ZyXEL ENC User Guide - Page 217

Table 100, LABEL, DESCRIPTION, Port Management > Basic Setting continued

Page 217 highlights

Chapter 8 Application Table 100 Port Management > Basic Setting (continued) LABEL DESCRIPTION Copy Click this to copy the selected port's settings to another port. The screen appears as shown next. Figure 166 Copy Port Active Speed/Duplex Specify the port number to which you want to copy the selected port's settings. You can use a hyphen and/or comma (,) to specify multiple ports. For example, 1,3-5,7 means ports 1, 3, 4, 5 and 7. Click OK to apply the changes to the Port Management > Basic Setting screen.. Otherwise, click Cancel to discard the change and close this screen. This is the port index number. Select this check box to enable a port. The factory default for all ports is enabled. A port must be enabled for data transmission to occur. Select the speed and the duplex mode of the Ethernet connection on this port. The choices are Auto, 10M/Half Duplex, 10M/Full Duplex, 100M/Half Duplex and 100M/Full Duplex for a 1000Base-T connection. 1000M/Full Duplex is supported by both 1000BaseT and 1000Base-X connections. 10G/Full Duplex is supported by the 10 Gigabit Ethernet connections. Flow Control Selecting Auto (auto-negotiation) allows one port to negotiate with a peer port automatically to obtain the connection speed and duplex mode that both ends support. When auto-negotiation is turned on, a port on the device negotiates with the peer automatically to determine the connection speed and duplex mode. If the peer port does not support auto-negotiation or turns off this feature, the device determines the connection speed by detecting the signal on the cable and using half duplex mode. When the device's auto-negotiation is turned off, a port uses the pre-configured 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. 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 device uses IEEE 802.3x flow control in full duplex mode and Back Pressure flow control in half duplex mode. IEEE 802.3x 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. 802.1p Priority BPDU Control 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. This priority value is added to incoming frames without a (802.1p) priority queue tag. Configure the way to treat BPDUs received on this port. You must activate 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. ENC User's Guide 217

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Chapter 8 Application
ENC User’s Guide
217
Copy
Click this to copy the selected port’s settings to another port. The screen appears as shown
next.
Figure 166
Copy
Specify the port number to which you want to copy the selected port’s settings. You can use
a hyphen and/or comma (,) to specify multiple ports. For example, 1,3-5,7 means ports 1,
3, 4, 5 and 7. Click
OK
to apply the changes to the
Port Management
>
Basic Setting
screen.. Otherwise, click
Cancel
to discard the change and close this screen.
Port
This is the port index number.
Active
Select this check box to enable a port. The factory default for all ports is enabled. A port
must be enabled for data transmission to occur.
Speed/Duplex
Select the speed and the duplex mode of the Ethernet connection on this port. The choices
are
Auto
,
10M/Half Duplex
,
10M/Full Duplex
,
100M/Half Duplex
and
100M/Full
Duplex
for a 1000Base-T connection.
1000M/Full Duplex
is supported by both 1000Base-
T and 1000Base-X connections.
10G/Full Duplex
is supported by the 10 Gigabit Ethernet
connections.
Selecting
Auto
(auto-negotiation) allows one port to negotiate with a peer port
automatically to obtain the connection speed and duplex mode that both ends support.
When auto-negotiation is turned on, a port on the device negotiates with the peer
automatically to determine the connection speed and duplex mode. If the peer port does
not support auto-negotiation or turns off this feature, the device determines the connection
speed by detecting the signal on the cable and using half duplex mode. When the device’s
auto-negotiation is turned off, a port uses the pre-configured 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.
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 device uses IEEE 802.3x flow control in full duplex mode and Back Pressure flow control
in half duplex mode.
IEEE 802.3x 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.
802.1p Priority
This priority value is added to incoming frames without a (802.1p) priority queue tag.
BPDU Control
Configure the way to treat BPDUs received on this port. You must activate 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.
Table 100
Port Management > Basic Setting (continued)
LABEL
DESCRIPTION