SMC Networks SMC6724L3 INT 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.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.For network applications that require routing between dissimilar network types, you can attach the TigerSwitch 10/100 units directly to a multi-protocol router. However, if you have to interconnect distinct VLANs or IP subnets, you can take advantage of the wire-speed Layer 3 routing provided by this switch.

4.The multimode fiber modules are fitted with SC connectors, but you can attach an ST plug to the switch using an SC-to-ST plug converter. If you do use an ST plug converter, be sure you run cable from the Rx (Tx) port on the module to the Tx (Rx) port on the target device.

5.As a general rule:

•the length of Gigabit fiber optic cable for a single switched link should not exceed 550 m (1805 ft) for 1000BASE-SX multimode fiber or 5 km (16404 ft) for 1000BASE-LX single-mode fiber.

•the length of 100BASE-FX fiber optic cable for a single switched link should not exceed 2 km (1.24 miles) for multimode fiber or 20 km (2.43 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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