Transition Networks CBFTF10xx-1xx, Руководство пользователя

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Transition Networks CBFTF10xx-1xx User Guide
33403 Rev. E https://www.transition.com Page 8 of 15
Product Features
AutoCross
™
The AutoCross feature detects and configures the twisted-pair copper port on the CBFTF10xx-10x media
converter to the correct straight-through (MDI) or crossover (MDI-X) configuration. This feature allows
either MDI or MDI-X cable to connect the media converter to devices such as hubs, transceivers, or
network interface cards (NICs).
(No operator intervention required.)
Link Pass-Through
The Link Pass-Through (LPT) feature allows the media converter to monitor both the fiber and copper RX
(receive) ports for loss of signal. In the event of a loss of an RX signal (1), the media converter will
automatically disable the TX (transmit) signal (2), thus, “passing through” the link loss (3). The far-end
device is automatically notified of the link loss (4), which prevents the loss of valuable data unknowingly
transmitted over an invalid link.
LPT with Valid Link ID: When a LPT condition occurs the Link/Activity LED for the port that still would
have a link up condition, but is being forced into a link down, blinks on and off every 2 seconds while
the LPT condition exists.
Far-end Fault
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).
Auto-Negotiation
The Auto-Negotiation feature allows the CBFTF10xx-10x media converter to automatically configure
itself to achieve the best possible mode of operation over a link. The media converter will broadcast its
speed
(10 Mb/s or 100 Mb/s)
and duplex capabilities
(full or half)
to the other devices and negotiates
the best mode of operation. Auto-Negotiation allows quick and easy installation because the optimal
link is established automatically. No user intervention is required to determine the best mode of
operation.
In a scenario where the media converter is linked to a non-negotiating device is a case where you may
want to disable Auto-Negotiation. In this instance, the mode of operation will drop to the least common
denominator between the two devices
(e.g. 100 Mb/s, half duplex)
. Disabling this feature lets you force
the connection to the best mode of operation.