H3C CR19000-16, Руководство по установке

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3-3
3. Untwist the pairs so that they can lie flat, and arrange the colored wires based on the wiring
specifications.
4. Cut the top of the wires even with one another. Insert the wires into the RJ-45 end and make
sure the wires extend to the front of the RJ-45 end and make good contact with the metal
contacts in the RJ-45 end and in the correct order.
5. Crimp the RJ-45 connector with the crimping pliers until you hear a click.
6. Repeat the above steps with the other end of the cable.
7. Use a cable tester to verify the connectivity of the cable.
Connecting an Ethernet cable
1. Connect one end of the Ethernet cable to an Ethernet copper port or management Ethernet port
on the router and the other end to the target Ethernet copper port on the peer device. Because
the 10BASE-T/100BASE-TX/1000BASE-T fixed Ethernet copper ports on the router and
Ethernet copper ports on the modules supports auto-MDI/MDIX auto-sensing, you can use a
straight-through cable or crossover cable to connect the ports.
2. Examine the status LED for the Ethernet port to verify the cable connectivity. For the description
of the port LEDs, see "Appendix C LEDs."
Connecting cables to fiber ports
About transceiver modules and optical fibers
To connect a fiber port, install an SFP, SFP+, XFP, CFP2, QSFP28, or QSFP+ transceiver module in
the fiber port and connect optical fibers with LC-type or MPO-type connectors to the transceiver
module.
Optical fibers can be classified into the following types:
•
Single mode fiber —It has a core size of 10 µm or smaller, and has a lower modal dispersion. It
carries only a single ray of light. It is mostly used for communication over longer distances.
•
Multi-mode fiber —It has a core size of 50 µm or 62.5 µm or higher, and has a higher modal
dispersion than single-mode optical fiber. It is mostly used for communication over shorter
distances.
Fiber connectors are indispensable passive components in an optical fiber communication system.
They allow the removable connection between optical channels, which makes the optical system
debugging and maintenance more convenient and the transit dispatching of the system more
flexible.
Do not use excessive force when you install or remove a fiber connector. Avoid pulling, pressing and
squeezing optical fibers with force.
Table3-3 Allowed maximum tensile force and crush load
Period of force Tensile load (N) Crush load (N/mm)
Short period 150 500
Long term 80 100