Product features
Automatic link restoration
The media converter will automatically re-establish the link when connected to switches if the link is lost, even with Auto-
Negotiation and Link Pass-through (
both directions
) enabled.
Full-Duplex flow control
In a full-duplex network, the maximum cable lengths are determined by the type of cables used for EOF2N cable
specifications.
The 512-Bit Rule does not apply in a full-duplex network.
Note:
Full duplex is ON permanently for the fiber port only.
Half-Duplex flow control (512-Bit Rule)
In a half-duplex network, the maximum cable lengths are determined by the round-trip dely limitations of each Fast
Ethernet collision domain. ( A collision domain is the longest path between any two terminal devices; e.g., a terminal,
switch, or router.)
The 512-Bit Rule determines the maximum length of cable permitted by calculating the round-trip delay in bit-times (BT)
of a particular collision domain. If the result is less than or equal to 512 BT, the path is good.
Flow Control
The process of adjusting the flow of data from one device to another ensures that the receiving decive can handle all of
the incoming data. This is particularly important where the sending device is capable of transmitting data much faster
than the receiving device can accept it.
Distance extension
The EOF2N media converters cam segment one (1) 10Base-T copper Ethernet and/or 100Base-TX copper Fast Ethernet,
and one (1) 100Base-FX fiber Fast Ethernet collision domain:
In a half-duplex Ethernet or Fast Ethernet environment, the EOF2N media converters extend network distances by
segmenting collision domains so that the 512-Bit Rule applies separately to each collision domain.
In a full-duplex Ethernet or Fast environment, the EOF2N media converters extend network distances to the physical cable
limitations imposed by the selected twisted-pair copper fiber cables.
Rate conversion
The EOF2N media converters allow connection of 10Mb/s terminal devices on a 10Base-T legacy Ethernet copper network
to 100Mb/s terminal devices on a 100Base-TX Fast Ethernet copper network and/or to 100Mb/s terminal devices on a
100Base-FX Fast Ethernet fiber network.
Far-End Fault (
always ON
)
When a fault occurs on an incoming fiber link (1), the media converter transmits a Far-End Fault signal on the outgoing
fiber link (2). In addition the Far-End Fault signal also activates the Link Pass-Through, which, in turn, disables the link on
the copper portion of the network (3) and (4).
9
1
2
3
4
Media
Converter A
Media
Converter B
Near-End
Device
Far-End
Device
media converter A
disables the copper link
media converter B
disables the copper link
Far-End Fault
signal is sent
original fault
on the fiber link
