49
•
Before connecting a fiber, use dust free paper and absolute alcohol to clean the end face of the
fiber connector. You can brush the end face only in one direction. You also need to brush the
end face of the fiber port.
•
Never bend or curve a fiber when connecting it. After a fiber is installed, the bend radius must
be not less than 40 mm (the minimum dynamic bend radius is 20 D, and the minimum static
bend radius is 10 D. D indicates the outer diameter of dust caps).
•
If the fiber has to pass through a metallic board hole, the hole must have a sleek and fully filleted
surface (the filleting radius must be not less than 2 mm). When passing through a metallic board
hole or bending along the acute side of mechanical parts, the fiber must wear jackets or
cushions.
•
Never use excessive force to the fiber connector. Never pull, press, or extrude the fiber fiercely.
For the allowed maximum tensile load and crush load, see "Appendix E Cables."
The installation of different optical fiber connectors is similar.
To connect your switch to the network through optical fibers:
1.
Install a transceiver module into the port.
2.
Remove the dust cover of the optical fiber connector, and clean the end of the optical fiber.
3.
Remove the dust plug of the transceiver module, connect one end of the optical fiber to the
transceiver module in the switch, and connect the other end into the transceiver module in the
peer device.
{
For how to connect an LC connector, see
.
{
For how to connect an MPO connector, see
.
4.
Examine the port LEDs for incorrect connection.
For more information about the LED status, see "Appendix C LEDs."
NOTE:
For the QSFP+ module, you do not need to differentiate between the transmitter (TX) and receiver
(RX) ports. For other types of transceiver modules, the Tx port on one end must connect to the RX
port on the other end.
Figure 43 Using an LC optical fiber connector to connect an SFP module
LC plug
SFP module
