SMC Networks VDSL2 manual Application Notes

APPLICATION NOTES

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.To interconnect distinct VLANs or IP subnets, you can attach the switch to a standard Layer 3 router. For network applications that require routing between dissimilar network types, you can attach the switch directly to a 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 (3.2 miles) for single-mode fiber.

•1000BASE-ZX: 70 km (43 miles) for single-mode fiber.

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

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