Negotiation: All copper ports and gigabit fiber ports in the managed switch are capable
of auto-negotiation such that the fastest bandwidth is selected. Choose to enable auto-
negotiation or use fixed settings. 100Mbps fiber ports are fixed speed only.
Speed/Duplex/Flow Control: Each port can be set to allow speed and duplex to be
negotiated to any or all Speed/Duplex/Flow control options. Network performance can be
optimized by using Fixed Negotiation and restricting Speed/Duplex/Flow Control to a single
value if network traffic is known.
These options are available:
• 10h – 10 Mbps, Half Duplex
• 10f – 10 Mbps, Full Duplex
• 100h – 100 Mbps, Half Duplex
• 100f – 100 Mbps, Full Duplex
• 1000f – 1000 Mbps, Full Duplex
On managed switches with gigabit combination ports, those ports will have two rows,
a standard row of check boxes and a row labeled “SFP” with radio buttons. The SFP
setting independently sets the speed at which a transceiver will operate if one is plugged in.
Otherwise, the switch will use the fixed Ethernet port and the corresponding settings for it.
Flow Control: Flow control can also be enabled or disabled, and is indicated by ‘FC’ when
enabled. Devices use flow control to ensure that the receiving devices takes in all the data
without error. If the transmitting device sends at a faster rate than the receiving device,
then the receiving device will eventually have its buffer full. No further information can be
taken when the buffer is full, so a flow control signal is sent to the transmitting device to
temporarily stop the flow of incoming data.
NOTE: The SFP settings are NOT automatically sensed or negioated. If a 100 Mbps SFP is installed in the switch, that
port must be manually set on the port settings page to 100 Mbps.
4-7
Chapter 4 - Managed Switch Software Setup
Stride Industrial Ethernet Switches User Manual 2nd Ed. Rev. A
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