Allied Telesis AT-MMC6005, Руководство по установке

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AT-MMC6000 Series Installation Guide
27
Half- and Full-duplex Mode
Duplex mode refers to the way an end-node sends and receives data on
the network. An end-node can operate in either half- or full-duplex mode,
depending on its capabilities. An end-node that is operating in half-duplex
mode can either send data or receive data, but it cannot do both at the
same time. An end-node that is operating in full-duplex mode can send
and receive data simultaneously. The best network performance is
achieved when an end-node can operate at full-duplex, because the end-
node is able to send and receive data simultaneously.
The AT-MMC6000 Series Media Converter can operate in either half- or
full-duplex mode. It can operates using Auto-Negotiation to select the
duplex mode and does not support forced duplex mode. It is important to
remember that the end-node connected to the ports on the media
converters must be configured to operate with Auto-Negotiation too.
Status LEDs
The AT-MMC6000 Series media converters feature the status LEDs
defined in Table 5.
Table 5. Status LEDs
LED State Description
SYS Solid Green
(with
Heartbeat) The media converter is receiving
power.
Note: The SYS LED will flicker briefly at
a regular interval. This “heartbeat”
indicates that the internal system is
running normally.
Off The media converter is not receiving
power or an error is present within the
media converter.