D-Link DMS-3130 User Manual - Page 21

DMS-3130 Series Multi-Gigabit L3 Stackable Managed Switch Web UI Reference Guide Parameter Medium Type State MDIX Auto Downgrade Flow Control Duplex Speed Description Select the port medium type here. Options to choose from are RJ45 and SFP. Note: Selecting the SFP option, which includes the use of SFP28 or optional SFP+ transceivers for 10G/25G connectivity. Select this option to enable or disable the physical port here. Select the Medium Dependent Interface Crossover (MDIX) option here. Options to choose from are: • Auto - Select this option for auto-sensing of the optimal type of cabling. • Normal - Select this option for normal cabling. If this option is selected, the port is in the MDIX mode and can be connected to a PC NIC using a straight-through cable or a port (in the MDI mode) on another Switch through a cross-over cable. • Cross - Select this option for cross-over 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. Select to enable or disable the feature to automatically downgrade the advertised speed in the event that a link cannot be established at an available speed. Select to either 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. Note: This feature will not work through Switches that are physically stacked. Select the duplex mode used here. Options to choose from are Auto, Half and Full. Note: Fiber optic ports support only full-duplex mode. Select the port speed option here. This option will manually force the connection speed on the selected port to only connect at the speed specified here. Options to choose from are Auto, 100M, 1000M, 1000M Master, 1000M Slave, 2500M, 2500M Master, 2500M Slave, 5G, 5G Master, 5G Slave, 10G, 10G Master, 10G Slave, and 25G. 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. • Auto - Specifies that for copper ports, auto-negotiation will start to negotiate the speed and flow control with its link partner. For fiber optic ports, auto-negotiation is not supported. • 100M - Specifies to force the port speed to 100 Mbps. • 1000M - Specifies to force the port speed to 1Gbps. • 1000M Master - Specifies to force the port speed to 1Gbps and operates as the master, to facilitate the timing of transmit and receive operations. • 1000M Slave - Specifies to force the port speed to 1Gbps and operates as the slave, to facilitate the timing of transmit and receive operations. • 2500M - Specifies to force the port speed to 2.5 Gbps. • 2500M Master - Specifies to force the port speed to 2.5 Gbps and operates as the master, to facilitate the timing of transmit and receive operations. 10