C
R
ONNECTIVITY
ULES
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-ZX 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 4-6.
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.
4-5