H3C MSR 30-20 ROUTER Installation Manual page 39

Figure 3-13 Ethernet cable
Ethernet cables fit into the following two categories:
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.
In making network cables, shielded cables are preferred for electromagnetic compatibility sake.
2) Connecting electrical Ethernet interface cable.
For the 10/100/1000 Mbps fiber-optic 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 fiber-optic connectors, you must use fibers with LC-type connectors
for them. All these SFP modules are hot swappable.
SFP modules are optional. They are provided only when ordered.
Connecting the Ethernet cable
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) Connecting electrical Ethernet interface cable.
Follow the steps below to connect an Ethernet cable:
Step 1: Connect one end of the Ethernet cable to an Ethernet port on the router and the other end to
another device.
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