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Application Notes
1. Full-duplex operation only applies to point-to-point access (such as when a
switch is attached to a workstation, server or another switch). When the switch
is connected to a hub, both devices must operate in half-duplex mode.
2. Avoid using flow control on a port connected to a hub unless it is actually
required to solve a problem. Otherwise back pressure jamming signals may
degrade overall performance for the segment attached to the hub.
3. As a general rule the length of fiber optic cable for a single switched link should
not exceed 550 m (1805 ft) for multimode fiber or 5 km (16404 ft) for
single-mode fiber.
However, power budget constraints must also be considered when calculating
the maximum cable length for your specific environment.