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ISO9001:2000
GE Consumer & Industrial
MultiLink ML600
Ethernet Communications Switch
Instruction Manual
Firmware Revision 1.0.x
Manual P/N: 1601-0222-A2
Manual Order Code: GEK-113040A
Copyright © 2006 GE Multilin
GE Multilin
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: (905) 294-6222 Fax: (905) 201-2098
Internet: http://www.GEmultilin.com
*1601-0222-A2*
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GE Multilin's Quality
Management System is
registered to ISO9001:2000
QMI # 005094
UL # A3775
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These instructions do not purport to cover all details or variations in equipment nor provide
for every possible contingency to be met in connection with installation, operation, or
maintenance. Should further information be desired or should particular problems arise
which are not covered sufficiently for the purchaser’s purpose, the matter should be referred
to the General Electric Company.
To the extent required the products described herein meet applicable ANSI, IEEE, and NEMA
standards; but no such assurance is given with respect to local codes and ordinances
because they vary greatly.
© 2006 GE Multilin Incorporated. All rights reserved.
GE Multilin Multilink ML600 instruction manual for revision 1.0.x.
Multilink ML600 is a registered trademark of GE Multilin Inc.
The contents of this manual are the property of GE Multilin Inc. This documentation is
furnished on license and may not be reproduced in whole or in part without the permission
of GE Multilin. The content of this manual is for informational use only and is subject to
change without notice.
Part numbers contained in this manual are subject to change without notice, and should
therefore be verified by GE Multilin before ordering.
Part number: 1601-0222-A2 (November 2006)
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TOC TABLE OF CONTENTS
Table of Contents
1: INTRODUCTION GETTING STARTED ............................................................................................................1-1
I
NSPECTING THE PACKAGE AND PRODUCT ......................................................................1-1
ORDERING ..........................................................................................................................1-2
O
RDER CODES ..................................................................................................................... 1-2
SPECIFICATIONS ................................................................................................................1-3
T
ECHNICAL SPECIFICATIONS .............................................................................................. 1-3
E
NVIRONMENTAL SPECIFICATIONS .................................................................................... 1-4
P
HYSICAL SPECIFICATIONS .................................................................................................1-4
A
PPROVALS AND WARRANTY ............................................................................................ 1-4
2: PRODUCT
DESCRIPTION
OVERVIEW ...........................................................................................................................2-1
NTRODUCTION TO THE ML600 ........................................................................................ 2-1
I
D
ESIGN ASPECTS ................................................................................................................. 2-1
FEATURES AND BENEFITS ...............................................................................................2-3
F
RAME BUFFERING AND LATENCY .................................................................................... 2-3
A
DDITIONAL FEATURES AND BENEFITS ............................................................................2-3
APPLICATIONS ...................................................................................................................2-5
D
ESCRIPTION ........................................................................................................................ 2-5
W
INDMILL APPLICATION .................................................................................................... 2-5
I
NDUSTRIAL NETWORKING APPLICATION ......................................................................... 2-6
T
RANSPORTATION SURVEILLANCE SYSTEM ...................................................................... 2-6
3: INSTALLATION PREPARATION ....................................................................................................................3-1
L
OCATING THE ML600 ...................................................................................................... 3-1
ELECTRICAL INSTALLATION ...........................................................................................3-2
P
OWER REQUIREMENTS ...................................................................................................... 3-2
C
ONNECTING DC POWER .................................................................................................. 3-2
CONNECTING ETHERNET MEDIA ..................................................................................3-3
D
ESCRIPTION ........................................................................................................................ 3-3
C
ONNECTING TWISTED PAIR ............................................................................................. 3-3
C
ONNECTING ST-TYPE FIBER OPTICS (TWIST-LOCK) ...................................................... 3-3
C
ONNECTING SC-TYPE FIBER OPTICS (SNAP-IN) ............................................................ 3-4
C
ONNECTING SINGLE-MODE FIBER OPTICS .................................................................... 3-4
4: OPERATION FUNCTIONALITY ................................................................................................................4-1
TROUBLESHOOTING .........................................................................................................4-5
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL TOC–I
D
UAL-SPEED AND SWITCHING FUNCTIONALITY ............................................................. 4-1
S
WITCHING, FILTERING AND FORWARDING .................................................................... 4-1
A
DDRESS LEARNING ............................................................................................................ 4-2
A
UTO-CROSS (MDIX), AUTO-NEGOTIATION, AND SPEED SENSING ............................. 4-2
S
TATUS LEDS ...................................................................................................................... 4-2
A
LARM CONTACT ................................................................................................................. 4-2
P
OWER BUDGET CALCULATIONS WITH FIBER MEDIA .................................................... 4-3
O
VERVIEW ............................................................................................................................ 4-5
B
EFORE CALLING FOR ASSISTANCE .................................................................................. 4-5
W
HEN CALLING FOR ASSISTANCE .................................................................................... 4-5
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TABLE OF CONTENTS
5: MISCELLANEOUS REVISION HISTORY ...........................................................................................................5-1
R
ELEASE DATES ...................................................................................................................5-1
C
HANGES TO THE MANUAL ................................................................................................ 5-1
CONFORMANCE STATEMENTS ......................................................................................5-2
FCC RFI S
TATEMENT ......................................................................................................... 5-2
WARRANTY .........................................................................................................................5-3
INDEX
TOC–II MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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GE Consumer & Industrial
Multilin
1.1 Getting Started
Multilink ML600
Ethernet Communications Switch
Chapter 1: Introduction
Introduction
1.1.1 Inspecting the Package and Product
Examine the shipping container for obvious damage prior to installing this product; notify
the carrier of any damage that you believe occurred during shipment or delivery. Inspect
the contents of this package for any signs of damage and ensure that the items listed
below are included.
This package should contain:
• MultiLink ML600 Ethernet Switch
• External AC adapter (for ML600-AC-** units)
• Set of metal panel mounting clips and screws (2 each)
Remove the items from the shipping container. Be sure to keep the shipping container
should you need to re-ship the unit at a later date.
In the event there are items missing or damaged, contact the party from whom you
purchased the product. If the unit needs to be returned, please use the original shipping
container if possible. Refer to Troubleshooting on page 4–5, for specific return procedures.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 1–1
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INTRODUCTION CHAPTER 1: INTRODUCTION
1.2 Ordering
1.2.1 Order Codes
The following table illustrates the order codes for the MultiLink ML600 Ethernet Switch.
Table 1–1: ML600 order codes
ML600 – * – *
Base unit ML600 ||MultiLink ML600 Ethernet Switch
Port
mounting
Modules B1 6 × RJ45 10/100 Mb copper
AC | External AC adapter
24 | 24 V DC power supply
48 | 48 V DC power supply
B2 2 × 100Base-F ST mm fiber and 4 × RJ45 10/100 Mb copper
B3 2 × 100Base-F SC mm fiber and 4 × RJ45 10/100 Mb copper
B4 2 × 100Base-F SC sm fiber and 4 × RJ45 10/100 Mb copper
1–2 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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CHAPTER 1: INTRODUCTION INTRODUCTION
1.3 Specifications
1.3.1 Technical Specifications
PERFORMANCE
Ethernet (10 Mb):.............................................14880 pps
Fast Ethernet (100 Mb):................................148,800 pps
Data rate:...........................................................10 Mbps and 100 Mbps
Path delay value:............................................ 50 BT on all ports
LLL (Link Loss Learn): ....................................factory default activated on ports 1 and 2 (allow to flush
the internal address buffer, and qualify to use with STP
and RSTP for faster recovery in ring topology)
RELIABILITY
MTBF:....................................................................over 15 years, Telcordia (Bellcore) method
NETWORK STANDARDS AND COMPLIANCE
100 Mb: ...............................................................Ethernet IEEE 802.3u, 100Base-TX, 100Base-FX
10 Mb:..................................................................Ethernet IEEE 802.3, 10Base-T
Auto-sensing for speed:..............................IEEE 802.3u
PACKET-PROCESSING BETWEEN DOMAINS
Filter and forward rate: ...............................14880 pps maximum (at 10 Mbps)
148800 pps maximum (at 100 Mbps)
Processing type:..............................................store and forward, non-blocking
Auto-learning:..................................................2K address table
Address buffer age-out time: ..................300 seconds
Packet buffers memory:..............................128 KB, dynamically shared on all domains
Latency (not including packet time):
5 ms (100 to 10 Mbps)
15 ms (10 to 100 Mbps)
MAXIMUM ETHERNET SEGMENT (OR DOMAIN) LENGTHS
10Base-T (Unshielded twisted pair): .............100 m (328 ft.)
100Base-TX (CAT 5 UTP): .....................................100 m (328 ft.)
100Base-FX, half-duplex (multi-mode): ......412 m (1350 ft.)
100Base-FX, full-duplex (multi-mode): ........2 km (6562 ft.)
100Base-FX, half-duplex (single-mode): ....412 m (1350 ft.)
100Base-FX, full-duplex (single-mode): ......18+ km
PORT CONNECTORS
RJ45 ports:.........................................................100Base-TX and 10Base-T with auto-cross (MDIX);
shielded 8-pin female connectors for shielded (STP) and
unshielded (UTP) CAT. 3, 4, and 5 cable
Fiber ports: ........................................................100Base-FX with multi-mode SC or ST, or single mode SC
connectors (factory settings default to full-duplex)
LED INDICATORS
POWER: ...............................................................steady ON when power applied
10/100:................................................................steady ON for 100 Mbps;
LK/ACT:................................................................steady ON for LINK (LK) with no traffic;
F/H:........................................................................steady ON for full-duplex;
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 1–3
OFF for 10 Mbps (copper ports only)
BLINKING indicates port is transmitting/receiving (ACT)
OFF for half-duplex (fiber port only)
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INTRODUCTION CHAPTER 1: INTRODUCTION
ALARM RELAY
Internal 60 VA relay contact: ...................open for power off
closed for power on (hardware).
POWER SUPPLY
These products are to be supplied by a listed, direct plug-in power unit, marked “Class 2”, or a
listed ITE power supply, marked “LPS”, which has suitably rated output voltage (i.e. 24 or
48 V DC), and suitably rated output current (i.e. 100 to 500 mA). When connected to a 48 V DC
centralized source, these products shall be provided with a listed 5 A DC fuse in the supply
circuit.
Input (DC units):...............................................10 to 36 V DC for 24 V DC unit
30 to 60 V DC for 48 V DC unit
Input (AC units).................................................6 ft. AC power cord to IEC 320 connector on 100 to
240 V AC at 47 to 63 Hz external power adapter (output
of 12 V DC, 1.25 A)
Power consumption:.....................................7.0 W typical, 9 W maximum
1.3.2 Environmental Specifications
OPERATING ENVIRONMENT
Ambient temperature: .................................long term per agency tests (UL): –13 to 140°F (–25 to
60°C)
short term per IEC type tests: –40 to 149°F (–40 to 85°C)
Storage temperature: –40 to 160°F (–40 to 85°C)
Ambient relative humidity: ........................5% to 95% (non-condensing)
Cold start:...........................................................to –20°C
Altitude:...............................................................–200 to 5000 ft. (–60 to 1520 m)
NEBS:....................................................................NEBS compliance, including vibration, shock, and altitude
1.3.3 Physical Specifications
PACKAGING)
Enclosure: .........................................................rugged sheet metal (steel)
Dimensions:.......................................................3.7 in. × 3.0 in. × 1.7 in. (H × W × D)
Weight:................................................................13 oz. (370 g) for unit
1.3.4 Approvals and Warranty
APPROVALS
UL:..........................................................................UL listed (UL60950), cUL, CE;
FCC:.......................................................................emissions meet FCC part 15 class A
NEBS:....................................................................level 3
ETSI:.......................................................................certified for carrier central offices
IEEE: ......................................................................IEEE P1613 environmental standard for electric power
IEC:.........................................................................IEC61850 EMC and operating conditions class C for
9.4 cm × 7.6 cm × 4.3 cm (H × W × D)
5.8 oz. (165 g) for AC adapter
substations
power substations
1–4 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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CHAPTER 1: INTRODUCTION INTRODUCTION
WARRANTY
24 months from date of shipment
Manufactured in USA
GE Multilin reserves the right to change specifications, performance, characteristics, and/or
model offerings without notice.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 1–5
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INTRODUCTION CHAPTER 1: INTRODUCTION
1–6 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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GE Consumer & Industrial
Multilin
2.1 Overview
Multilink ML600
Ethernet Communications Switch
Chapter 2: Product Description
Product Description
2.1.1 Introduction to the ML600
The MultiLink ML600 Ethernet Switch is designed as an Ethernet edge solution in heavyduty industrial, military, and un-controlled temperature applications, as well as an
economical solution for the growing requirements of managed networks. The ML600
series, a six-port versatile family of compact edge switches, loaded with factory
configurable fiber and AC/DC power options, alarm terminal block, and innovative
packaging is ready to serve the needs of edge-of-the network applications.
The ML600 switches have a wide breadth of port configurability and f iber port type
options: six 10/100 copper ports or four 10/100 copper ports and two 100 Mb fiber ports.
The ML600 is a heavy-duty switch with extended temperature operation ranges for
hardened factory-floor applications. The breadth of models and selection of fiber ports
offers the best price-to-value ratio for each user and installation. The compact package is
ideal for network edge installations, and can be DIN-rail mounted to suit any application.
The MultiLink ML600 switches include a Link Loss Learn™ (LLL) feature to qualify for
redundant and self-healing managed network structures. The LLL feature allows the
ML600 switches to flush internal address buffers in milliseconds to permit quick changes in
LAN packets flow, allowing the reconfiguration signal to pass down the line to other ring
switches in the redundant structure for faster recovery. The ML600 switches, combined
with other MultiLink managed switches running STP/RSTP, can often provide high
availability redundant LANs at economical cost.
2.1.2 Design Aspects
The MultiLink ML600 Ethernet Switch is designed for factory floor applications. The ML600
models are built with high-grade components and constructed using special thermal
techniques and a metal case for heavy duty industrial jobs. In addition to a hardened AC
power option and jack, terminals for internal DC power are available for 24 or 48 V DC. The
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 2–1
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PRODUCT DESCRIPTION CHAPTER 2: PRODUCT DESCRIPTION
unit has an ambient temperature rating of –25 to 60°C is for industrial use. No internal air
flow is required for cooling, providing resistance to dust , dirt, moisture, smoke, and insects.
Mounting options include stand-alone panel-mounting, DIN-Rail, or rack-mount tray.
FIGURE 2–1: MultiLink ML600 switch
The ML600 includes a hardware operated alarm terminal block for providing extra
reliability to the unit. The Alarm feature allows the ML600 user to be aware and monitor
any internal power failure. Refer to Alarm Contact on page 4–2 for additional details.
The front of the unit contains one of the following port combinations:
• six 10/100 Mb copper ports
• four 10/100 Mb copper ports and two 100 Mb fiber ports
The RJ45 ports support auto-cross (MDIX) operation under auto-negotiation mode only.
The ML600 provides switching among the four 10/100 auto-negotiating copper ports and
two 100Mb fiber ports, which may be multi-mode SC or ST, or single-mode SC. The ML600
fiber options and temperature ratings provide many networking options and solutions in a
very small footprint.
Two sets of LEDs indicate the port operating status. These are located on the top and front
for viewing advantage while rack-mounted. Link and Activity (LK/ACT) LEDs indicate that
the media cables are connected correctly and indicate network traffic by blinking. The LK/
ACT LEDs are repeated on the front as 1 to 6 (port 1 to port 6), and on the side as LA1 to
LA6. Another set of LEDs on the front (10/100 and F/H) indicate the data rate and duplex
mode for ports 1 and 2. The 10/100 LED indicates the speed for copper ports, whereas the
F/H LED indicates full and half-duplex for fiber ports only.
There is also a power LED to indicate when the unit is turned ON. The fiber ports on the
ML600 are multi-mode or single-mode with an SC or ST connector.
The external DC connector and/or “jack” and the internal DC input terminal is provided on
the rear of the unit.
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CHAPTER 2: PRODUCT DESCRIPTION PRODUCT DESCRIPTION
2.2 Features and Benefits
2.2.1 Frame Buffering and Latency
The ML600 is store-and-forward switch. Each frame (or packet) is loaded into the switch
memory and inspected before forwarding can occur. This technique ensures that all
forwarded frames are of a valid length and have the correct CRC (i.e., they are good
packets). This eliminates propagation of bad packets, enabling all of the available
bandwidth to be used for valid information.
While other switching technologies such as “cut-through” or “express” impose minimal
frame latency, they also permit bad frames to propagate to the Ethernet network. The
“cut-through” technique permits collision fragment frames, which are a result of late
collisions, to be forwarded – which add to the network traffic. There is no way to filter
frames with a bad CRC (the entire frame must be present in order for CRC to be calculated).
Since collisions and bad packets are more likely when traffic is heavy, store-and-forward
switch technology enables more bandwidth to be available for good packets when the
traffic load is greatest.
To minimize the possibility of dropping frames on congested ports, each ML600
dynamically allocates buffer space from a 128 KB memory pool, ensuring that heavily used
ports receive very large buffer space for packet storage (many other switches have their
packet buffer storage space divided evenly across all ports, resulting in a small, fixed
number of packets to be stored per port; when the port buffer fills up, dropped packets
result). This dynamic buffer allocation provides the capability for the maximum resources
of the ML600 to be applied to all traffic loads, even when the traffic activity is unbalanced
across the ports. Since the traffic on an operating network is constantly varying in packet
density per port and in aggregate density, the ML600 switches are constantly adapting
internally to provide maximum network performance with the least dropped packets.
When the ML600 detects that its free buffer queue space is low, it sends industry standard
(full-duplex only) PAUSE packets out to the devices sending packets to cause “flow control”.
This tells the sending devices to temporarily stop sending traffic, which allows a traffic
catch-up to occur without dropping packets. Then, normal packet buffering and
processing resumes. This flow-control sequence occurs in a small fraction of a second and
is transparent to an observer.
Another feature implemented in the ML600 is a collision-based flow-control mechanism
(when operating at half-duplex only). When the ML600 detects that its free buffer queue
space is low, it prevents more frames from entering by forcing a collision signal on all
receiving half-duplex ports in order to stop incoming traffic.
The latency (the time the frame spends in the switch before it is sent along or forwarded to
its destination) of the ML600 varies with the port-speed types. The length of the frame is
variable as it is with all store-and-forward switches. For 10 Mb-to-10 Mb, 10 Mb-to-100 Mb
or 100 Mb-to-10 Mb forwarding, the latency is 15 μs plus the packet time of 10 Mb. For
100 Mb-to-100 Mb forwarding, the latency is 5 μs plus the packet time of 100 Mb.
2.2.2 Additional Features and Benefits
• Full 10 or 100 Mb switching services for high performance Ethernet: The ML600
• Reduces network costs and provide an economical solution: The ML600 offers the
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 2–3
provides fast Ethernet switching on all ports. They perform high speed filter/forward
operations on the traffic, giving each port segment a full 10 Mb (or 100 Mb) of
bandwidth.
ideal solution to efficiently and inexpensively connect a twisted-pair and fiber network
with 10 or 100 Mb and expand in a convenient and economical way.
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PRODUCT DESCRIPTION CHAPTER 2: PRODUCT DESCRIPTION
• "Plug and play" installation and operation is transparent to software: The ML600
operates as a hardware switch, only forwarding packets from each domain that are
required on the other domains. Internal address tables are self-learning, enabling
users to change port connections or 10/100 domains without affecting operations.
• Two sets of LEDs for viewing status from any angle: Each ML600 is equipped with
two sets (front and side) of LEDs to provide status information when viewed at almost
any angle or mounting arrangement.
• Rugged metal case: The industrial grade ML600 has a robust design and is packaged
in a rugged metal enclosure to ensure high reliability and durability in industrial
applications.
• Efficient compact design for all purpose mounting: The ML600 features a compact
steel case with an external AC or DC power supply. The ML600 can be installed in small
spaces in cabinets, on table tops, in racks, walls, or DIN-Rail mounted and in trays.
• MDIX ports to eliminate cross-over cable while cascading: All ML600 switches
feature MDIX (auto-cross), which allows cascading with other switch hubs or media
edges supporting auto-negotiation, without using the cross-over cable.
• Hardware operated alarm terminal block: The alarm contact enables monitoring for
internal power failure, and provides extra reliability to the ML600.
• Link Loss Learn feature for faster recovery in redundant managed network: The LLL
feature qualifies the edge switches to actively work along with redundant network
structure and allow a faster recovery during ring break.
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CHAPTER 2: PRODUCT DESCRIPTION PRODUCT DESCRIPTION
2.3 Applications
2.3.1 Description
The MultiLink ML600 Ethernet Switch adapts well in almost any environment, enabling
quick network scalability and and cost effectively. The edge-of-the-network connectivity
solutions offered by the ML600 provides convenient, economical, and reliable solutions as
well as an active role on the managed redundant network setup for faster recovery. The
compact ML600 assists fast expanding network requirements by providing edge support
and reliability to the managed redundant network. The dual-speed and dual-media
functions support a mixed environment of 10 and 100Mbps and users with copper and
fiber media. The switched full duplex fiber port also provides high bandwidth and longer
distance support. The up-link feature of 100 Mb fiber on ports 1 and 2 enable easy
expansion for the on-going demand of Ethernet networks. The 10/100 Mbps autonegotiating MDIX copper ports and the breadth of 100 Mbps fiber ports enable easy
interfacing with existing cable plant and equipment .
The rugged case provides extra support in the harshest industrial environments. The LinkLoss-Learn feature to provides extra reliability to the redundant network and an
economical solution for faster recovery during a ring break.
2.3.2 Windmill Application
In this example, the central control and monitoring center station is required to collect
monitoring data from various windmills or send control commands to various windmills.
This need can be easily met using the economical MultiLink ML600 Ethernet Switch.
Additional functionality includes the ability to transfer data across large distances with
multi- or single-mode fiber while securing the LAN from EMI and wire tapping.
The ML600’s six ports in a small, reliable enclosure provide an effective solution to for
transferring real-time transactions from the windmill to the storage device in the control
room. The easily deployable through DIN-rail option and the dual power source of flexibility
along with flavor of fiber option for distance, the ML600 easily meets all the requirements
of windmill. The ML600 not only provides a reliable solution but also reduces operational
costs significantly.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 2–5
FIGURE 2–2: Windmill application
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PRODUCT DESCRIPTION CHAPTER 2: PRODUCT DESCRIPTION
2.3.3 Industrial Networking Application
In this industrial networking application, new PLC units are deployed on a network
expansion. Each PLC requires one (or two for redundancy) Ethernet ports to carry status
and control data to the control center. The ML600 provides a good solution with its multiple
options and hardened features. The two fiber ports are ideal for secure data
communications over long distances. Built with high-grade components, efficient cooling
techniques and no openings for dirt, the ML600 switches provide a very effective solution
for this need.
FIGURE 2–3: Network with multiple subnets example
2.3.4 Transportation Surveillance System
In this example, the MultiLink ML600 Ethernet Switch is deployed to serve as a secure
corporate or transportation surveillance system. CCTV cameras may be spread out over
many miles in temperature un-controlled locations and with pan, tilt and zoom (PTZ)
controlled through an Ethernet copper port. The ML600 provides two fiber segments for
secure long distance (2 to 40km) communication while being installed in temperature uncontrolled cabinets and allowing for AC or DC power options. The four copper ports at the
remote location provides access for other Ethernet equipment such as motion detectors or
will act as a test port for maintenance personnel with up-link for access to a central LAN
and central file servers.
The ideally suited ML600 with its diversified features, premium rated approvals and costeffective solution, make an ideal choice in many outdoor environments.
2–6 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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CHAPTER 2: PRODUCT DESCRIPTION PRODUCT DESCRIPTION
FIGURE 2–4: Transportation surveillance application
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 2–7
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PRODUCT DESCRIPTION CHAPTER 2: PRODUCT DESCRIPTION
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GE Consumer & Industrial
Multilin
3.1 Preparation
Multilink ML600
Ethernet Communications Switch
Chapter 3: Installation
Installation
3.1.1 Locating the ML600
The MultiLink ML600 Ethernet Switch operates in transparent half and full-duplex mode.
The store and forward switch takes care of network traffic and can be used as a useful,
economical tool to expand an existing network.
The compact and lightweight design of the ML600 allows it to be easily installed in almost
any location. A velcro strip may be used for mounting the unit on a vertical surface such as
a wall or cabinet, or for securing the unit on a table-top or shelf. Alternatively, metal
mounting clips and screws are included for a rugged and secure mounting in any
orientation.
Installation of the ML600 is a simple procedure. The installation location is dependent upon
the physical layout of the Ethernet network and associated cabling. Ensure the unit is
installed in a location that is easily accessible to an AC power outlet or the appropriate DC
source and where cooling is not inhibited. The green Power (PWR) LED must turn ON when
power is applied.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 3–1
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INSTALLATION CHAPTER 3: INSTALLATION
3.2 Electrical Installation
3.2.1 Power Requirements
The MultiLink ML600 Ethernet Switch is power-efficient and can work DC power or an
external AC power supply. The AC adapter input jack has a 2.5 mm plug, center positive,
with a 6 foot length of cord. Refer to Technical Specifications on page 1–3 for additional
details.
The ML600 is designed to be used with UL listed Class II power supplies.
The DC power option has a built-in terminal block for positive, negative, and ground. Detail
specifications on the 24 and 48 V DC options is available in Technical Specifications on
page 1–3.
When connected to a 48 V DC centralized source, the ML600 should only be installed only
NOTE
3.2.2 Connecting DC Power
in restricted access areas (dedicated equipment rooms, electrical closets or the like).
The DC terminal block is located on the rear of the unit and is equipped with three (3)
screw-down lead posts. The power terminals are identified as positive (+) and negative (–),
and they are floating inside the unit so that either of the terminals may be grounded. The
chassis is “earth” or ground (GND).
The connection procedure is straightforward. Simply insert the DC leads to the ML600
power terminals, positive (+) and negative (–) screws. The use of ground (GND) optional; it
connects to the ML600 chassis. Ensure that each lead is securely tightened from the top.
Always use a voltmeter to measure the voltage of the incoming power supply and
determine the positive or negative potential lead. The more positive potential lead will
NOTE
connect to the post labeled “+ve” and the rest to the “–ve”. The ground can be hooked up
last
When power is applied, the green PWR LED will illuminate.
3–2 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
Figure 3-1: DC power terminals
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CHAPTER 3: INSTALLATION INSTALLATION
3.3 Connecting Ethernet Media
3.3.1 Description
The MultiLink ML600 switches can be connected to two media types (fiber and copper) at
100Base-TX, 10Base-T and 100Base-FX. CAT 5 cables should be used when making
100Base-TX connections. When the ports are used as 10Base-T ports, CAT 3 may be used.
In either case, the maximum distance for unshielded twisted pair cabling is 100 m (328 ft .).
For 10Base-FL or 100Base-FX multi-mode fiber, 50/125 or 62.5/125 micron cabling can be
used. For single-mode fiber, 9/125 micron cabling should be used. Fiber cabling supports
much longer cable distance and higher bandwidths compared to copper wiring.
The supported media are summarized below.
Table 3–1: Supported Ethernet media
Media IEEE standard Connector
Twisted-pair (CAT 3 or 5) 10Base-T RJ45
Twisted-pair (CAT 5) 100Base-TX RJ45
Fiber (Multi-mode) 100Base-FX ST, SC
Fiber (Single-mode) 100Base-FX SC, LC
It is recommended to use high quality CAT 5 cables (which work for both 10 and 100 Mbps)
whenever possible to provide flexibility in a mixed-speed network, since the ML600 switch
NOTE
ports are auto-sensing for 10 and 100 Mbps. The auto-cross function does not operate if
the port is fixed or not supporting auto-negotiation.
3.3.2 Connecting Twisted Pair
The following procedure describes how to connect 10Base-T or 100Base-TX twisted pair
cables to the RJ45 port. The procedure is identical for both unshielded and shielded
twisted pair cables.
Z Using standard twisted pair media, insert either end of the cable
with an RJ45 plug into the RJ45 connector of the port .
Even though the connector is shielded, either unshielded or
shielded cables may be used.
Z Connect the other end of the cable to the corresponding device.
Z Use the LINK LED to ensure proper connectivity.
The LED will be illuminated when the unit is powered and
connection is established. If the LINK LED is off, ensure that the
cable is connected properly and that the device on the other end is
powered up and is not defective.
Z If the LINK LED is not illuminated for port # 1, move the switch
which has a cross-over or up-link for linking to another hub or
switch.
3.3.3 Connecting ST-type Fiber Optics (twist-lock)
The following procedure applies to installations using ST-type fiber connectors.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 3–3
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INSTALLATION CHAPTER 3: INSTALLATION
Z Before connecting the cable, remove the protective dust caps from
the tips of the fiber connectors.
Save these dust caps for future use.
Z Wipe clean the ends of the connectors with a soft cloth or lint-free
lens tissue dampened in alcohol.
Ensure the connectors are clean before proceeding.
One strand of the duplex fiber optic cable is coded using color bands at regular intervals.
The color-coded strand must be used on the associated ports at each end of the fiber optic
NOTE
segment.
Z Connect the transmit (TX) port on the ML600 to the receive (RX) port
of the remote device.
Begin with the color-coded strand for this first TX-to-RX
connection.
Z Connect the receive (RX) port on the ML600 to the transmit (TX) port
of the remote device.
Use the non-color coded fiber strand.
The LINK LED at the fiber connector will illuminate when a proper connection has been
established and when power is ON. The normal cause of the LINK LED not illuminating after
cable connection is improper cable polarity. Swap the fiber cables at the fiber connector to
remedy this situation.
3.3.4 Connecting SC-type Fiber Optics (snap-in)
To connect fiber media to SC connectors,
Z Snap on the two square male connectors into the SC female jacks
of the fiber connector until it clicks and secures.
3.3.5 Connecting Single-mode Fiber Optics
When using single-mode fiber cable, be sure to use single-mode fiber port connectors.
Single-mode fiber cable has a smaller diameter than multi-mode fiber cable (9/125
microns for single-mode versus 50/125 or 62.5/125 microns for multi-mode, where xx/xx
are the diameters of the core and the core plus the cladding respectively). Single-mode
fiber allows full bandwidth at longer distances, about 20 km with multi-mode SC.
The same procedures as for multi-mode fiber apply to single-mode fiber connectors.
Follow the steps listed in Connecting ST-type Fiber Optics (twist-lock) on page 3–3.
3–4 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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GE Consumer & Industrial
Multilin
4.1 Functionality
Multilink ML600
Ethernet Communications Switch
Chapter 4: Operation
Operation
4.1.1 Dual-speed and Switching Functionality
The MultiLink ML600 Ethernet Switch provides SIX switched ports with combination of fiber
and copper or copper only. The architecture supports a dual-speed switching
environment, with standard auto-negotiation capability.
The switched RJ45 ports are full or half-duplex, auto-sensing for mode and speed, and
auto-cross for plug polarity (see Auto-cross (MDIX), Auto-negotiation, and Speed Sensing
below). When the connected device is 10 Mbps, the ML600 obeys all the rules of 10 Mbps
Ethernet configurations. The 10 Mbps users can “communicate” with 100 Mbps users as
well as other 10 Mbps users through the switch. Similarly, the 100 Mbps traffic obeys the
rules of 100 Mbps Ethernet, and can communicate with 10 Mb and 100 Mb users. The
ML600 is a plug-and-play device. There is no software configuration required for
installation or maintenance, even for the LLL ports. The internal functions of both are
described below.
4.1.2 Switching, Filtering and Forwarding
Each time a packet arrives on one of the switched ports, the decision is taken to either filter
or to forward the packet. Packets whose source and destination addresses are on the
same port segment will be filtered, constraining them to that one port and relieving the
rest of the network from having to process them. A packet whose destination address is on
another port segment will be forwarded to the appropriate port, and will not be sent to the
other ports where it is not needed. Traffic needed for maintaining the un-interrupted
operation of the network (such as occasional multi-cast packets) are forwarded to all
ports.
The ML600 operates in the store-and-forward switching mode, which eliminates bad
packets and enables peak performance when there is heavy traffic on the network.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 4–1
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OPERATION CHAPTER 4: OPERATION
4.1.3 Address Learning
All ML600 units have address table capacities of 4K node addresses suitable for use in
larger networks. They are self-learning, so as nodes are added, removed or moved from
one segment to another, the ML600 automatically keeps up with node locations.
An address-aging algorithm causes least-used addresses to fall out in favor of frequentlyused addresses. To reset the address buffer, recycle the power supply.
4.1.4 Auto-cross (MDIX), Auto-negotiation, and Speed Sensing
The RJ45 ports independently support auto-cross (MDI or MDIX) in auto-negotiation mode
and work properly when the other connected device also supports auto-negotiation. No
cross-over cable is required while using the auto-negotiation port at both ends. The ports
perform auto-cross selection only during auto-negotiation, and it will not take effect if the
port is in fixed mode on the other end. Operation is according to the IEEE 802.3u standard.
Auto-negotiation takes place when a RJ45 cable connection is made and a LINK is
enabled. The ML600 advertises its capability for 10 or 100 Mbps and full/half-duplex mode.
Similarly, the device at the other end of the cable should advertise/respond and both sides
agree to the speed and mode being used. Depending upon the connected device, this will
result in agreement to operate at either 10 or 100 Mbps, in full or half-duplex mode.
4.1.5 Status LEDs
The following status LEDs are included:
On the copper models, the 10/100 LEDs applies to copper ports only. For models with fiber,
the F/H applies to the fiber port only.
NOTE
4.1.6 Alarm Contact
The alarm contacts feature provides normally closed (NC) contacts for one set of status
monitoring wires at the green terminal block. The terminal block for alarm contacts is part
of the power input panel; the DC power input connection is in the same panel.
• PWR: Power LED, ON when external power is applied to the unit.
• LK/ACT: Steady ON for LINK with no traffic, blinking for port activity. The LINK LED
will turn off in the event connectivity is lost between the ends of the twisted pair
segment or a loss of power occurs in the unit or remote device. The Link ports are
also represented by LA1, LA2, LA3,… LA6 (steady-on or steady-off indicates no
receive activity).
• 100/10: Speed LED, ON when the speed is 100 Mbps, OFF when the speed is
10 Mbps (copper only).
• F/H: Full/half-duplex LED, ON when the port is running full-duplex, OFF for half-
duplex (fiber only).
4–2 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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CHAPTER 4: OPERATION OPERATION
FIGURE 4–1: Alarm contact terminal block
The NC alarm contact is held closed when there is power on the main board inside of the
ML600. This provides a “hardware operated alarm” since the NC contacts will open when
internal power is lost, either from an external power down condition or by the failure of the
internal power supply.
Take note of the following aspects of the alarm contacts:
1. The two-position terminal block is provided next to the DC power input, as
shown above.
2. The alarm relay contact is hardware operated.
3. By default, the alarm relay contact is NC (normally closed). It will open if there
is any loss of power to the electronics inside of the unit.
4.1.7 Power Budget Calculations with Fiber Media
Receiver sensitivity and transmitter power are the parameters necessary to compute the
power budget. To calculate the power budget of different fiber media installations using
MultiLink products, the following equations should be used:
OPB P
where: OPB = optical power budget
= transmitter output power
P
T
P
= Receiver Sensitivity
R
The worst case OPB is as follows:
OPB
worst
The worst-case distance is calculated as follows:
The cable loss in dB/km is defined in the following table:
OPB 1dB (LED aging)– 1dB (insertion loss)–=
distance
worst
–=
tmin()PRmin()
worst-case OPB (in dB)
--------------------------------------------------------=
cable loss (in dB/km)
(EQ 4.1)
(EQ 4.2)
(EQ 4.3)
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 4–3
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OPERATION CHAPTER 4: OPERATION
Table 4–1: Cable losses
Cable size Mode Cable loss
62.5 / 125 μmmulti-mode 2.8 dB/km
50 / 125 μmmulti-mode 2.8 dB/km
100 / 140 μmmulti-mode 3.3 dB/km
9 / 125 μm single-mode 0.5 dB/km
0.4 dB/km (LXSC25)
0.25 dB/km (LXSC40)
0.2 dB/km (LXSC70)
The data in Power budget values for various modules on page 4–4 has been collected to
provide guidance to network designers and installers.
The use of either multi-mode or single-mode fiber to operate at 100 Mbps speed over long
distances (i.e., in excess of 400 m) can be achieved only if the following are applied:
1. The 100 Mb fiber segment must operate in full-duplex (FDX) mode (i.e. the fullduplex (factory default).
2. The worst-case OPB of the fiber link must be greater than the fiber cable's
passive attenuation, where attenuation is the sum of cable loss, LED aging
loss, insertion loss, and safety factor.
Table 4–2: Power budget values for various modules
Module Speed Mode fdx (hdx) λ Size P
B2, B3 100 Mb FX multi 2 (0.4) km 1300 nm 62.5/125 μm
50/125 μm
B4 100 Mb FX single 18+ (0.4) km 1300 nm 9/125 μm -15dB -31dB 14dB 28km 17.5dB 35km
T
-20 dB-
23.5 dB
PROPB
-31 dB
-31 dB
worstdworst
9.0 dB
5.5 dB
3.0 km
2.0 km
OPB
typdtypical
14 dB
12 dB
5km
4km
4–4 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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CHAPTER 4: OPERATION OPERATION
4.2 Troubleshooting
4.2.1 Overview
All MultiLink Ethernet products are designed to provide reliability and consistently high
performance in all network environments. The installation of a ML600 is a straightforward
procedure (see chapter 2 for details)
Should problems develop during installation or operation, this section is intended to help
locate, identify and correct these types of problems. Please follow the suggestions listed
below prior to contacting your supplier. However, if you are unsure of the procedures
described in this section or if the ML600 is not performing as expected, do not attempt to
repair the unit; instead contact your supplier for assistance or contact GE Multilin.
4.2.2 Before Calling for Assistance
1. If difficulty is encountered when installing or operating the unit, refer to
chapter 2. Also ensure that the various components of the network are
interoperable.
2. Check the cables and connectors to ensure that they have been properly
connected and the cables/wires have not been crimped or in some way
impaired during installation (about 90% of network downtime can be
attributed to wiring and connector problems.)
3. If the problem is isolated to a network device other than the ML600, it is
recommended that the problem device be replaced with a known good
device. Verify whether or not the problem is corrected. If not, go to the next
step. If the problem is corrected, the ML600 and its associated cables are
functioning properly.
4. If the problem continues after completing the previous step, contact GE
Multilin.
4.2.3 When Calling for Assistance
Please be prepared to provide the following information.
1. A complete description of the problem, including the following: the nature and
duration of the problem, situations when the problem occurs, the components
involved in the problem, and any particular application that appears to create
the problem.
2. An accurate list of GE product model(s) involved, with serial number(s). Include
the date(s) that you purchased the products from your supplier.
3. It is useful to include other network equipment models and related hardware,
including personal computers, workstations, terminals and printers; plus, the
various network media types being used.
4. A record of changes that have been made to your network configuration prior
to the occurrence of the problem. Any changes to system administration
procedures should all be noted in this record.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 4–5
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OPERATION CHAPTER 4: OPERATION
4–6 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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GE Consumer & Industrial
Multilin
Multilink ML600
Ethernet Communications Switch
Chapter 5: Miscellaneous
Miscellaneous
5.1 Revision History
5.1.1 Release Dates
Manual Revision Release Date
GEK-113040 1.0x June 3, 2005
GEK-113040A 1.0.x November 17, 2006
5.1.2 Changes to the Manual
Section Description
1.3.1 Change Maximum Ethernet segments to 18+ Km
General Manual revised to A2
Table 5–1: Release dates
Table 5–2: Changes to Manual Revision A2
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 5–1
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MISCELLANEOUS CHAPTER 5: MISCELLANEOUS
5.2 Conformance Statements
5.2.1 FCC RFI Statement
Federal Communications Commission (FCC)
Radio Frequency Interference Statement
This equipment generates, uses and can radiate frequency energy and if not installed and
used properly, that is in strict accordance with the manufacturer's instructions, may cause
interference to radio communication. It has been tested and found to comply with the
limits for a Class A computing device in accordance with the specifications in Subpart J of
Part 15 of FCC rules, which are designed to provide reasonable protection against such
interference when operated in a commercial environment. Operation of this equipment in
a residential area is likely to cause interference, in which case the user at their own
expense will be required to take whatever measures may be required to correct the
interference.
5–2 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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CHAPTER 5: MISCELLANEOUS MISCELLANEOUS
5.3 Warranty
General Electric Multilin (GE Multilin) warrants each device it manufactures to be free from
defects in material and workmanship under normal use and service for a period of 24
months from date of shipment from factory.
In the event of a failure covered by warranty, GE Multilin will undertake to repair or replace
the device providing the warrantor determined that it is defective and it is returned with all
transportation charges prepaid to an authorized service centre or the factory. Repairs or
replacement under warranty will be made without charge.
Warranty shall not apply to any device which has been subject to misuse, negligence,
accident, incorrect installation or use not in accordance with instructions nor any unit that
has been altered outside a GE Multilin authorized factory outlet.
GE Multilin is not liable for special, indirect or consequential damages or for loss of profit or
for expenses sustained as a result of a device malfunction, incorrect application or
adjustment.
For complete text of Warranty (including limitations and disclaimers), refer to GE Multilin
Standard Conditions of Sale.
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 5–3
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MISCELLANEOUS CHAPTER 5: MISCELLANEOUS
5–4 MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
Page 33
INDEX
Index
A
ALARM RELAY
specifications ................................................................................................... 1-4
APPLICATIONS................................................................................................... 2-5
APPROVALS ....................................................................................................... 1-4
B
C
CABLE LOSSES .................................................................................................. 4-4
CHANGES TO THE MANUAL ............................................................................. 5-1
D
DESIGN ASPECTS .............................................................................................. 2-1
E
ENVIRONMENTAL SPECIFICATIONS ................................................................ 1-4
ETHERNET
connecting........................................................................................................ 3-3
power budget calculations ............................................................................... 4-3
specifications ................................................................................................... 1-3
F
FCC APPROVAL ................................................................................................. 1-4
FEATURES .......................................................................................................... 2-3
FILTERING.......................................................................................................... 4-1
FORWARDING ................................................................................................... 4-1
FUNCTIONALITY ................................................................................................ 4-1
G
H
I
IEEE APPROVAL ................................................................................................. 1-4
INSTALLATION................................................................................................... 3-1
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL I–I
Page 34
INDEX
J
K
L
LEDS
functionality ......................................................................................................4-2
M
N
O
ORDER CODES....................................................................................................1-2
P
PACKAGING ........................................................................................................1-4
POWER BUDGET CALCULATIONS ....................................................................4-3
POWER SUPPLY
specifications ....................................................................................................1-4
PRODUCT DESCRIPTION ...................................................................................2-1
Q
R
REVISION HISTORY ............................................................................................5-1
S
SPECIFICATIONS ................................................................................................1-3
SWITCHING FUNCTIONALITY ...........................................................................4-1
T
TROUBLESHOOTING..........................................................................................4-5
U
UL APPROVAL.....................................................................................................1-4
UNPACKING THE SWITCH.................................................................................1-1
I–II MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
Page 35
INDEX
V
W
WARRANTY .......................................................................................... 1-1, 1-5, 5-3
XYZ
MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL I–III
Page 36
INDEX
I–IV MULTILINK ML600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
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