3Com Baseline 2226-PWR Plus Manuale di avvio rapido - Pagina 5
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I
NSTALLATION
Checking the Package Contents
The Baseline Switch 2226-PWR Plus package includes the
following items:
One Baseline Switch 2226-PWR Plus unit
One power cord
Four standard height, self-adhesive rubber pads
One mounting kit
One CD-ROM, which contains this Quick Start Guide, the
3Com Discovery application, and 3CServer (3Com TFTP server
application)
One warranty flyer
If any of the above items are damaged or missing, please contact
your network supplier immediately.
Positioning the Switch
When deciding where to position the Switch, ensure that:
It is accessible and cables can be connected easily.
Cabling is away from sources of electrical noise. These include
lift shafts, microwave ovens, and air conditioning units.
Electromagnetic fields can interfere with the signals on copper
cabling and introduce errors, and, consequently, slow down
your network.
Water or moisture cannot enter the case of the unit.
Air flow around the unit and through the vents on the side of
the case is not restricted. 3Com recommends that you
provide a minimum of 25 mm (1 in.) clearance.
The air is as free of dust as possible.
Temperature operating limits are not likely to be exceeded.
3Com recommends that you install the Switch in a clean, air
conditioned environment.
When installing network equipment, it is always good
practice to wear an antistatic wrist strap that is connected
to a ground point. If one is not available, try to keep in
contact with a grounded rack and avoid touching the
unit's ports and connectors. Static discharge can cause
reliability problems in your equipment.
Rack-Mounting or Free-Standing
The unit can be mounted in a 19-inch equipment rack using the
Mounting Kit (refer to "Mounting Kit Instructions"), or it can be
free-standing. Do not place objects on top of the unit or stack.
CAUTION: If you are installing the Switch in a
free-standing stack with Baseline or SuperStack 3 units of
!
different sizes, install the smaller units above the larger
ones. Do not have a free-standing stack of more than six
units.
Power Supply
Power problems can cause serious failures and downtime on your
network. Ensure that the power input to your system is clean and
free from sags and surges to avoid unforeseen network outages.
3Com recommends that you install power conditioning, especially
in areas prone to blackouts, power dips, and electrical storms.
R
ECOMMENDATIONS
The unit is intended to be grounded. Ensure it is connected to
earth ground during normal use. Installing proper grounding helps
to avoid damage from lightning and power surges.
Powering On
To power on the Switch:
1 Check the network connections and cables.
2 Connect the power supply cable to the appropriate power
socket on the rear panel of the unit; refer to "9 Power
Supply" on page 4.
3 Connect the plug to the power supply outlet socket, and then
switch on the power supply at the socket.
When the switch is powered on, the Power LED should be on. If
it is not, refer to "6 Power LED" on page 3.
Spot Checks
At frequent intervals, you should visually check the Switch.
Regular spot checks can give you an early warning of a potential
failure; any problems can then be attended to when there will be
least effect on users. Check the following:
Cabling
Verify that all external cabling connections are secure and
that no cables are pulled taut.
Cooling fan
Where possible, verify that the cooling fan is operating
by listening to the unit. The fan is fitted on right side
panel (when viewed from the front) of the unit.
If you experience any problems operating the Switch, refer to
"Troubleshooting" on page 7.
Connecting to a Network Device
To connect a device to the Switch, use Category 5 unshielded or
shielded (screened) 100 ohm TP cable (or Category 3 cable for a
10 Mbps connection). The maximum length of cable for each
connection is 100 m (328 ft). Connect one end of the cable to an
RJ-45 port on the Switch and the other end to the appropriate
RJ-45 port on the connecting device.
3Com recommends the use of Category 5e cables for
1000BASE-T operation.
SFP Operation
The following sections describe how to insert an SFP transceiver
into an SFP slot.
SFP transceivers are hot-insertable and hot-swappable. You
can remove them from and insert them into any SFP port
without having to power off the Switch.
Approved SFP Transceivers
The following list of approved SFP transceivers is correct at the
time of publication:
3CSFP91 SFP (SX)
3CSFP92 SFP (LX)
To access the latest list of approved SFP transceivers for the
Switch on the 3Com Web site, enter this URL into your Internet
browser:
http://www.3com.com
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