Installation guide

2-6

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. As a general rule, the length of fiber optic cable for a single switched link should

not exceed:

• 1000BASE-SX: 550 m (1805 ft) for multimode fiber

• 1000BASE-LX: 5 km (3.1 miles) for single-mode fiber

• 1000BASE-LH: 70 km (43.5 miles) for single-mode fiber

• 10GBASE-SR: 300 m (984 ft) for multimode fiber

• 10GBASE-LR: 10 km (6.2 miles) for single-mode fiber

• 10GBASE-ER: 40 km (24.8 miles) for single-mode fiber

However, power budget constraints must also be considered when calculating

the maximum cable length for your specific environment.