P-871H Series User’s Guide
40
Chapter 5 Basic Setting
5.7 Port Setup
Click
Basic Setting
and then
Port Setup
in the navigation panel to enter the port
configuration screen.
Figure 15
Port Setup
The following table describes the labels in this screen.
Table 12
Port Setup
LABEL
DESCRIPTION
Port
This is the port index number.
Index numbers 1 to 4 refer to the Ethernet ports.
VDSL
refers to the VDSL port.
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.
Type
This field displays
10/100M
for all port connection.
Speed / Duplex Select the speed and the duplex mode of the Ethernet connection on this port.
Select
Auto
,
10M/Half Duplex
,
10M/Full Duplex
,
100M/Half Duplex
or
100M/Full
Duplex
.
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 Prestige 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 Prestige determines the
connection speed by detecting the signal on the cable and using half duplex mode.
When the Prestige’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 Prestige 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.
802.1p Priority This priority value is added to incoming frames without a (802.1p) priority queue tag.
See
Priority Queue Assignment
in
for more information.
Summary of Contents for P-871H Series
Page 1: ...P 871H Series VDSL Modem with 4 port Switch User s Guide Version 3 50 7 2005...
Page 15: ...P 871H Series User s Guide 14 List of Tables...
Page 23: ...P 871H Series User s Guide 22 Chapter 2 Hardware Overview...
Page 35: ...P 871H Series User s Guide 34 Chapter 4 System Status and Port Statistics...
Page 43: ...P 871H Series User s Guide 42 Chapter 5 Basic Setting...
Page 71: ...P 871H Series User s Guide 70 Chapter 11 Command Examples...
Page 95: ...P 871H Series User s Guide 94 IP Subnetting...
