3Com 6040 Installation Manual page 27

3Com Router 6000 Family
Installation Manual
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:
Step 1: 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 Ethernet port provided by the RPU2, either
straight-through or crossover cable can be used to connect to a Hub or LAN
switch because MDI/MDIX autocrossover is supported.
Step 2: View the LINK LED of the Ethernet interface: ON means a link is present. OFF means
no link is present; check the line for the cause.
1) Connect the fiber-optic 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.
3Com Corporation
3-7
Chapter 3
Installing the Router