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| Table 12 Port Setup (continued) | |
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| LABEL | DESCRIPTION |
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| Flow Control | A concentration of traffic on a port decreases port bandwidth and overflows buffer |
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| memory causing packet discards and frame losses. Flow Control is used to regulate |
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| transmission of signals to match the bandwidth of the receiving port. |
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| The switch uses IEEE802.3x flow control in full duplex mode and |
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| control in half duplex mode. |
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| IEEE802.3x flow control is used in full duplex mode to send a pause signal to the |
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| sending port, causing it to temporarily stop sending signals when the receiving port |
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| memory buffers fill. |
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| Back Pressure flow control is typically used in half duplex mode to send a "collision" |
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| signal to the sending port (mimicking a state of packet collision) causing the sending |
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| port to temporarily stop sending signals and resend later. Select Flow Control to |
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| enable it. |
| 802.1P Priority | This priority value is added to incoming frames without a (802.1p) priority queue tag. |
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| See Priority Queue Assignment in Table 10 on page 67 for more information. |
| PD | This field is only available on the |
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| |
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| A powered device (PD) is a device such as an access point or a switch, that supports |
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| PoE (Power over Ethernet) so that it can receive power from another device through a |
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| 10/100Mbps Ethernet port. |
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| Select the check box to allow a powered device (connected to the port) to receive |
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| power from the switch. |
| Apply | Click Apply to save the settings. |
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| Cancel | Click Cancel to reset the fields to your previous configuration. |
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Chapter 7 Basic Setting | 71 |