1000M/Full.
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.
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