3Com SuperStack II Switch 9300, Руководство по началу работы

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Gigabit Ethernet Ports 27
Cabling 1000BASE-SX and 1000BASE-LX (SC) Ports
Use this section when you cable either version of the
1000BASE ports.
Follow these guidelines when cabling SC connectors:
■
Verify that the length of the fiber cable from the
system to any attached device does not exceed the
distances recommended in “Guidelines for Gigabit
Ethernet Cabling” earlier in this chapter.
■
The Gigabit Ethernet fiber cable terminates in a
pair of SC connectors. The 1000BASE-LX cable
connectors are blue, and the 1000BASE-SX cable
connectors are black. The connectors are made so
that you can only insert them correctly.
■
Keep the ports and connectors free of dust. See
“Cleaning Dirty Fiber Optic Ports and Connectors”
on page 42 for details.
To cable an SC port:
1
Remove the dust covers and save them for future use.
2
Examine the port and connector pair for dust. Verify
that nothing blocks the light transmission between
the port and its connectors.
3
Attach one male connector of the SC cable connector
pair to the right side of a fixed Gigabit Ethernet port.
4
Attach the remaining connector of the SC cable
connector pair to the left side of the Gigabit Ethernet
port.
5
To cable another port, repeat steps 1 through 4.
Figure 11 shows the Gigabit Ethernet cabling.
Figure 11 Cabling the Gigabit Ethernet Port
Port 7
1000 Base - LX
TX RX 1
1000 Base - SX
10 Base - TX
1000 Base - SX
C
TX RX 2 TX RX 3
TX RX 4 TX RX 5 TX RX 6 TX RX 7 TX RX 8 TX
Stat Pckt
SC connector
Fiber cables