D-Link DFE-904, Руководство пользователя

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Ethernet and Fast Ethernet. If collisions become very frequent, the cause might
be faulty cabling, network overload, or a malfunctioning device.
Important: If too many consecutive transmissions from a device result in
collisions, the hub will partition the port the device is
connected to — that is, it will block transmissions coming in
on that port. When a port is partitioned, its Link/Rx indicator
does not light up.
The hub will automatically departition the port when it
detects that the connected device is operating correctly.
Partitioning prevents a malfunctioning device from
disrupting the network. Automatic partitioning and
departitioning are required features of Ethernet and Fast
Ethernet hubs.
The term collision domain is often used to describe an Ethernet or Fast Ethernet
network. A collision domain is a collection of end nodes whose signals can
collide. End nodes connected to the same hub or to uplinked hubs are in the
same collision domain; end nodes linked through a bridge, router, or switching
hub are in separate collision domains. In this manual, the word network always
refers to a collision domain.
Side Panels
On the DFE-904's right-hand panel are the speed switch and air inlets. The left-
hand panel holds the fan outlet.