The VOL-1081 Mini-switch is a compact desktop size switch that is ideal for small office
or home office networks. It provides wire-speed, Fast Ethernet switching offering highperformance at low-cost.
ÿ The Switch automatically detects the speed of the remote device to allow use of 10 and
100Mbps devices.
ÿ The Switch features store-and-forward switching and auto-learn of source addresses,
whichitstoresona4K-entryMACaddresstable.
ÿ The 100Base-FX VF-45 fiber port allows connections up to 2 Kilometersaway.
Features
ÿ 8x 10/100Mbps Fast Ethernet UTP Switch ports
ÿ Automatic MDI/MDIX crossover for each 10Base-T/100Base-TX port
ÿ One 100Mbps Fast Ethernet Fiber (VF-45) port
ÿ One Dip-Switch to select fiber port full-duplex or half-duplex mode
ÿ N-way auto-negotiation supported
ÿ Full-duplexandhalf-duplex supported
ÿ Store-and-forward switching architecture for abnormal packet filtering
ÿ Full wire speed forwarding rate
ÿ 4K-entry MAC address table
ÿ 256KB memory buffer sharing
ÿ LED-indicators for power, 100M, LK/ACT, FD/COL statuses
ÿ Compact size
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2. Hardware Description
The VOL-1081 Mini-switch is a compact switch with 8x 10/100 N-way UTP switch ports
plus one 100Base-FX fiber port.
Front Panel
ÿThe Front Panel of the VOL-1081 Mini-switch consists of 8x 10/100 N-wayUTP switch
ports (automatic MDI/MDIX), one 100Base-FXfiber port and one Dip-switch to select
fiber port full-duplex or half-duplexmode. The LED indicatorsare also locatedon the
front panel of the switch.
LED
indicators
VF-45 Connector
100Base-FX port
RJ-45 Connectors
10/100Base-T/TX
port
Figure 2-1. The Front Panel of the VOL-1081 Mini-switch with VF-45 connector
ÿ [In general, MDI means connecting to another Hub or Switch while MDIX means
connecting to a workstation or PC. Therefore, Auto MDI/MDIX means that you can
connect to another Switchor workstation without changing straight through or
crossover cabling.]
ÿ 100Base-FX Fiber Port: One VF-45™fiberconnector is availablefor the VOL-1081
Mini-switch as shown above. The distance for fiber cabling can be extended up to 2
kilometers using full duplex.
ÿ DIP-switch: the DIP-switch selects Full-duplex or Half-duplex mode for fiber port.
Generally Full-duplex is used. When the switch is changed, power must be cycled to
read the switch.
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LED Indicators
ÿ The following table describes the LED status and description. The LEDs provide a
real-time indication of system conditions.
LEDStatusColorDescription
Power
100 Mb
Lnk /
Act
Fdx /
Col
OnGreenPower On
OnGreenThe port is operating at the speed of 100Mbps.
OffIn 10Mbps mode or no deviceattached
OnGreenThe port is successfully connecting with the device.
BlinksThe port is receiving or transmittingdata.
OffNo device attached.
OnYellowThe port is operating in Full-duplex mode.
BlinksCollision of Packets occurs in the port.
OffHalf-duplex mode or no device attached.
Rear Panel
The 3-pronged power plug is located at the Rear Panel of the Mini-switch as shown
in Figure 2-2. The Switch will work with 100-240V AC, 50-60Hz.
Figure 2-2 The Rear Panel of the VOL-1081 Fiber Switch
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Desktop I nstallation
ÿ Set the Switch on a clean,smooth, level, and sturdy surface with a poweroutlet
nearby.
ÿ Make sure there is enough clearance around the Switch to allow attachment of
cables,power cord and air circulation.
Attaching Rubber Feet
ÿ Make sure the surface on the bottom of the Switch is grease and dustfree.
ÿ Remove adhesive backing from the rubber feet and apply them to each corner on
the bottom of the Switch, to minimize shock and vibration.
Power On
ÿ Connect the power cord to the power socket on the rear panel of the Switch.
ÿ Connect the power cord to any power outlet in the range 100-240 V,50~60 Hz.
ÿ Check that the power indicator on the front panel is on.
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3. Network Application
This section provides an example of network topology in which the Switch is used. In
general,theVOL-1081 Mini-switch is designed to be used as a desktopor segmentswitch.
You can use the VOL-1081 Mini-switch to connectPCs, workstations, and servers to each
other by connecting these devices directly to the Switch. The Switch automatically learns
node address, which are subsequently used to f ilter and forward all traffic based on the
destination address.
Desktop Application
The VOL-1081 Mini-switch is designed to be a desktop switch, which is ideal for small
workgroups. The Switch can be used as a standalone switch to which personalcomputers,
servers,or printer serversare directly connected to form a workgroup.
Remote
User’s
PC
2 Km max.
fiber link
Figure 3-1. Desktop Application
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4. Trouble Shooting
This troubleshooting section is intended to help you solve the most common problems on
the VOL-1081 Fiber Switch. The Switch can be easily monitored through panel indicators
to assist in identifying problems. This section describes common problems you may
encounter and where you can find possible solutions.
Diagnosing with the LED Indicators
Link
If the Lnk / Act indicator does not light up after making a connection check whetherthe
network interface (e.g.,a network adapter card on the attached device),network cable,
or switch port is defective. Verify that the switch and attached device are on. Be surethe
cable is plugged in at both ends. Verify that the proper cable type is used and its length
does not exceed specified limits.
Power
If the Pwr indicator does turn on when the power cord is plugged in, you may have a
problem with power outlet,or power cord. However, if the Switch powersoff after
runningfor a while check for loose power connections, power lossesor surgesat power
outlet.
Transmission Mode
The VOL-1081 RJ-45 ports use auto-negotiation to set the transmission mode (i.e., half
or full duplex). Verify that each attached device is configured to use auto-negotiation to
set the transmission mode. If auto-negotiation fails the switch will default to half duplex.
This means no connection will occur if the device attached to the RJ-45 port is set to full
duplex mode.
The fiber port requires a manual setting of the transmission mode by means of the DIP
switch. This means the device attachedto the fiber port must be similarly configured
(i.e., half or full duplex). Remember to cycle the power on the VOL-1081 after the DIP
switch is changed.
Cabling
ÿ RJ-45 ports: Use unshielded twisted-pair (UTP)or shield twisted-pair (STP) cable for
RJ-45 connections: 100Category 3, 4 or 5 cable for 10Mbps connections or 100
Category5 cable for 100Mbps connections.Also be sure thatthe length of any twisted-
pair connection does not exceed 100 meters (328 feet).
ÿ 100Base-FX fiber port: Fiber port can use 50, or 62.5um multi-mode fiber cable to
14,880 pps per Ethernet port (10 Mbps) max.
148,800 pps per Fast Ethernet port (100 Mbps) max.
100Mb = 100 Mb/s operation
Lk/Act = Link / Activity
Fdx/Col = Full duplex operation / Collision
Full-, half-duplex mode selected by dip-switch
Automatic MDI/MDIX crossover
N-way Auto-negotiating
Full-, half-duplex support
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Power requirements
AC Input100 to 240 Volts AC, 50 to 60Hz
Power consumptionMax. 12 Watts
Physical and Environmental Specifications
Dimensions
Switch
Weight
Switch1.01 kg (2.2 lbs.)
Temperature
Operating
Storage
Humidity
Operating/Storage10 to 90% non-condensing
250 x 132 x 37 mm L x W x H, (9.84 x 5.19 x 1.47 inches)
0to45°C(32to113°F)
-40to70°C(-40to158°F)
6.0 Agency Approvals
Electromagnetic and Safety Approvals
EMIFCC ClassB
SafetyUL 1950, cUL
FCC Statement
This equipment has been tested and found to comply with the limits for a class B device, pursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against
harmful interference in a commercial installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with instructions, may cause
harmful interference on radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case, the user will be required to correct the
interference at the user’s own expense.
CE Mark
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Important Notice
Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and
liabilityassociated with such use.
Warranty; Limited Remedy; Limited Liability
This product will be free from defectsin material and manufacture for a period of one year from the date of purchase. 3M MAKES NO
OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive
remedy shall be, at 3M’s option,to replace or repair the 3M product or refund the purchase price of the 3M product. Except where
prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether direct, indirect, special,
incidental or consequentialregardless of the legal theory asserted.