SMC Networks SMC8624T manual Application Notes

NETWORK PLANNING

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. For longer connections, you can use a 1000BASE-ZX SFP transceiver, which supports runs of up to

100 kilometers.

However, power budget constraints must also be considered when calculating the maximum cable length for your specific environment.

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