N
ETWORK
 P
LANNING
2-6
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. For network applications that require routing between dissimilar 
network types, you can attach the switch directly to a multi-protocol 
router.
3. 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-ZX: 100 km (62.1 miles) for single-mode fiber
However, power budget constraints must also be considered when 
calculating the maximum cable length for your specific environment.