3Com 3C16465B, 3C16464B User Manual
The SuperStack® 3 Baseline 10/100 Switch is a versatile,
easy-to-use unmanaged switch. It is ideal for users who want the
high-speed performance of 10/100 switching but do not need
sophisticated management capabilities. The Baseline 10/100
Switch is shipped ready for use. No configuration is necessary.
The Baseline 10/100 Switch has 12 or 24 shielded RJ-45,
10/100Mbps auto-negotiating ports on the front panel. Each port
automatically determines the speed and duplex mode of the
connected equipment and provides a suitable switched
connection.
The Baseline 10/100 Switch is suited for office use where it can
be free standing, or rack mounted (in a wiring closet or
equipment room).
The Baseline 10/100 Switch comes with:
One power cord for use with the Baseline 10/100 Switch
Four self-adhesive rubber pads
One mounting kit
The Switch can be powered either from the AC mains supply, or
through an optional 3Com SuperStack 3 Advanced Redundant
Power System (3C16071B). Contact your supplier for details.
The Baseline 10/100 Switch provides high performance switched
connections to 10Mbps and 100Mbps hubs, servers and
workstations that require a dedicated switched link.
I
NTRODUCTION
SuperStack® 3 Baseline 10/100 Switch 12-Port (3C16464B) an d
24-Port (3C16465B) User Guide
DUA1646-4AAA04
1
Numbered elements in this diagram refer to numbered sections in
the text. A 24-port unit is shown.
Front Panel
1
24 RJ-45 10/100 Ports and 1 RJ-45 1000 Port
WARNING
: RJ-45 ports.
These are shielded RJ-45 data
sockets. They cannot be used as telephone sockets. Only
connect RJ-45 data connectors to these sockets. Either
shielded or unshielded data cables with shielded or
unshielded jacks can be connected to these data sockets.
AVERTISSEMENT: Les ports RJ-45.
Il s’agit de prises
femelles blindées de données RJ-45. Vous ne pouvez pas
les utiliser comme prise de téléphone. Branchez uniquement des connecteurs de données RJ-45 sur ces prises
femelles. Les câbles de données blindés ou non blindés,
avec les jacks blindés ou non blindés, l’un ou l’autre, peuvent être branchés à ces prises de courant de données.
WARNUNG: RJ-45-Anschlüsse.
Dies sind abgeschirmte
RJ-45-Datenbuchsen. Sie können nicht als Telefonanschlußbuchsen verwendet werden. An diesen Buchsen
dürfen nur RJ-45-Datenstecker angeschlossen werden.
Diese Datenstecker können entweder mit abgeschirmten
oder unabgeschirmten Datenkabeln mit abgeschirmten
oder unabgeschirmten Klinkensteckern verbunden werden.
10BASE-T/100BASE-TX Ports
The Baseline 10/100 Switch has 12 (3C16464B) or 24 (3C16465B)
10/100Mbps auto-negotiating ports.
Ports 1-11 (3C16464B) or 1–23 (3C16465B) are MDIX ports. Each
can be connected to a device with an MDI port (such as a
workstation) using a normal ‘straight through’ TP (twisted pair)
cable. Alternatively, you can connect to a device with MDIX ports
using ‘cross-over’ TP cable.
Port 12 (3C16464B) or 24 (3C16465B) is ‘switch selectable’
MDI/MDIX usin g the MD I swit ch, as d escri bed in 2. Using this
port, you can connect to any other device without the need for
‘cross-over’ cable.
To connect a device to the Baseline 10/100 Switch, use Category
5 unshielded or shielded (screened) 100 Ohm TP cable (or
Category 3 cable for a 10Mbps connection). The maximum length
of cable for each connection is 100m (328ft). Connect one end of
the cable to an RJ-45 port on the Baseline 10/100 Switch, and
the other end to the appropriate RJ-45 port on the connecting
device.
Each port on the Baseline 10/100 Switch is auto-negotiating: its
speed and duplex mode (half duplex or full duplex) are
automatically determined by the capabilities of the connected
device. Each port can be connected to either a 10BASE-T or a
100BASE-TX device.
I
f you connect two Baseline 10/100 Switch units together,
the link between them operates at 100Mbps full duplex.
You must use Category 5 cable when connecting the
units.
CAUTION:
The Baseline 10/100 Switch supports full
duplex auto-negotiation. If the connected device does not
support auto-negotiation, the Switch will operate in half
duplex mode (even if the device is operating in full duplex
mode). In such a configuration, you may notice some
degradation of network performance. 3Com recommends
that you use devices that are capable of auto-negotiation
(and that you ensure that auto-negotiation is enabled, if
it is a configurable option).
To connect the Baseline 10/100 Switch to a SuperStack 3 hub
using a normal ‘straight through’ cable, connect any port on the
Baseline 10/100 Switch to the MDI/MDIX port on the hub, as
shown below. Ensure that the MDI switch on the hub is in (MDI).
An alternative method of connecting the Baseline 10/100 Switch
to a hub using a normal ‘straight through’ cable is to connect any
MDIX port on the hub to the MDI/MDIX port on the Baseline
10/100 Switch, ensuring that its MDI Switch is set to in (MDI).
You can us e ‘cross-over’ TP cable to connect any MDIX port on
the Baseline 10/100 Switch to any MDIX port on a hub.
2
MDI Sw itch
This switch affects port 12 (3C16364B) or port 24 (3C16465B):
H
OW TO
U
SE THE
B
ASELINE
10/100 S
WITCH
Out
Port 12 or 24 is a n MDIX p ort .
It can be connected to a device with an MDI port (such
as a workstation) using a normal ‘straight throu gh’ TP
cable.
In
Port 12 or 24 is a n MDI p ort.
It can be conn ect ed to an MDIX port on a device (su ch
as a hub) usin g a n orm al ‘straight through’ TP cable.
!
MDIX
MDI
2
3
Display Function Switch
This switch affects the Status LEDs described in 4 and 5.
4
Activity/Duplex Status LEDs
The first (top) and third row of LEDs, which are colored yellow,
show the activity or duplex status of the related ports:
When the Display Function switch is out (its normal position),
these LEDs show the activity of each port. The LED flashes
when packets are received or transmitted on the port.
When the Display Function switch is pressed in, these LEDs
show the duplex status of each port:
5
Link/Speed Status LEDs
The second and fourth (bottom) row of Status LEDs, which are
colored green, show the link or speed status of the related ports:
When the Display Function switch is out (its normal position),
these LEDs show the link status of each port:
When the Display Function switch is pressed in, these LEDs
show the speed status of each port:
6
Power/Self Test LED
The Power/Self test LED shows a number of conditions:
Rear Panel Connections
7
Power S upply
The Baseline 10/100 Switch automatically adjusts to the supply
voltage. Only use the power cord that is supplied with the
Baseline 10/100 Switch.
8
Socket for Re dundant Po wer System (RPS)
Only connect a 3Com SuperStack 3 Advanced RPS (3C16070,
3C16071, 3C16071A or 3C16071B) to this socket. An
appropriate power module and cable is required. The connector
on the Baseline 10/100 Switch is a Type 2 socket. For details,
follow the installation instructions in the guides that accompany
the Advanced RPS and the power module.
CAUTION: When connecting an RPS power module cable
to the unit, take off the protective cover by removing the
fixings with a suitable tool. Keep the cover and the fixings in a safe place. If you remove the RPS power module
cable at any time, you must replace the protective cover.
9
Self-adhesive Pads
The unit is supplied with four self-adhesive rubber pads.
You do not need to apply the pads if you intend to rack
mount the unit.
If th e un it i s to be p art of a free sta ndi ng st ack , ap ply the pad s 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
rece sse s o f th e lo we r u nit .
Positioning the Baseline 10/100 Switch
CAUTION: If installing the Baseline 10/100 Switch in a
stack of different size SuperStack 3 units, the smaller
units must be installed above the larger ones. Do not
have a free standing stack of more than six units.
When deciding where to position the Baseline 10/100 Switch
ensure:
It is accessible and cables can be connected easily.
Cabling is away from sources of electrical noise such as
radios, transmitters and broadband amplifiers, and away from
power lines and fluorescent lighting fixtures.
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 recommend that you provide
a minimum of 25mm (1in.) clearance).
To prolong the operational life of your units:
Never stack units more than six high if free standing, and
ensure that cables are supported so that they do not cause
the stack to fall over.
Do not place objects on top of any unit or stack.
Do not obstruct any vents at the sides of the case.
Rack Mounting
The Baseline 10/100 Switch can be mounted in a 19-inch equipment rack using the Mounting Kit. Refer to “Mounting Kit
Instructions” on page 5.
Power Up
Use the following sequence to power up the Baseline 10/100
Switch :
Check the network connections and cables.
Connect the power supply cable to the appropriate power
socket on the rear panel of the unit; refer to 7 or 8.
Connect the plug to the power supply outlet socket and
switch on the power supply at the socket. If you are using
the Advanced Redundant Power System, ensure it is powered on.
When the switch is powered on, the Power/Self Test LED should
first flash green, then stay lit. If it does not, refer to 6.
Spot Checks
At frequent intervals you should visually check the Baseline
10/100 Switch. Regular checks can give you an early warning of a
possible failure; any problems can then be attended to when
there will be least effect on users. Check the following:
If you experience any problems operating the Baseline 10/100 Switch,
refe r to “Problem Solving” on page 5.
Out
This is t he no rma l po sition of th e swi tch.
The St at us L ED s s ho w t he Ac ti vi ty a nd L ink St at us of
each p ort .
In
When the switch is pressed in, the Status LEDs show
the Dup l ex a nd S pe ed St atu s of eac h p ort . Th e s wi tch
returns to the out pos ition whe n released.
On
The port is operating in full duplex mode.
Off
Ports 1 to 24: If the link is established, the port is operating in
half du plex mode.
On
The li nk h as be en es ta bli she d a nd th e seg men t a tt ac h ed t o th e
port is functional.
Off
The link has not bee n es tabli sh ed. Ei ther no thin g is conn ecte d
to the port, or there is a problem:
■
Check that the atta ched dev ice is power ed on.
■
Check that the cab le is the c orrec t type and i s not faul ty.
If the LED i s off f or por t 12 ( 3C1 646 4B) o r 2 4 (3C 16465 B) ,
check the setting of the MDI switch. Refe r to 2. Try toggling the
MDI switch.
If the port is conn ected to anoth er unit’s MDI/MDIX port, check
the othe r u nit’s MDI switch position .
If these ch eck s do no t i den tify the cau se of a proble m, i t m ay
be that the unit or the device connected to the port is faulty.
Contac t yo ur s uppl ier fo r f urt her a dvi ce.
On
The link is operating at 100Mbps.
Off
If the link is pre sent, it is op er ating at 10Mb ps.
Green
The unit is powered on and ready for use.
Flashing
green
The unit is performing its power up procedure. If the LED is still
flashing gre en 1 min ute a fter po wer u p, th ere i s a f au lt. C ontact your s upp lier.
Yellow
The unit has fa ile d. Po we r off t he unit , wa it f ive se con ds a nd
power on th e u nit. C o ntac t yo ur s uppl ier i f the LE D c onti nues
to light yellow.
Off
The unit is not receiving power:
■
Check the power cord is connected correctly.
■
If the unit still does not operate, contact your supplier.
Cabling Check that all external cabling connections are secure
and th at no c ab les are pu l led ta ut.
Cooling fa ns Where p os si bl e, che ck th at th e c o oli ng fa ns are op er at -
ing by liste ning to the unit . The fan s a re fi tted near to
the front right hand side of the unit (when viewed from
the front) .
!
3
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