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transmitted through the cable and lead to degraded performance on the port.
3. Connect one end of the cable to the LC port on the switch and the other end to
the LC port on the other device. Since LC connectors are keyed, the cable can be
attached in only one orientation.
Figure 4-3. Making Fiber Port Connections
4. As a connection is made, check the Link LED on the switch corresponding to
the port to be sure that the connection is valid. The 1000BASE-SX, 1000BASE-LX,
1000BASE-LH fiber optic ports operate at 1 Gbps, full duplex, with
auto-negotiation of flow control. The maximum length for fiber optic cable
operating at Gigabit speed will depend on the fiber type as listed under “1000
Mbps Gigabit Ethernet Collision Domain” on page 4-5.
Connectivity Rules
When adding hubs (repeaters) to your network, please follow the connectivity
rules listed in the manuals for these products. However, note that because
switches break up the path for connected devices into separate collision domains,
you should not include the switch or connected cabling in your calculations for
cascade length involving other devices.
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections should
also work for 1000BASE-T, providing that all four wire pairs are connected.
However, it is recommended that for all critical connections, or any new cable
installations, Category 5e (enhanced Category 5) or Category 6 cable should be
used. The Category 5e and 6 specifications include test parameters that are only
recommendations for Category 5. Therefore, the first step in preparing existing