3com 3c16477 User Manual

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The traffic prioritization feature supported by the Switch 
is compatible with the relevant sections of the IEEE 
802.1D standard (incorporating IEEE 802.1p).
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Activity/Link/Speed Status LEDs
The top row of Status LEDs, labelled “Link/Activity,” show the 
link and activity status of the related ports:
3
Duplex Status LEDs
The second row of Status LEDs, which are colored yellow, show 
the duplex status of the related ports:
1000BASE-T only operates in full duplex mode. 
10BASE-T/100BASE-TX can be in half or full duplex 
mode.
4
Power LED
The Power LED shows the power status of the Switch:
Rear Panel Connections
5
Power Supply
The Baseline 8 Port Gigabit Switch automatically adjusts to the 
supply voltage. Only use the power cord that is supplied with the 
unit.
Positioning the Switch
When deciding where to position the Baseline 8 Port Gigabit 
Switch ensure:
„
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, therefore slowing down 
your network.
„
Water or moisture cannot enter the case of the unit.
„
Air flow around the unit and through the vents in 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 from dust as possible.
„
Temperature operating limits are not likely to be exceeded. It 
is recommended that the unit is installed in a clean, air 
conditioned environment.
It is always good practice to wear an anti-static wrist 
strap when installing network equipment, 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, if possible. Static discharge 
can cause reliability problems in your equipment.
Rack Mounting or Free Standing
This unit can be mounted in a 19-inch equipment rack using the 
Mounting Kit. Refer to “Mounting Kit Instructions” on page 4. It 
can also be free standing. Do not place objects on top of the 
unit or stack. 
The unit is supplied with four self-adhesive rubber pads. If the 
unit is to be part of a free standing stack, apply the pads to each 
marked corner area on the underside of the unit. Place the unit 
on top of the lower unit, ensuring that the pads locate with the 
recesses of the lower unit.
Do not apply the pads if you intend to rack mount the 
unit.
CAUTION: If installing the Baseline 8 Port Gigabit Switch 
in a free standing stack of different size SuperStack II or 
SuperStack 3 units, the smaller units must be installed 
above the larger ones. Do not build a free standing 
stack of more than six units.
Priority Level
Traffic Type
0
Best Effort
1
Background
2
Standard (spare)
3
Excellent Effort (business critical)
4
Controlled Load (streaming multimedia)
5
Video (Interactive media), less than 100 milliseconds 
latency and jitter.
6
Voice (Interactive voice), less than 10 milliseconds 
latency and jitter.
7
Network Control Reserved traffic
Status
Meaning
On
The link has been established.
Flashing
Packets are being received or transmitted on the port.
Off
If the link has not been established, either nothing is con-
nected to the port, or there is a problem:
Check that the attached device is powered on.
Check that the cable is the correct type and is not faulty.
If these checks do not identify the cause of the problem, it 
may be that the unit or the device connected to the port is 
faulty. Contact your supplier for further advice.
Green
The link is operating at 1000 Mbps.
Yellow
The link is operating at 10 or 100 Mbps.
Status
Meaning
On Yellow
The port is operating in full duplex mode.
Off
The port is operating in half duplex mode.
Status
Meaning
On Green
The unit is powered on and ready for use.
Off
The unit is not receiving power:
Check that the power cord is connected correctly.
If the unit still does not operate, contact your supplier.
I
NSTALLING
 
THE
 S
WITCH
!
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