Allied Telesis AT FS708LE AT-FS708LE AT-FS708LE, Руководство по установке

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Power Supply
The AT-FS708LE Ethernet Switch uses an
external power adapter that comes standard
with the unit.
Store and Forward
The AT-FS708LE switch uses store and
forward as the method for receiving and
transmitting frames. When an Ethernet frame
is received on a switch port, the switch does not
retransmit the frame out the destination port
until it has received the entire frame and stored
the frame in a port buffer. It then examines the
frame to determine if it is a valid frame. Invalid
frames, such as fragments or runts, are
discarded by the switch. This insures that only
valid frames are transmitted out the switch
ports and that damaged frames are not
propagated on your network.
Back Pressure and Flow Control
In order to maintain the orderly movement of
data between the end-nodes, an Ethernet
switch may periodically need to signal an end-
node to stop sending data. This can occur under
several circumstances. For example, if two end-
nodes are operating at different speeds, the
switch, while transferring data between the
end-nodes, might need to instruct the faster