D-Link DGS-1250 Series Reference Manual page 24

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
Parameter
Flow Control
Duplex
Speed
Capability Advertised
Description
Click the Apply button to accept the changes made.
Description
• Cross - Select this option for crossover cabling. If this option is selected, the
port is in the MDI mode and can be connected to a port (in the MDIX mode)
on another Switch through a straight cable.
Note: This option is only available on the 10/100/1000 Mbps RJ45 ports.
Select to turn flow control On or Off here. Ports configured for full-duplex use
802.3x flow control and Auto ports use an automatic selection of the two.
Select the duplex mode used here. Options to choose from are Auto, Half, and
Full.
Select the port speed option here. This option will manually force the connection
speed on the selected port to connect at the specified speed only.
The Master setting 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 uses loop timing, where the timing comes from a data stream
received from the master. If one connection is set for master, the other side of the
connection must be set for slave. Any other configuration will result in a 'link down'
status for both ports.
Options to choose from are:
• Auto - Specifies that for copper ports, auto-negotiation will start to negotiate
the speed and flow control with its link partner. For fiber ports, auto-
negotiation will start to negotiate the clock and flow control with its link
partner.
• 10M - Specifies to force the port speed to 10 Mbps.
• 100M - Specifies to force the port speed to 100 Mbps.
• 1000M - Specifies to force the port speed to 1 Gbps.
• 1000M Master - Specifies to force the port speed to 1 Gbps and operates as
the master, to facilitate the timing of transmit and receive operations.
• 1000M Slave - Specifies to force the port speed to 1 Gbps and operates as
the slave, to facilitate the timing of transmit and receive operations.
• 10G - Specifies to force the port speed to 10 Gbps.
When the Speed is set to Auto, these capabilities are advertised during auto-
negotiation.
Select the checkbox and enter the description for the corresponding port here.
This can be up to 64 characters long.
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