Chapter 8 Basic Setting
Table 12 Basic Setting > Port Setup (continued)
LABEL | DESCRIPTION |
Speed/ | Select the speed and the duplex mode of the Ethernet connection on this |
Duplex | port. Choices are Auto, 10M/Half Duplex, 10M/Full Duplex, 100M/ |
| Half Duplex, 100M/Full Duplex and 1000M/Full Duplex. |
| Selecting Auto |
| port automatically to obtain the connection speed and duplex mode that |
| both ends support. When |
| Switch negotiates with the peer automatically to determine the connection |
| speed and duplex mode. If the peer port does not support |
| or turns off this feature, the Switch determines the connection speed by |
| detecting the signal on the cable and using half duplex mode. When the |
| Switch’s |
| speed and duplex mode when making a connection, thus requiring you to |
| make sure that the settings of the peer port are the same in order to |
| connect. |
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Flow Control | A concentration of traffic on a port decreases port bandwidth and overflows |
| buffer memory causing packet discards and frame losses. Flow Control is |
| used to regulate transmission of signals to match the bandwidth of the |
| receiving port. |
| The Switch uses IEEE802.3x flow control in full duplex mode and |
| backpressure flow control in half duplex mode. |
| IEEE802.3x flow control is used in full duplex mode to send a pause signal |
| to the sending port, causing it to temporarily stop sending signals when |
| the receiving port memory buffers fill. |
| Back Pressure flow control is typically used in half duplex mode to send a |
| "collision" signal to the sending port (mimicking a state of packet collision) |
| causing the sending port to temporarily stop sending signals and resend |
| later. Select Flow Control to enable it. |
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802.1p | This priority value is added to incoming frames without a (802.1p) priority |
Priority | queue tag. See Priority Queue Assignment in Table 10 on page 85 for |
| more information. |
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BPDU | Configure the way to treat BPDUs received on this port. You must activate |
Control | bridging control protocol transparency in the Switch Setup screen first. |
| Select Peer to process any BPDU (Bridge Protocol Data Units) received on |
| this port. |
| Select Tunnel to forward BPDUs received on this port. |
| Select Discard to drop any BPDU received on this port. |
| Select Network to process a BPDU with no VLAN tag and forward a tagged |
| BPDU. |
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Apply | Click Apply to save your changes to the Switch’s |
| Switch loses these changes if it is turned off or loses power, so use the |
| Save link on the top navigation panel to save your changes to the non- |
| volatile memory when you are done configuring. |
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Cancel | Click Cancel to begin configuring this screen afresh. |
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