Transition Networks MIL-S4800 User manual

48-port 10/100TX + 1 SFP Gigabit Port and 1
10/100/1000BASET Port
Unmanaged Switch
MIL-S4800
User Manual

2
Rev. A2
2007-12-28
Regulatory Approval
- FCC Class A
- UL 1950
- CSA C22.2 No. 950
- EN60950
- CE
- EN55022 Class A
- EN55024
Canadian EMI Notice
This Class A digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numerique de la classe A respecte toutes les exigences du Reglement sur le materiel brouilleur du Canada.
European Notice
Products with the CE Marking comply with both the EMC Directive (89/336/EEC) and the Low Voltage Directive
(73/23/EEC) issued by the Commission of the European Community Compliance with these directives imply conformity to
the following European Norms:
EN55022 (CISPR 22) - Radio Frequency Interference
EN61000-X - Electromagnetic Immunity
EN60950 (IEC950) - Product Safety
Five-Year Limited Warranty
Transition Networks warrants to the original consumer or purchaser that each of it's products,
and all components thereof, will be free from defects in material and/or workmanship for a
period of five years from the original factory shipment date. Any warranty hereunder is
extended to the original consumer or purchaser and is not assignable.
Transition Networks makes no express or implied warranties including, but not limited to, any
implied warranty of merchantability or fitness for a particular purpose, except as expressly set
forth in this warranty. In no event shall Transition Networks be liable for incidental or
consequential damages, costs, or expenses arising out of or in connection with the
performance of the product delivered hereunder. Transition Networks will in no case cover
damages arising out of the product being used in a negligent fashion or manner.
Trademarks
The MiLAN logo and Transition Networks trademarks are registered trademarks of Transition Networks in the United
States and/or other countries.
To Contact Transition Networks
For prompt response when calling for service information, have the following information ready:
- Product serial number and revision
- Date of purchase
- Vendor or place of purchase
You can reach Transition Networks technical support at:
E-mail: [e-mail]
Telephone: [phone] x 200
Fax: [phone]
Transition Networks
6475 City West Parkway
Eden Prairie, MN 55344
United States of America
Telephone: [phone]
Fax: : [phone]
http://www.milan.com
info@ Transition.com
© Copyright 2007 Transition Networks

3
FCC Warning
This Equipment has been tested and found to comply with the limits for a Class- A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected
Consult the dealer or an experienced radio/TV technician for help
CE Mark Warning
This is a class-A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.

1
Introduction
The MIL-S4800 Switch is a multi-port Switch that can be used to build
high-performance switched workgroup networks. This switch is a
store-and-forward device that offers low latency for high-speed networking and is
targeted at workgroup, department or backbone computing environment. The
MIL-S4800 Switch has 48 auto-sensing 10/100Base-TX RJ-45 ports, 1
10/100/1000T port and 1 SFP port for higher connection speed.
Features
Confirm to IEEE802.3 10BASE-T, 802.3u 100BASE-TX,IEEE 802.3ab
1000Base-T IEEE802.3z Gigabit Fiber
48-port 10/100TX plus 1 10/100/1000T port and 1 SFP port
Switch Fabric up to 20Gbps
Non-Blocking Architecture
IEEE802.3x Flow Control
Flow Control with Full Duplex
Back Pressure with Half Duplex
2 x Gigabit uplink port
19” rack mount design
Package Contents
Unpack the contents of the MIL-S4800 Switch and verify them against the
checklist below:
(1) MIL-S4800 Switch
(1) Power Cord
(4) Four Rubber Pads

2
(1) User Manual
(1) Rack Mount Kit
MIL-S4800 Switch Four-Rubber Pads
Rack-mounted Kit Power Cord User Manual
Package Contents
Compare the contents of your MIL-S4800 Switch package with the standard
checklist above. If any item is missing or damaged, please contact the local dealer
for exchanging.
Hardware Description
This Section mainly describes the hardware of the MIL-S4800 Switch and gives a
physical and functional overview on the certain switch.
Physical Dimension
The MIL-S4800 Switch’s physical dimension is 440mm x 225mm x 44mm (W x D
x H).

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Front Panel
The Front Panel of the MIL-S4800 Switch consists of 48x 10/100Base-TX RJ-45
ports (Auto MDI/MDIX), 1 10/100/1000T port and 1 SFP port. The LED Indicators
are also located on the front panel of the Switch.
RJ-45 Ports (Auto MDI/MDIX): 48x 10/100 N-way auto-sensing for
10Base-T or 100Base-TX connections.
In general, MDI means connecting to another Hub or Switch while MDIX
means connecting to a workstation or PC. Therefore, Auto MDI/MDIX would
allow connecting to another switch or workstation without changing
non-crossover or crossover cabling.
Giga port: 1 10/1000/100T UTP port and 1 SFP port.
LED Indicators
The LED Indicators gives real-time information of systematic operation status.
The following table provides descriptions of LED status and their meaning.
LED indicators
LED Status Description
Green Power On
Power
OFF Power is not connected
Green The port is connecting with the device
LNK/ACT
Blink The port is receiving or transmitting data

4
OFF No device attached
Green The port is connecting with the device
Blink The port is receiving or transmitting data
LNK/ACT
(G1)
OFF No device attached
Yellow The port is operating in 1000M mode
Speed
(G1) OFF The port is operating in 10/100M mode or
no device attached
Green The port is connecting with device
Blink The port is transmitting or receiving the
data
LNK/ACT
(G2)
OFF No data transmitting or receiving
The Description of LED Indicators
Rear Panel
The 3-pronged power plug is located at the rear Panel of the MIL-S4800 Switch
as shown in Figure. The Switch will work with AC in the range of 100-240V and
Frequency of 50-60Hz/0.26A. The power plug includes a fuse that it can be
replaced when fuse is burned. If the power plug has problem on the powering,
please check the fuse first for sure.
The Rear Panel of MIL-S4800 Switch
Fuse spec:
Ceramic tube type
Ø5mm x 20mm
2A/250V(MAX)

5
Desktop Installation
Set the switch on a sufficiently large flat space with a power outlet nearby. The
surface where for putting switch should be clean, smooth, level and sturdy. Make
sure there is enough clearance around the switch to allow attachment of cables,
power cord and allow air circulation.
Attaching Rubber Pads
1. Make sure mounting surface on the bottom of the switch is grease and dust
free.
2. Remove adhesive backing from the Rubber Pads.
3. Apply the Rubber Pads to each corner on the bottom of the switch. These
footpads can prevent the switch from shock/vibration.
Rack-mounted Installation
The MIL-S4800 Switch comes with a rack-mount kit and can be mounted in an
EIA standard size, 19-inch Rack. The Switch can be placed in a wiring closet with
other equipment. Perform the following steps to rack mount the switch:
1. Position one bracket to align with the holes on one side of the switch and
secure it with the smaller bracket screws. Then attach the remaining bracket
to the other side of the switch.
2. After attached mounting brackets, position the MIL-S4800 switch in the rack
by lining up the holes in the brackets with the appropriate holes on the rack.
Secure the switch to the rack with a screwdriver and the rack-mounting
screws.
[Note] For proper ventilation, allow about at least 4 inches (10 cm) of clearance
on the front and 3.4 inches (8 cm) on the back of the Switch. This is especially
important for enclosed rack installation.

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Power On
Connect the power cord to the power socket on the rear panel of the Switch. The
other side of power cord connects to the power outlet. The internal power supply
of the switch works with AC voltage range of 100-240V and Frequency
50~60Hz./0.26A Check the power indicator on the front panel to see if power is
properly supplied.
Troubleshooting
This section is intended to help you solve the most common problems on the
MIL-S4800 Switch.
Incorrect connections
The switch port can auto detect straight or crossover cable when you link switch
with other Ethernet device. For the RJ-45 connector should use correct UTP or
STP cable, 10/100Mbps port use 2 pairs twisted cable and Gigabit 1000T port use
4 pairs twisted cable. If the RJ-45 connector is not correct pin on right position
then the link will fail. For fiber connection, please notice that fiber cable mode
and fiber module should be match.
Faulty or loose cables
Look for loose or obviously faulty connections. If they appear to be OK, make sure
the connections are snug. If that does not correct the problem, try a different
cable.

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Non-Standard cables
Non-Standard and miss-wired cables may cause numerous network collisions
and other network problem, and can seriously impair network performance. A
category 5-cable tester is a recommended tool for every 100Base-T network
installation.
RJ-45 ports: use unshielded twisted-pair (UTP) or shield twisted-pair ( STP )
cable for RJ-45 connections: 100 Category 3, 4 or 5 cable for 10Mbps
connections or 100 Category 5 cable for 100Mbps connections. Also be sure
that the length of any twisted-pair connection does not exceed 100 meters (328
feet). Gigabit port should use Cat-5 or cat-5e cable for 1000Mbps connections.
The length does not exceed 100 meters.
Improper Network Topologies
It is important to make sure have a valid network topology. Common topology
faults include excessive cable length and too many repeaters (hubs) between end
nodes. In addition, you should make sure that your network topology contains no
data path loops. Between any two ends nodes, there should be only one active
cabling path at any time. Data path loops will cause broadcast storms that will
severely impact your network performance.
Diagnosing LED Indicators
The switch can be easily monitored through panel indicators to assist in
identifying problems, which describes common problems user may encounter and
where you can find possible solutions.
If the power indicator does turn on when the power cord is plugged in, you may