H3C Technologies H3C MSR 30 - Manual (Page 41)

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• Standard cable, also called straight-through cable, at both ends of which, wires are crimped in the
RJ-45 connectors in the same sequence. The cable connects different categories of devices, such as
a terminal device (PC for example) or router to a Hub or LAN switch. The cable accompanying the
router is straight-through cable.
• Crossover cable, at both ends of which, wires are crimped in the RJ-45 connectors in different
sequences. The cable connects the same category of devices, such as PC to PC or PC to router. You
can make crossover cables yourself as needed.
NOTE:
In making network cables, shielded cables are preferred for electromagnetic compatibility sake.
2. Optical Ethernet interface cable
For the 10/100/1000 Mbps optical Ethernet interfaces, select single mode or multi-mode optical fibers
depending on the type of the installed 1000Base-X SFP modules. As the interfaces that these SFP
modules provide use LC-type optical connectors, you must use fibers with LC-type connectors for them. All
these SFP modules are hot swappable.
NOTE:
SFP modules are optional. They are provided only when ordered.
Connecting the Ethernet cable
NOTE:
For 10/100/1000 Mbps fiber and electrical interface, the system considers the electrical interface as the
operating interface by default. Users can use the combo enable command to switch between them in
interface view.
1. Connect an electrical Ethernet interface cable.
Follow the steps below to connect an Ethernet cable:
Step1 Connect one end of the Ethernet cable to an Ethernet port on the router and the other end to another
device.
• For a 10/100 Mbps port provided by the RPU, connect it to a PC or another router using a crossover
cable or to a Hub or LAN switch using a straight-through cable.
• For a 10/100/1000 Mbps port provided by the RPU, connect it to a PC or another router using a
crossover cable or to a Hub or LAN switch using a straight-through cable.
Step2 View the LINK LED of the Ethernet interface: ON means a link is present and OFF means no link is
present. Check the line for the cause.
2. Connect an optical Ethernet interface cable
CAUTION:
In connecting optical fibers, observe the following:
• Do not over-bend the fiber. Its curvature radius must be greater than 10 cm (3.9 in.).
• Ensure that the Tx and Rx ends are correctly connected.
• Ensure that the fiber ends are clean.