3Com Router 6000 Family
Installation Manual
Chapter 4
Starting and Configuring the Route
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3Com Corporation
3-8
Figure 3-8 Ethernet cable
Ethernet cables fit into the following two categories:
z Straight-through cable, at both ends of which, the wires are crimped in the RJ-45
connectors in the same sequence. The cable connects different types of devices,
such as a terminal device (PC for example) or router to a Hub or LAN switch. The
network cables shipped with the router are standard cables.
z Crossover cable, at both ends of which, the wires are crimped in the RJ-45
connectors in different sequences. The cable connects the same type of devices,
such as PC to PC or PC to router. You can make crossover cables by yourself as
needed.
Note:
In preparing network cables, shielded cables are preferred for electromagnetic
compatibility sake.
2) Fiber-optic Ethernet interface cable
For the 10/100/1000M Ethernet interfaces on the RPU2, select single mode or
multi-mode optical fibers depending on the type of the installed 1000Base-FX SFPs.
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 SFPs are hot
swappable.
Note:
SFPs are optional. They are provided only when ordered.
III. Connecting the Ethernet cable
Note:
The fiber-optic and electrical connections that a 10/100/1000 Mbps Ethernet interface
provides cannot operate at the same time. By default, if both connections are present,
the system considers the electrical interface as the operating interface.
Connect the electrical Ethernet interface cable Follow these steps to connect the cable: