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50 Rockwell Automation Publication 1783-UM007I-EN-P - December 2017
Chapter 2 Get Started
Table 16 - Port Settings
Field Description
Port Name The number of the switch port, including port type, such as Fa for Fast Ethernet and Gi for Gigabit Ethernet, and the specific port number:
• Gi/1 is the gigabit port 1 of the switch.
• Fa1/1 is Fast Ethernet port 1 on the switch.
Description The description of the switch port.
We recommend that you provide a port description to help identify the port during monitoring and troubleshooting. The description can be the
location of the connected device or the name of the person using the connected device.
Port Status (Appears only on the Edit Physical Port page; not editable). Indicates whether a device is connected to the port:
• Green = Connected
• Gray = Not connected
Speed The operating speed of the switch port. If the connected device can negotiate the link speed with the switch port, choose Auto (autonegotiation).
We recommend that you use Auto speed so that the speed of the switch port automatically matches the speed of the connected device. If the
connected device requires a specific speed, change the speed of the switch port.
Default: Auto
Duplex The duplex mode of the switch port:
• Auto—(Autonegotiation). The connected device can negotiate the duplex mode with the switch. In the Physical Port table, the negotiated setting
is Auto-Full or Auto-Half. If the port is not connected or has not completed negotiation, the status is Auto.
• Half— (Half-duplex mode). The connected device must alternate sending or receiving data.
• Full— (Full-duplex mode). Both devices can send data at the same time.
On Gigabit Ethernet ports, you cannot set the port to Half-duplex mode if the port speed is set to Auto.
We recommend that you use Auto mode so that the mode on the switch port automatically matches the mode of the connected device. If the
connected device requires a specific duplex mode, change the mode of the switch port.
Default: Auto
Auto MDIX (Appears only on the Edit Physical Port page). When enabled, this feature detects the interface cable (straight-through or crossover) and configures
the port pinouts, speed, and duplex mode to correctly communicate with the connected device. This setting is not available on SFP module ports.
Default: Enabled
Media Type (Applies to dual-purpose uplink ports). The active port type (either the RJ45 port or the SFP module port) of a dual-purpose uplink port.
By default, the switch detects whether the RJ45 port or SFP module port of a dual-purpose port is connected and uses the port accordingly. Only one
port can be active at a time. If both ports are connected, the SFP module port has priority. You cannot change the priority setting.
Choose from the following media types:
• SFP—Only the SFP module port of a dual port is active. You can set the speed and duplex settings. Auto-MDIX is not available. For Gigabit Ethernet
SFP ports, you can set the speed and duplex to Auto, or you can set the speed to 1000Mb/s, which configures the port to not negotiate if connected
to a device that does not support autonegotiation.
• RJ45—Only the RJ45 port of a dual port is active. You can enter the settings for port speed and duplex or choose Auto MDIX.
• Auto—(Autonegotiation). The switch detects whether the RJ45 port or the SFP module port is connected and uses the port accordingly. Only one
port can be active at a time. If both ports are connected to the network, the SFP module port has priority. The speed and duplex are set to Auto.
Default: Auto
Operational Mode (Appears only in the Physical Port table; not editable). The operational state of the port. Displays the administrative mode or Down if disabled.
VLAN-0 (Appears only on the Edit Physical Port page). Enables the system to handle 802.1Q Ethernet frames with VLAN ID 0. These are called priority tagged
frames. The purpose of priority tagged frames is to give priority to the frames with no significance to the VLAN ID. For example, PROFINET messaging
requires priority tagged frames to pass CIP messages through the switch. For more information about VLAN 0 priority tagging, see
page 280 .
Default: Enabled