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.
GE Multilin Multilink ML1200 instruction manual for revision 3.3x.
Multilink ML1200 is a registered trademark of GE Multilin Inc.
NEBS is a trademark of Telcordia Technologies
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: 1601-9095-A1 (June 2009)
Federal Communications Commission
Radio Frequency Interference Statement
This equipment generates, uses and can radiate frequency energy and if not installed and used properly
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.
Canadian Emissions Statement
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Electrical Safety requirements:
1.This product is to be installed Only in Restricted Access Areas (Dedicated Equipment Rooms, Electrical
Closets, or the like).
2.48 V DC products shall be installed with a readily accessible disconnect device in the building
installation supply circuit to the product.
3.This product shall be provided with a maximum 10 A DC Listed fuse or circuit breaker in the supply
circuit when connected to a 48 V centralized DC source.
4.The external power supply for DC units shall be a Listed, Direct Plug In power unit, marked Class 2, or
Listed ITE Power Supply, marked LP, which has suitably rated output voltage (i.e. 24 V DC or 48 V DC)
and suitable rated output current.
5.Product does not contain user replaceable fuses. Any internal fuses can ONLY be replaced by GE
Multilin.
TOCTABLE OF CONTENTS
Table of Contents
1: INTRODUCTIONGETTING STARTED ............................................................................................................................. 1-1
7: ACCESS USING RADIUSINTRODUCTION TO 802.1X ............................................................................................................ 7-1
PORT SETUP .........................................................................................................................................9-3
HISTORY ................................................................................................................................................. 17-8
APPENDIX AREVISION HISTORY ............................................................................................................................A-1
TOC–VIMULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
Digital Energy
Multilin
1.1Getting Started
Multilink ML1200
Managed Field Switch
Chapter 1: Introduction
Introduction
1.1.1Inspecting 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 ML1200 Managed Field Switch, base unit (configured with user-selected
port module options installed)
• 1 Set of two metal vertical mounting brackets, with screws to the case
• 1 Installation and User Guide (this manual)
• 1 Product Registration Card
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. To validate the product warranty,
please complete and return the enclosed Product Registration Card to GE Multilin as soon
as possible.
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 Section 6, Troubleshooting, for specific return procedures.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL1–1
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1.2Order Codes
ML1200-*-*-*-*-*- **
ML1200
ModuleSlot ASlot BSlot CSlot D
ML1200||||||Base Unit
Power Supply 250S|||||ML1200 250VDC Chassis
Modules |XX XXXX |None
Only with ML1200-48 modelsC2C2|||4 x 10/100 RJ-45 PoE-enabled ports (only with ML1200-48P models)
Weight: .......................................................................................................3 lbs. (1.3 kg)
MANAGEMENT CONSOLE CONNECTOR
Serial DB15 or RJ-45, see details at sec. 3.7
DC POWER SUPPLY (INTERNAL, FLOATING GROUND DESIGN)
12VDC Power Input nominal (range 8 to 18VDC
24VDC Power Input nominal (range 18 to 36VDC)
-48VDC Power Input nominal (range 36 to 60VDC)
125VDC Power Input nominal (range 88 to 150VDC)
250VDC Power Input nominal (range 160 to 300VDC)
Std. Terminal Block : “ -, GND, + ”
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POWER CONSUMPTION
35 watts worst case (for a fully loaded fiber model)
12 watts typical (for a small 4 port copper-only model)
DUAL DC POWER INPUT (OPTIONAL)
A Dual-Source option is available for the 12VDC, 24VDC, – 48VDC, and 125VDC models (not the
250VDC model). This provides for continuity of operation when either of the DC input sources is
interrupted. See Appendices B and C.
The Dual-Source Terminal Block is marked:..............................“ –A, -B, +A, +B ”
ML1200 MOUNTING
Vertical mounting normal. Suitable for wall or DIN-Rail mounting (ML1200)
TYPE TESTS
TESTREFERENCE STANDARDTEST LEVEL
Electrostatic DischargeEN61000-4-2Level 4
RF immunityEN61000-4-3Level 3
Fast Transient DisturbanceEN61000-4-4Level 3 & 4
Surge ImmunityEN61000-4-5Level 4
Conducted RF ImmunityEN61000-4-6Level 3
Power magnetic ImmunityIEC61000-4-8Level 2
Voltage Dip & interruptionIEC61000-4-11
0,40,70% dips,250/300cycle
interrupts
Environmental (Cold)DNV 2.4 -25 C
Environmental (Dry heat)DNV 2.470C
Relative Humidity CyclicDNV 2.42 day
Radiated & Conducted
Emissions
Radiated & Conducted
Emissions
CISPR22/ IEC60255-25Class A
FCC Part 15 Subpart BClass A
SafetyEN60950-1stanadard
HarmonicsEN61000-3-2
FlickerEN61000-3-3
Ingress ProtectionIEC60529IP20A
Sinusoidal VibrationDNV 2.4 1 to 4 G
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APPROVALS
Applicable Council DirectiveAccording to
CE ComplianceLow voltage directiveEN60950-1
EMC DirectiveEN61000-6-2, EN61000-6-4
North AmericacULusUL60950-1
C22.2 No. 60950-1
ISO
Manufactured under a registered
quality program
WARRANTY
Three years, per UL 60950 temperature rating.
Made in USA
ISO9001
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1.4Command Line Interface Firmware
1.4.1Console Connection
The connection to the console is accessed through the DB-9 RS232 connector on the
switch marked as the console port. This command line interface (or CLI) provides access to
the switch commands. It can be accessed by attaching a VT100 compatible terminal or a
PC running terminal emulation firmware to the console port.
USB-to-serial adapters are also available for computers that do not support native serial
ports but have access to USB ports.
The interface through the console or the console management interface (or CMI) enables
you to reconfigure the switch and to monitor switch status and performance.
Once the switch is configured with an IP address, the command line interface (or CLI) is
also accessible using telnet as well as the serial port. Access to the switch can be either
through the console interface or remotely over the network. Simultaneous access (that is,
through the console port as well as through the network) to the MultiLink ML1200
Managed Field Switch switch is not permitted.
The Command Line Interface (CLI) enables local or remote unit installation and
maintenance. The MultiLink ML1200 Managed Field Switch provides a set of system
commands which allow effective monitoring, configuration and debugging of the devices
on the network.
1.4.2Console Setup
Connect the console port on the switch to the serial port on the computer using the serial
cable listed above. The settings for the HyperTerminal firmware emulating a VT100 are
shown below. Make sure the serial parameters are set as shown (or bps = 38400, data bits
= 8, parity = none, stop bits = 1, flow control = none).
FIGURE 1–1: Serial Settings in HyperTerminal
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1.4.3Console Screen
Once the console cable is connected to the PC and the firmware configured, ML1200 legal
disclaimers and other text scrolls by on the screen.
The line interface prompt appears displaying the switch model number (e.g. ML1200>)
The switch has three modes of operation: operator (least privilege), manager, and
configuration. The prompts for the switches change as the switch changes modes from
operator to manager to configuration. The prompts are shown below with a brief
description.
• ML1200>
Operator Level - for running operations queries
• ML1200#
Manager Level - for setting and reviewing commands
• ML1200##
Configuration Level - for changing the switch parameter values
For additional information on default users, user levels and more, refer to section 1.4.8 - User Management.
1.4.4Logging In for the First Time
For the first time, use the default user name and passwords assigned by GE. They are:
•Username: manager
Password: manager
•Username: operator
Password: operator
We recommend you login as manager for the first time to set up the IP address as well as
change user passwords or create new users.
1.4.5Automatic IP Address Configuration
The ML1200 is operational immediately after it is powered up. The advanced management
and configuration capabilities of the ML1200 allows you to easily configure, manage, and
secure your devices and network.
Before starting, ensure you have the following items:
• RJ45 Ethernet cable
•PC with an Ethernet port
• Microsoft Internet Explorer 6.0 or higher
• Macromedia Flash Player 5.0 or higher (available from http://
Ensure both firmware components are installed before proceeding.
The ML1200 can search the network for commonly used services that can issue an IP
address. If the switch is connected to a network, the ML1200 uses the following process to
find an IP address.
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Note
If the ML1200 is not connected to a network, then proceed to Step 3 below. or use the
default IP address.
Step 1:
The ML1200 will scan the network for a DHCP server. If the server responds, the ML1200
will acquire and set the assigned IP address. To manage the switch, determine the
assigned IP address and enter as follows in Internet Explorer:
https://
<assigned_IP_address>
Ensure that https is entered, not http, and that there is connectivity (that is, you can ping
the switch).
Step 2:
If there is no response from a DCHP server, the ML1200 will query for a BOOTP server. If the
server responds, the ML1200 will acquire and set the assigned IP address. To manage the
switch, determine the assigned IP address and enter as follows in Internet Explorer:
https://
<assigned_IP_address>
Ensure that https is entered, not http, and that there is connectivity (that is, you can ping
the switch).
Step 3:
If there is no response from either a DCHP or BOOTP server, or if the switch is not
connected to a network, the switch will assign itself an IP address. The ML1200 will check
to see if IP address 192.168.1.2, with a network mask of 255.255.255.0, is free. If so, it will
assume these values. If this IP address is assigned to another device, the ML1200 will
repeat steps 1 through 3 to find a DCHP or BOOTP server or wait for the 192.168.1.2
address to become free.
Once connected, the browser will display a login prompt. The default login is:
•Username: manager
Password: manager
1.4.6Setting the IP Parameters Using Console Port
Note
To configure the Switch’s IP using EnerVista UR Setup software, refer to chapter 2 of this
manual,
To setup the switch, the IP address and other relevant TCP/IP parameters have to be
specified.
The IP address on the MultiLink ML1200 Managed Field Switch is set to 192.168.1.2 from
the factory. The switch is fully operational as a Layer 2 switch as a default. Setting a
default IP address can potentially cause duplicate IP address problem if multiple switches
are powered on and installed on the network. To manage the switch, an IP address has to
be programmed.
Before starting, please ensure that the IP address assigned to the switch is known or
contact your system/network administrator to get the IP address information. Follow the
steps listed below to configure the switch.
Z Ensure the power is off.
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Z Follow the steps described above for connecting the console cable
and setting the console firmware.
Z Power on the switch.
Z Once the login prompt appears, login as manager using default
password (manager).
Z Configure the IP address, network mask and default gateway as per
the IP addressing scheme for your network.
Z Set the manager password (this step is recommended; refer to the
following section).
Z Save the settings (without saving, the changes made will be lost).
Z Power off the switch (or a firmware reboot as discussed below).
Z Power on the switch - login with the new login name and password.
Z From the PC (or from the switch) ping the IP address specified for the
switch to ensure connectivity.
Z From the switch ping the default gateway specified (ensure you are
connected to the network to check for connectivity) to ensure
network connectivity.
This manual assumes the reader is familiar with IP addressing schemes as well as how net
# save
mask is used and how default gateways and routers are used in a network.
Reboot gives an opportunity to save the configuration prior to shutdown. For a reboot,
simply type in the command
reboot. Note that even though the passwords are not
changed, they can be changed later.
ML1200# reboot
Proceed on rebooting the switch? ['Y' or 'N'] Y
Do you wish to save current configuration? ['Y' or 'N'] Y
ML1200#
The ML1200 forces an answer by prompting with a “Y” or a “N” to prevent accidental
keystroke errors and loss of work.
The parameters can be viewed at any time by using the
show command. The show
command will be covered in more detail later in various sections throughout the
document.
The example below illustrates the basic setup parameters. You can use
show sysconfig commands to view setup parameters.
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show setup or
CHAPTER 1: INTRODUCTIONINTRODUCTION
ML1200# show setup
Version: ML1200 build 2.1.0 Nov 12 2007 11:10:13
MAC Address: 00:20:06:27:0a:e0
IP Address: 3.94.247.41
Subnet Mask: 255.255.252.0
Gateway Address: 3.94.244.1
CLI Mode: Manager
System Name: ML1200
System Description: 6 Port Modular Ethernet Switch
System Contact: multilin.tech@ge.com
System Location: Markham, Ontario
System ObjectId: 1.3.6.1.4.1.13248.12.7
ML1200# show sysconfig
System Name: ML1200
System Contact: multilin.tech@ge.com
System Location: Markham, Ontario
Boot Mode: manual
Inactivity Timeout(min): 120
Address Age Interval(min): 300
Inbound Telnet Enabled: Yes
Web Agent Enabled: Yes
Time Zone: GMT-05hours:00minutes
Day Light Time Rule: Canada
System UpTime: 0 Days 0 Hours 45 Mins 55 Secs
ML1200#
Some of the parameters in the MultiLink ML1200 Managed Field Switch are shown above.
The list of parameters below indicates some of the key parameters on the switch and the
recommendations for changing them (or optionally keeping them the same).
1.4.7Privilege Levels
Two privilege levels are available - manager and operator. Operator is at privilege level 1
and the manager is at privilege level 2 (the privilege increases with the levels). For example,
to set up a user for basic monitoring capabilities use lower number or operator level
privilege (level 1).
The Manager level provides all operator level privileges plus the ability to perform systemlevel actions and configuration commands. To select this level, enter the
name>
prompted.
For example, switching from an operator-level to manager-level, using the
command is shown below.
Note the prompt changes with the new privilege level.
Operator privileges allow views of the current configurations but do not allow changes to
the configuration. A “>” character delimits the operator-level prompt.
Manager privileges allow configuration changes. The changes can be done at the
manager prompt or for global configuration as well as specific configuration. A “#”
character delimits any manager prompt.
enable <user-
command at the Operator level prompt and enter the Manager password, when
enable <user-name>
enable
ML1200> enable manager
Password: *******
ML1200#
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1.4.8User Management
A maximum of five users can be added per switch. Users can be added, deleted or
changed from a manager level account. There can be more than one manager account,
subject to the maximum number of users on the switch being restricted to five.
To add a user, use the
add command as shown below. The user name has to be a unique
name. The password is recommended to be at least 8 characters long with a mix of upper
case, lower case, numbers and special characters.
add user=<name> level=<number>
The following example adds a user “peter” with manager-level privilege:
ML1200# user
ML1200(user)##
Enter User Password:******
Confirm New Password:******
add user=peter level=2
ML1200(user)##
To delete a user, use the delete command as shown below.
delete user=<name>
The following example deletes the user “peter”:
ML1200(user)## delete user=peter
Confirm User Deletion(Y/N): Y
User successfully deleted
ML1200(user)##
The syntax to modify a password is shown below:
passwd user=<name>
The following example changes the password for user “peter”.
ML1200(user)## passwd user=peter
Enter New Password:******
Confirm New Password :******
Password has been modified successfully
ML1200(user)##
The syntax to modify the privilege level for a specific user is shown below:
chlevel user=<name> level=<number>
The following example modifies the privilege level of user “peter” to Operator privileges.
ML1200(user)## chlevel user=peter level=1
Access Permission Modified
ML1200(user)##
The syntax to set the access privileges for telnet and Web services is shown below:
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1.4.9Help
Typing the help command lists the commands you can execute at the current privilege
level. For example, typing
ML1200> help
logout ping set
terminal telnet walkmib
Contextless Commands:
! ? clear
enable exit help
show whoami
alarm
ML1200>
Help for any command that is available at the current context level can be viewed by
typing help followed by enough of the command string to identify the command. The
following syntax applies:
help <command string>
For example, to list the help for the
ML1200# help set time
set time : Sets the device Time
Usage
set time hour=<0-23> min=<0-59> sec=<0-59> [zone=GMT[+/-]hh:mm]
ML1200#
The options for a specific command can be displayed by typing the command and
pressing enter. The following syntax applies:
command <Enter>
For example, the options for the
ML1200# show <Enter>
Usage
show active-stp
show active-snmp
show active-vlan
show address-table
show age
show alarm
show arp
show auth <config|ports>
show backpressure
show bootmode
--more--
Other ways to display help, specifically, with reference to a command or a set of
commands, use the TAB key. The following syntax applies:
<TAB>
<Command string> <TAB>
<First character of the command> <TAB>
For example, following the syntax listed above, the <TAB> key will list the available
commands in the particular privilege level:
ML1200> <TAB>
help at the Operator level shows the following:
set time command
show command are:
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?
alarm
clear
enable
exit
help
logout
ping
set
show
telnet
terminal
walkmib
whoami
ML1200>
The following example lists commands starting with a specific string:
ML1200> s <TAB>
set
show
ML1200>
In the following example, the <TAB> key completes the command:
ML1200> se<TAB>
password
timeout
vlan
ML1200> set
1.4.10 Exiting
To exit from the CLI interface and terminate the console session use the logout
command. This command prompts to ensure that the logout was not mistakenly typed.
The following syntax applies:
logout
The following example illustrates logging out from a session:
ML1200> logout
Logging out from the current session [’Y’ or ’N’] Y
Connection to the host lost
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1.5EnerVista Secure Web Management
1.5.1Logging in for the First Time
Enter the following URL in the web browser to login to the EnerVista Secure Web
Management software.
https://<IP Address assigned to the switch>
Note
Make sure you use HTTPS (secure HTTP) and not HTTP in the URL.
In the example shown in the previous section, the URL is:
https://3.94.247.41
If your site uses name services, you can use a name instead of the IP address. Please make
sure that the name is resolved to the IP address assigned to the switch.
The secure site will issue the certificate check shown below.
FIGURE 1–2: Security certificate
Once you click Yes on the security certificate, the browser will prompt you to login.
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INTRODUCTIONCHAPTER 1: INTRODUCTION
FIGURE 1–3: Login screen
For the first time,
Z Login with the name manager and password manager.
Z Click on Login.
After a successful login, the welcome screen is shown. Note the different information
provided on the screen and different areas. The menus are used to configure settings on
the switch. Users can click on a specific port to open the port configuration view.
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1.5.2Privilege Levels
• Operator privilege users: operator privileges allow views of the current
• Manager privilege users: manager privileges allow configuration changes. The
1.5.3User Management
A maximum of five users can be added per switch. Users can be added, deleted or
changed from a manager level account. There can be more than one manager account,
subject to the maximum number of users on the switch being restricted to five.
The username must be a unique name. The password is recommended to be at least 8
characters long with a mix of upper case, lower case, numbers and special characters.
FIGURE 1–4: Welcome screen
configurations but do not allow changes to the configuration.
changes can be done at the manager prompt or for global configuration as well as
specific configuration.
Z Select the Administration > User Mgmt > User Accounts menu
item.
Z To add a user, use the
add button.
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In the following example below, the user peter was added with manager privilege after
clicking the add button.
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After successfully adding a user, the added user is displayed in the list of users as shown
below.
Z To delete a user, click on the delete icon ()as shown below.
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INTRODUCTIONCHAPTER 1: INTRODUCTION
The firmware will prompt to verify the delete command.
Z To modify the password, view the users as described above and click
on the edit icon ().
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After clicking on the edit icon, the screen opens up for modifying the password.
In this example, the user ID peter was selected for modification. The password for peter
will be modified after the new password is entered.
1.5.4Modifying the Privilege Level
Privilege levels cannot be changed from the EnerVista Secure Web Management (SWM)
firmware. This can only be done through the CLI interface, or alternately, by deleting the
user and adding the same user with the proper privilege level.
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1.5.5Help
Help for the EnerVista Secure Web Management software can be obtained by clicking on
the Help icon as shown below.
1.5.6Exiting
Z To exit or logout, click on the logout button.
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Z Confirm the logout by selecting OK in the pop-up window.
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Version #
Version #
1.6ML1200 Firmware Updates
1.6.1Updating Multilink ML1200 Firmware
This section describes the process for upgrading firmware on a ML1200 Switch Module.
There are several ways of updating Firmware on a Multilink ML1200: Serial using the
Multilink ML1200’s Console port, tftp or through ftp.
1.6.2Selecting the Proper Version
The latest version of the firmware is available as a download from the GE Multilin web site.
To determine the version of firmware currently installed on your Switch, proceed as
follows:
Z Using the EnerVista web interface, log into the Switch using the
procedure described earlier. The firmware version installed on the
switch will appear on the lower left corner of the screen.
1.6.3Updating through the Command Line
Use the following procedure to install firmware to the ML1200 via the serial port .
Z Download the MultiLink Switch Software from the GE Multilin web
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site.
Z Use the null-modem cable to connect to the ML1200 serial port.
Z Login at the manager level with the proper password.
CHAPTER 1: INTRODUCTIONINTRODUCTION
Z Save the existing configuration (refer to section 5.4.4 - Saving
Configuration for details).
Z Enter the following command:
ML1200# xmodem get type=app
Do you wish to upgrade the image? [Y or N] Y
Please start XModem file transfer now.
Refer to “Saving Configuration” on page 20 for details on the xmodem command.
Once the upgrade is started, the terminal emulation firmware will ask for the installation
file location.
Z Indicate the file location to begin the file transfer.
Z Make sure the Xmodem protocol is also selected in this file location
dialog window.
In some operating systems it maybe necessary to select the transfer option.
In this case,
Z Return to the HyperTerminal window used in step 5.
Z Select the Transfer > Send File menu item.
Z As shown below, enter the location of the new firmware file.
Z Select the Xmodem protocol.
Z Select the Send button and to begin the file transfer.
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Z Once the file transfer is completed reboot the switch with the
reboot command or by cycling power.
Z Login to the switch and use the
show version command to verify
and upload the configuration file (if necessary).
1.6.4Updating through the EnerVista Secure Web Management software
Use the following procedure to install the EnerVista Secure Web Management software.
Z Download the latest MultiLink ML1200 Managed Field Switch
firmware from the GE Multilin web site.
Z Save this file on FTP or TFTP. Ensure the FTP or TFTP path is
configured. If using FTP, record the FTP login name and password.
Z Select the switch to upgrade. Ensure you have system administration
privileges available on the switch.
Z Open an EnerVista Secure Web Management software session with
the switch by typing in the following URL:
https://<IP address of the switch>
If using FTP, save the configuration before proceeding. GE Multilin recommends a two-step
update: first save the configuration to the ftp server, then load the new image and restart
the switch (refer to section 5.4.4 - Saving Configuration for details on saving the
configuration).
Z Load the new firmware as shown below.
As the file is being loaded, the firmware will display the transfer in progress window.
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Z Reboot the switch when the transfer is complete.
After reboot, the firmware is ready for use.
Z If using TFTP, save the configuration before proceeding.
GE Multilin recommends a two-step update:
• first save the configuration to the TFTP server,
• then load the new image and restart the switch (refer to section
5.4.4 - Saving Configuration for details on saving the
configuration).
Z Load the new firmware as shown below.
As the file is being loaded, the firmware will display the transfer in progress window.
Z Reboot the switch when the transfer is complete.
After reboot , the f irmware is ready for use.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL1–27
INTRODUCTIONCHAPTER 1: INTRODUCTION
1–28MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
Digital Energy
Multilin
2.1Overview
Multilink ML1200
Managed Field Switch
Chapter 2: Product Description
Product Description
Multilink ML1200 Managed Field Switches provide maximum configurability in their class.
The fiber-rich ML1200 can be configured with up to 12 100Mb fiber ports and two Gigabit
ports. For 10/100 copper, regular or PoE-equipped 10/100 RJ-45 or 10/100/1000 copper
ports may be configured to a maximum or 12 at 10/100 and 2 Gig ports. Multilink ML1200
comes with the best-of-breed managed networks software featuring GUI ease of use,
Secure Web Management, SNMPv2,v3 management, 802.1p QoS Prioritization, Tag-based
VLANs, IGMP Snooping and IGMP-L2 multicast management, port security, RADIUS and
TACACS+ support, and a choice of redundancy options including RSTP and GE Multilin’s
rapid-ring-recovery Ring-Only Mode.
Multilink ML1200s are ideal for building a switched, hardened Ethernet network
infrastructure, connecting edge devices such as PLCs and IEDs with upstream switches or
routers. Designed for use in industrial applications such as factory floors and control
cabinets, industrial video surveillance systems with PoE, power utility substations, tariffed
carrier field facilities, or transportation and oil and gas, the rugged Multilink ML1200
handles stressful workloads (mixes of bursty data traffic and priority streaming traffic) as
well as harsh environmental conditions.
Advanced thermal design techniques with ribbed –surface Aluminum cases for maximum
heat dissipation and a sealed case design enables the unit to operate in harsh Industrial
grade environments efficiently. Heavy duty Ethernet Switch jobs are readily
accommodated with an extended temperature rating of -40˚C to 60˚C by the UL
Component Parts method, or -50˚C to 85˚C by the IEC 60068 Type-Test method. With
options such as several popular DC power input types (optional AC power) and DIN-Rail
mounting, the hardened Multilink ML1200 is a “multi-purpose” Industrial Ethernet Switch.
The ML1200 managed switches also provide PoE options via power –inside PoE modules
on one of A, B or C slots and allows the users to select a wide option of combo PoE modules
to support 802.3af pd devices. See details for PoE modules in sec 5.2.10. The Power
Sourcing Equipment (PSE) is fully compatible with Powered Devices (PD)(e.g wireless access
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL2–1
PRODUCT DESCRIPTIONCHAPTER 2: PRODUCT DESCRIPTION
points, IP phones) that comply with the IEEE 802.3af PoE standard. The PoE switch ports
have an auto-sensing algorithm, so that they provide power only to 802.3af, PoE end
devices. PoE is managed by a multi-stage handshake to protect equipment from damage and to manage power budgets .The PoE ports will discontinue supplying power
when the PoE powered devices are disconnected. This feature supports the 802.3af PoE
PSE standard for over-current protection, under-current detection, and fault protection.
High performance features include non-blocking unicast traffic speed on all ports and
802.1p QoS Traffic Prioritization. Multilink ML1200 switches are “plug-and-play” and are
designed for use in connecting edge devices such as PLCs, IEDs and PoE video cameras
with upstream switches and routers where a mix of bursty data traffic and priority
streaming traffic for video surveillance and cell-tower applications are present. Multilink
ML1200 Field Switches are provided with LAN management software including SNMP, Tagand Port-based VLANs, IGMP-L2 and IGMP Snooping, and Port Security with control via GUI
and command line interface (CLI). For high availability LANs using ring topologies,
Spanning Tree Protocol, RSTP, Link-Loss-Alert and Ring-Only Mode are available.
Multilink ML1200 Managed Field Switches have heavy-duty aluminum cases and are
readily available with standard Industrial grade 24VDC power. Alternative internal DC
power options are available. DC power input types may be 24V, 48V, 125V, and dual source
DC input is optional on all ML1200’s. (AC power is available via an external power supply
unit, see Section 3.4 for details).
Alarm Relay contacts provided on each Multilink ML1200 Switch monitor the hardware and
software through traps, providing a record of any losses of power signals and other userdefined software events. See Section 3.5 for details.
The wide selections of Quad port (queen size) modules are key to the flexibility and
adaptability of Multilink ML1200s. Some of the popular 4 ports modules are described
below. For a list of all the modules and options, see Section 1.2
Note
The ML1200 modules can only be configured at the factory.
2–2MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
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2.1.1Four-port SFF fiber modules (CC Module, CD Module), 100Mb fiber
In a four-port SFF (Small Form Factor) fiber port module, all of the fiber ports are of the
same speed (100Mb), mode, and connector type. Small Form Factor (SFF) Fiber Ports come
in multi-mode forms MT-RJ or LC-type connectors, and single-mode form LC-type
connectors.
The 100Mb fiber four-port modules for the Multilink ML1200’s normally are set (factory
default) to operate in full-duplex mode for best fiber distance and performance. The user
may select full- or half-duplex mode per-port through set port command. The set-up of
the software gives the user flexibility to adapt to any FDX or HDX type of Fast Ethernet
devices).
There are three LED’s per fiber port. The Link (LK) LED indicates “ready for operation” on
that port when lit. The F/H LED indicates operation in full-duplex mode when ON (halfduplex when OFF). The blinking ACT LED indicates receiving Activity on the port. A fiber
cable must be connected into a SFF port and the Link (LK) indicator for that port must be
ON (indicating there is a powered-up device at the other end of the cable) in order for a LK
LED to provide valid indications of operating conditions on that port.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL2–3
PRODUCT DESCRIPTIONCHAPTER 2: PRODUCT DESCRIPTION
2.1.2Four-Port Copper Module, C1 Module MDIX)
The ML1200’s 4-port Copper module, the C1 Module, provides four 10/100Mb switched RJ45 ports. The 10/100Mb switched ports normally (as a default setting) are independently Nway auto-negotiating and auto-crossover (MDIX) for operation at 10 or 100Mb speed in
full- or half-duplex mode. (i.e., each independently selects a mode and speed to match the
device at the other end of the twisted pair cable).
(See Section 5 for auto-negotiation and MDIX details).
On the C1 module, there are four LEDs for each port, two integrated into the connector,
and two below the connector. The LK (Link) LED indicates “ready for operation” on that port
when lit. The blinking ACT (Activity) LED indicates receiving Activity on that port when lit.
The 10/100 LED indicates operation at 100Mb speed when ON and at 10 Mb speed when
OFF (when auto-negotiation is not disabled). The FDX/HDX LED is ON to indicate full-duplex
operation and OFF to indicate the half-duplex mode. A twisted pair cable must be
connected into an RJ-45 port and the Link (LK) indicator for that port must be ON
(indicating there is a powered-up device at the other end of the cable) in order for a LK LED
to provide valid indications of operating conditions on that port.
Using the ML1200 management software, the user may disable auto-negotiation and fix
the desired operation of each RJ-45 port. The user may select 10Mb or 100Mb speed and
full- or half-duplex mode per-port as per user requirements.
The PoE (Power-over-Ethernet) RJ-45 ports are similar to regular RJ-45 ports, except they
have the capability of providing power on each port to power up the PD devices, per the
IEEE802.3af PoE standard. The power-pass-through PoE modules are dependent upon the
-48VDC input power to supply the PD power for these RJ-45 (10/100) ports. Each port
supplies up to 15watts to power the PoE PD devices. A maximum of 8 PoE ports can be
configured in the A and B slots of a ML1200 switch with -48vdc power input. The PoE
modules are also available with mix–n-match fiber modules configured in other ML1200
slots. Please check the ordering information for all the various PoE module options.
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The LEDs on C2 PoE modules are slightly different compared to regular (non-PoE) RJ-45
modules as shown in the figure below. When the PoE port is in use, the PoE LED is ON when
connected properly to an 803.af compliant PD device on that port. When non-PoE devices
are connected, the PoE LED is OFF. The operation of Ethernet data traffic is not affected by
PoE.
LINK and ACTIVITY LEDS are combined on the PoE modules into one LED that is marked as
LINK/ACT, as shown in the diagram.
2.1.4Two-Port Fiber Modules, 2@ 100Mb fiber
The two-port modules are available as two 100Mb fiber ports. ST or SC connector styles
are available utilizing multi-mode or single-mode fiber optics. These fiber modules may be
factory configured with a choice of them in slots B, C, and D only.
The fiber port’s LEDs indicate status the same as the SFF fiber modules. Color-coding on
the panel of the module shows which LEDs belong to which port.
2.1.5Two -Port 10 Mb mm Fiber ST Modules
The 2-port @10Mb ST fiber modules behave the same as the 2@100Mb ST fiber modules
except for the 10Mb speed.
The default setup on the 10Mb fiber module is half-duplex, which allows the Multilink
ML1200 Switch to connect to any 10Mb hub or media converter or almost any other device
with a 10Mb fiber Ethernet port. The default setting of the 100Mb fiber module is full
duplex. User mode-control per port through the “port settings” is the same as the other ML1200 modules.
The fiber ports support fiber cabling distances according to the 10BASE-FL and 100BASEFX standards, i.e., 2km distance for multi-mode fiber. (Single-mode for greater distances
may be available as a special order, request quote).
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL2–5
PRODUCT DESCRIPTIONCHAPTER 2: PRODUCT DESCRIPTION
2.1.6SFP Gigabit (1000Mbps) port modules
The Gigabit port options for the modular slot come in a few different configurations of
Fiber SFP’s or RJ-45’s. The Multilink ML1200 offers only SFPs (Small Form Pluggable) for
Gigabit speed. There are multiple choices of SFP Gigabit transceiver types to combine with
RJ-45’s for the modular slot. Up to two Gigabit ports (max.) can be configured in the
modular slot C only. An example of a two Gb module is the HI Module (SFP fiber). An
example of a single Gigabit module is the HK Module (10/100/1000Mb RJ-45 ports). A
combo option of Gigabit copper and SFP fiber (HA Module) is shown below in the figure
below.
The ML1200 Modules provide an SFP opening for insertion of industry-standard SFP
transceivers to provide Gigabit (Gb) media flexibility. Gigabit SFP modules are available in
both multi-mode (550m) and single-mode (10, 25, 40, 70) km fiber options as well as a
Gigabit copper option.
There are three LEDs mounted on each Gigabit port module. The Gigabit fiber has LEDs
that indicate F/H (Full/Half duplex), LK (Link status) and ACT (receiving activity) on that port
when lit. The copper Gigabit ports come with speeds indicating (10/100/1000Mb) LEDs
also.
The operation of the Gigabit SFP and 10/100/1000 RJ-45 ports is as described for those
port types above.
2.1.7Packet Prioritization, 802.1p QOS
Quality of Service means providing consistent predictable data delivery to users from
datagram paths that go all across a network. As a LAN device, the Multilink ML1200 can
do its part to prevent any QOS degradation while it is handling Ethernet traffic through its
ports and buffers.
The Multilink ML1200 switching hardware supports the IEEE 802.1p standard and fulfills its
role in support of QOS, giving packet processing priority to priority tagged packets
according to the 802.1p standard. In addition to hardware support for QOS, the MNS
software (R2) supports two priority queues that can be shared across the eight levels of
defined packet priorities for application-specific priority control by the user through
software configuration settings.
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2.1.8Frame Buffering and Flow Control
Multilink ML1200’s are store-and-forward switches. Each frame (or packet) is loaded into
the Switch’s 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., are good
packets. This eliminates the 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 will also permit bad frames
to propagate out to the Ethernet segments connected. The "cut-through" technique
permits collision fragment frames (which are a result of late collisions) to be forwarded
which add to the network traffic. Since there is no way to filter frames with a bad CRC (the
entire frame must be present in order for CRC to be calculated), the result of indiscriminate
cut-through forwarding is greater traffic congestion, especially at peak activity. Since
collisions and bad packets are more likely when traffic is heavy, the result of store-andforward operation is that more bandwidth is available for good packets when the traffic
load is greatest.
When the Multilink ML1200 Switch detects that its free buffer queue space is low, the
Switch sends industry standard (full-duplex only) PAUSE packets out to the devices sending
it packets to cause “flow control”. This tells the sending devices to temporarily stop sending
traffic, which allows the traffic to catch-up 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 Multilink ML1200 Switches is a collision-based flowcontrol mechanism (when operating at half-duplex only). When the Switch detects that its
free buffer queue space is low, the Switch prevents more frames from entering by forcing a
collision signal on all receiving half-duplex ports in order to stop incoming traffic.
2.1.9Managed Network Firmware for Multilink ML1200-Series
Multilink ML1200 comes with Version 3.3 management firmware, which allows the user to
configure the Multilink ML1200 as a Managed Switch and implements security, and other
software-enabled, features.
Note
Multilink ML1200 managed switch will work with Version 3.3 firmware or higher only; using
any other firmware version will not support the hardware).
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL2–7
PRODUCT DESCRIPTIONCHAPTER 2: PRODUCT DESCRIPTION
2.2Features and Benefits
• Managed switching for high performance Ethernet LANs.
Multilink ML1200 Switches provide unicast non-blocking (all ports can run at full
speed at once) performance with standard Managed Network Software included.
They are typically used in LAN traffic centers with up to 12 100Mb +2 Gigabit ports
for backbone connections, where managed network services are desired.
• Switching services includes 802.1p QoS packet prioritization.
The Multilink ML1200 switching hardware supports QoS, giving packet processing
priority to priority tagged packets according to the IEEE 802.1p standard. For portand application-specific priorities of data, the QoS software may be configured.
• Features Fiber-Built-In.
Multilink ML1200 Managed Field Switches are designed to naturally include fiber
ports, and support mixes of multi-mode, single-mode; 10Mb, 100Mb and 1000Mb
speed; full-and half-duplex; classic Small Form Factor (SFF) and GBIC fiber
connectors. RJ-45 10/100 ports can also be configured in the mix of port types.
• Ring-Only Mode for reliable high availability using ring topology.
Ring-Only Mode feature provides reliable fast recovery of a fault in a ring topology.
• Relay Contacts for monitoring internal power and user-defined software
events.
Two Alarm Relay contacts monitor basic operations. One is for hardware, and will
signal loss of power internally. The other is software controllable and will signal
user-defined software events such as a security violation or an RSTP Topology
Change condition.
• Vertical mounting for efficient convection cooling, no fans, extended temp.
Mounting brackets for vertical mounting are included. DIN-Rail mounting
hardware is optional. Ethernet signal and power cables attach at the bottom. Two
sets of status LEDs are included, one set viewable at the port connector and one
set viewable from the front.
• Standard AC power input, -48VDC or 24VDC or 125VDC input is optional.
Standard AC power input comes with an IEC plug and is auto-ranging for
worldwide use. For special applications, models with –48VDC or 24VDC or 125VDC
are available. Dual Source DC input can also be selected and configured on the DC
power input models.
• Heavy-duty design for Industrial Ethernet and extended temperature
operation.
Fiber ports take more power than copper ports, but the Multilink ML1200 design
provides for this with heavy-duty components. The ambient temperature dualrating is 60`C per UL methods, and 95°C per type test methods.
• Management Software included.
ML1200 firmware includes SNMP Switch Management with secure access control,
RMON, CLI, Port Security; Port Mirroring; secured Radius and TACACs+, Telnet , TFTP,
FTP support, Spanning Tree Protocol, Link-Loss-Learn, Ring-Only Mode multi-level
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QoS, Port- and tag-based VLANs, GVRP, IGMP Snooping, SNMPc GUI support; Event
Log; SNTP client for time-of-day; BootP and DHCP client for IP configuring, and
password security and Secured Web interface.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL2–9
PRODUCT DESCRIPTIONCHAPTER 2: PRODUCT DESCRIPTION
2.3Applications
Multilink ML1200 Field Switches offer high performance, modularity and availability. They
provide the flexibility of 100Mbps fiber and copper ports as well as single or dual Gigabit
(1000Mb) ports, with industry-standard LAN management software. Multilink ML1200
Switches are easily used in a variety of applications including client/server computing,
secure VLAN- performance upgrades to departmental networks, and stream traffic for
VOIP and audio/video applications. They can also be used in a very diversified
combination of mixed media in Industrial floor applications. The performance
characteristics of the ML1200 Switches enable them to inter-connect a series of subnets
(one subnet per ML1200 Switch port) in a LAN traffic center. The subnet connections may
be via fiber or twisted pair cabling, 100Mbps or 10 Mbps speed, and full-or half-duplex.
The mixed-media modular capability is ideal for industrial applications where existing
Ethernet LAN network cabling must be accommodated. The fiber-built-in media capability
is ideal for integrating future-proof fiber cabling into the LAN structure.
Example 1 : Multilink ML1200 Switch for a Industrial Application
Equipped with lots of useful features including hardened enclosures, a wide spread of DC
power supply options, and extended temperature ratings qualifies the Multilink ML1200
Managed switch for any Industrial factory-floor, traffic control, transportation system, or
power utility application. The several operated features qualifies this managed switch to
operate and perform securely and reliably in all critical applications. The addition of Ring-Only Mode and the Link-Loss-Learn software features allow this Managed switch to provide
a very secure highly available redundant network capability in any ring topology network.
The Managed ML1200’s modularity along with the management software features
remarkably handle industrial environments (i.e. where the factory floors are networked
with Ethernet based mixed-media LANs equipped with PLCs, computers for taking
readings and data from Machines, Client/ Server databases, etc. and sending these
important data to the central office data warehouses) very securely and reliably. The DINRail Mounting options on the Multilink ML1200 allow the factory floor’s industrial user to
mount the ML1200 securely anywhere on their Network setup.
The option of setting the ports at 10 or 100Mb on copper and 10 or 100Mb on fiber media
provide widespread options to the users to mix and match their legacy and advance
network needs. The modularity of the ML1200 Managed Field Switches make them an
attractive choice for use in applications with LAN connections to an organization’s multiple
site offices and factory- floors. The different locations can be easily connected together
with the Fiber ports supported by the Multilink ML1200 Switch. A main NT-server in a
secure area protected from earthquake or fire hazards can be connected to the full duplex
Gigabit Fiber port.
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Extended temperature ratings and a variety of options for AC/DC power supplies qualify
this managed ML1200 switch for use in non-temperature controlled networks and many
other temperature sensitive critical Industrial applications where above normal room
temperatures occur while the network is in operation. Full-duplex future proof fiber media
can easily connect long distance subnets and provide a stable secure network to all
applications. The SNMP management capability of the Multilink ML1200 Switch helps
create a database of all the network subnets to easily manage the network.
Example 2:
A managed network is needed to provide a redundant ring topology for maximum
redundancy. In a network where any faulty cable, cable disconnection or power failure
can bring the whole thing down, a ring switch can be reconfigured and up and running in
milliseconds. The ring topology of the network consists of high speed LAN segments
supported by 100Mbps full-duplex future-proof fiber media to provide a secure long
distance LAN connection. The entire network is sharing a higher bandwidth Gigabitenabled data-mining server for the vital database located in a separate secured building.
The copper ports are required for multiple subnets inside the power plant to check the
status of other Ethernet units. The entire spread network will be manageable to provide
easy, detectable, uninterrupted support through a viewable SNMP monitor.
The Multilink ML1200 Managed Field Switch equipped with a mix of copper and fiber ports
provides an economical and seamless solution to many requirements. The userconfigurable Multilink ML1200 provides an extra boost to the network requirements by
providing copper/fiber media along with the higher bandwidth support of 10/100 and
1000Mb. The user can utilize the SNMP feature equipped with VLAN, RMON, STP and other
standard managed LAN features to provide a secure and stable network.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL2–11
PRODUCT DESCRIPTIONCHAPTER 2: PRODUCT DESCRIPTION
The ML1200 Managed Fiber with the Ring-Only Mode feature easily fulfill the redundant
requirement with a secure and fast reconfiguration time for cable breakup when set up in
a ring topology. The Gigabit port option boosts the bandwidth for high speed to support
the peak traffic and minimize congestion.
Example 3:
In another application in an industrial environment, a 12 port Nebs compliant , -24VDC
managed switch is required to meet the fiber and copper connections to cover the wider
area of video CCTV. The switch must be SNMP enabled and managed to easily monitor the
whole setup.
The Multilink managed field switch easily qualifies for this requirement with the various
features and modularity it has. Loaded with management software, the field switch
provides a very effective and economical solution for the video -vignette environment.
The security features (e.g. port-security, VLANs, SNMPv3, secure telnet, etc.) also boost the
Multilink managed switches to provide a very effective and reliable solution. The
modularity feature to support both copper and fiber at either 10/100/1000Mb speeds
easily meets the various speeds of legacy and future broadband requirements.
In a fast growing secure video environment, the ML1200 is a reliable and secure solution.
The modular design of the Multilink ML1200s, provide a wide range of copper/fiber options
to meet requirements. The Gigabit uplink for storage or broadband uplink allows the
telecom user a very effective solution to store their sensitive data securely.
2–12MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
Digital Energy
Multilin
3.1Preparation
Multilink ML1200
Managed Field Switch
Chapter 3: Installation
Installation
Before installing the equipment, it is necessary to take the following precautions:
1.If the equipment is mounted in an enclosed or multiple rack assembly, the
steady-state long-term environmental temperature around the equipment
must be less than or equal to 60
2.If the equipment is mounted in an enclosed or multiple rack assembly,
adequate airflow must be maintained for proper and safe operation.
3.If the equipment is mounted in an enclosed or multiple rack system,
placement of the equipment must not overload or load unevenly the rack
system.
4.If the equipment is mounted in an enclosed or multiple rack assembly, verify
the equipment’s power requirements to prevent overloading of the building/s
electrical circuits.
5.If the equipment is mounted in an enclosed or multiple rack assembly verify
that the equipment has a reliable and uncompromised earthing path.
3.1.1Locating Multilink ML1200 Switches
For vertical panel mounting and wall mounting, see Section 3.3.
For vertical DIN-Rail mounting, see Section 3.3.1.
For DC power input data, see Appendix B. For Dual Source, see Appendix C
0
C.
The rugged metal case of the Multilink ML1200 will normally protect it from accidental
damage in a lab or workplace setting. Maintain an open view of the front to visually
monitor the status LEDs. Keep an open area around the unit so that cooling can occur
from convection while the unit is in operation. The ML1200 has no fans, so it is silent when
in operation. Internal electronics use the case as a heat sink, so the unit may normally be
quite warm to the touch.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL3–1
INSTALLATIONCHAPTER 3: INSTALLATION
3.2Connecting Ethernet Media
The Multilink ML1200 Switches are specifically designed to support all standard Ethernet
media types within a single Switch unit . This is accomplished by using a family of different
Fiber Connectors which can be individually selected and configured per-slot. See Section
2.2 for a description of the PMs.
The various media types supported along with the corresponding IEEE 802.3, 802.3D,
802.3u, 802.3AB and 802.3z standards and connector types are as follows:
IEEE StandardMedia Type Max. Distance Fiber Connector
Fiber:
100BASE-FXmm
100BASE-FXmm Fiber2.0km (6,562 ft)ST
small form factormm Fiber2.0km (6,562 ft)MTRJ, MLC
small form factorsm Fiber15 kmSLC
The following procedure applies to installations using a PM with ST-type fiber connectors.
This procedure applies to ports using a ML1200 module, MST-type port.
1.Before connecting the fiber optic cable, remove the protective dust caps from
the tips of the connectors on the PM. Save these dust caps for future use.
2.Wipe clean the ends of the dual connectors with a soft cloth or lint-free lens
tissue dampened in alcohol. Make certain the connectors are clean before
connecting.
Note
One strand of the duplex fiber optic cable is coded using color bands at regular intervals;
you must use the color-coded strand on the associated ports at each end of the fiber optic
segment.
3.Connect the Transmit (TX) port (light colored post) on the Multilink PM to the
Receive (RX) port of the remote device. Begin with the color-coded strand of
the cable for this first TX-to-RX connection.
4.Connect the Receive (RX) port (dark colored post on the PM) to the Transmit
(TX) port of the remote device. Use the non-color coded fiber strand for this.
The LINK LED on the front of the PM will illuminate when a proper connection has been
established at both ends (and when power is ON in the unit). If LINK is not lit after cable
connection, the normal cause is improper cable polarity. Swap the fiber cables at the PM
connector to remedy this situation.
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3.2.0.2 Connecting Fiber Optic SC-type, "Snap-In"
The following procedure applies to installations using a PM with SC-type fiber connectors,
i.e., using C9 Module, CA Module single-mode:
When connecting fiber media to SC connectors, simply snap on the two square
male connectors into the SC female jacks of the PM, until it clicks and secures.
3.2.0.3 Connecting Single-Mode
Fiber Optic
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, 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, and may be used to connect 10 Mb nodes up to
10 Km apart, or 18Km with the ML1200.
The same procedures as for multi-mode fiber, applies to single-mode fiber connectors.
3.2.0.4 Connecting Twisted Pair (CAT3, CAT5, Unshielded or Shielded)
The RJ-45 ports of the Multilink ML1200 can be connected to the following two media
types: 100BASE-TX and 10BASE-T. 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 meters (328 ft).
It is recommended that high quality CAT. 5 cable be used whenever possible in order to
provide flexibility in a mixed-speed network, since 10/100 copper switched ports are autosensing for either 10 and 100Mb/s.
The following procedure describes how to connect a 10BASE-T or 100BASE-TX twisted pair
segment to the RJ-45 port. The procedure is the same for both unshielded and shielded
twisted pair cables.
1.Using standard twisted pair media, insert either end of the cable with an RJ-
45 plug into the RJ-45 connector of the port. Note that, even though the
connector is shielded, either unshielded or shielded cables and wiring may be
used.
2.Connect the other end of the cable to the corresponding device
3.Use the LINK LED to ensure proper connectivity by noting that the LED will be
illuminated when the unit is powered and proper connection is established
Note
For Power Substations: In support of the IEEE 1613 Class 2 standard, GE Multilin advises
that, for substation applications, the RJ-45 ports are intended for connectivity to other
communication equipment such as routers or telecommunication multiplexers installed in
close proximity (i.e., less than 2 meters or 6.5ft) to the ML1200. It is not recommended to
use these ports in substation applications to interface to field devices across distances
which could produce kigh (greater than 2500V ) levels of ground potential rise (GPR) during
line-to-ground fault conditions. The ML1200 passes the 1613specifications for zero packet
loss with fiber ports & with RJ-45 ports used as indicated here.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL3–3
INSTALLATIONCHAPTER 3: INSTALLATION
3.2.0.5 Connecting Twisted Pair (CAT5e or better, Unshielded or Shielded)
The RJ-45 Gigabit ports of the Multilink ML1200 can be connected to the media types,
1000BASE-T or CAT 5E or better 100-ohm UTP or shielded twisted pair (STP) balanced cable.
The CAT 5E or better 100-ohm UTP or shielded twisted pair (STP) balanced cable is
recommended to use when making 1000BASE-TX connections. In either case, the max
distance for unshielded twisted pair cabling is 100 meters (328 ft).
MediaIEEE StandardConnector
Twisted Pair (CAT 5e)1000BASE-TRJ-45
The following procedure describes how to connect a 1000BASE-T twisted pair segment to
the RJ-45 port. The procedure is the same for both unshielded and shielded twisted pair
cables.
1.1000BASE-T connections require that all four pairs or wires be connected.
Insert either end of the cable with an RJ-45 plug into the RJ-45 connector of
the port. Note that, even though the connector is shielded, either unshielded
or shielded cables and wiring may be used.
2.Connect the other end of the cable to the corresponding device
3.Use the LINK LED to ensure proper connectivity by noting that the LED will be
illuminated when the unit is powered and proper connection is established
The small form-factor pluggable (SFP) is a compact optical transceiver used in optical
communications for both telecommunication and data communications applications. Due
to its compact, hot pluggable characteristics, SFPs are becoming a very popular choice for
various applications. The small-chassis Multilink ML1200 is designed for industry-standard
Gb-SFPs and Gb-SFPCU (copper) for user selection of the SFP gigabit media type as
desired.
All SFPs used in Multilink ML1200s are compliant with the industry standard Multi-Source
Agreement (MSA) ensuring compatibility with a wide range of networking kit.
Note
It is highly recommended to remove the fiber cable first before removing the SFP
transceiver for any reason. Not removing the fiber cable first can damage the fiber cable,
cable connector or optical interfaces. It is advised not to remove and insert a SFP
transceiver frequently as this may shorten its useful life.
Note
Always use an ESD wrist strap while handling the SFP transceivers since the SFP modules
are static sensitive devices.
Note
The copper 1000BASE-T SFP transceiver port supports 1000Mb only. It is recommended to
use a straight-through RJ-45(4-twisted pair) connection while connecting to any Server/
workstation. While connecting with any Switch/repeater or other device, it is
recommended to use Crossover RJ-45 (4-twisted pair) category 5 or higher cabling. The
maximum length supported on copper 1000BASE-T is 100mts (328 ft.).
The various SFPs transceivers supported by the GE Multilin ML1200’s C slot are:
3–4MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 3: INSTALLATIONINSTALLATION
Module Model# Gigabit
Gb Modules, fixed ports--SFP
H1 - H6 Module 2 SFP
H7 Module 2 CU
H8 - HD Module 1SFP, 1CU
HE - HJ Module 1 SFP
HK Module 1 CU
3.2.0.7 Connecting Fiber Optic Cable to SFP Transceivers
1.Before connecting the fiber optic cable, remove the protective dust caps from
the tips of the connectors on the PM. Save these dust caps for future use.
2.Wipe clean the ends of the dual connectors with a soft cloth or lint-free lens
tissue dampened in alcohol. Make certain the connectors are clean before
connecting.
Note
One strand of the duplex fiber optic cable is coded using color bands at regular intervals;
you must use the color-coded strand on the associated ports at each end of the fiber optic
segment.
3.Find the Transmit (TX) and Receive (RX) markings on the SFP transceiver to
verify the top side of it. Some of the transceiver marks arrow sign for up.
4.Position the SFP transceiver correctly before insertion, and then insert the SFP
transceiver carefully, until the transceiver connector snap into the place in the
socket connector.
5.Connect the Transmit (TX) port on the Multilink PM to the Receive (RX) port of
the remote device. Connect the Receive (RX) port on the PM to the Transmit
(TX) port of the remote device.
The LINK LED on the front of the PM will illuminate and turn Green, when a proper
connection has been established at both ends (and when power is ON in the unit). If LINK is
not lit or OFF after cable connection, the normal cause is improper cable polarity. Swap
the fiber cables at the PM connector and also check the connectivity on the target device
to remedy this situation.
Reconfigure or reboot both the device if required.
If connected properly, you can check via software for verification of the validity of SFP
Gigabit ports.
Make sure Version 3.3 or higher firmware is loaded on the ML1200 switches to support the
SFP transceivers.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL3–5
INSTALLATIONCHAPTER 3: INSTALLATION
3.3Mechanical Installation
3.3.1DIN-Rail Mounting the Multilink ML1200
The Multilink ML1200 is designed for use in a “factory floor” industrial environment. It is
available with optional DIN-Rail brackets to mount it securely in a metal factory floor
enclosure, maintained vertically for proper convection cooling of the unit. The Multilink
ML1200 requires one DIN-Rail mounting clip or latch for secure mounting. These may be
ordered as Model # DIN-RAIL-ML1200. See a ML1200 viewed from the side, at the left, with
model DIN-RAIL-ML1200 in place on the unit.
The Din Rail Latching clips are mounted on the upper side corners of the ML1200 unit. Two
threaded holes are provided on the sides of ML1200 for DIN-Rail mounting purposes. See
side view at the left. The required two screws are included with the DIN-Rail brackets, and
are no.10-32 X 3/8 PHIL. PAN w/star washer. The two heavy-duty Din-Rail latches are
designed as if that they can be manually accessed from the top when the ML1200 is
installed on a DIN Rail.
To install the ML1200 with the DIN-Rail brackets and latches attached to it, hold the
ML1200 in the side vertical position with the bottom out, and with the top moved in toward
the DIN-Rail. Position the latches over the top of the DIN-Rail. Then, snap the latches into
holding position by moving the bottom of the ML1200 inwards to a vertical position. The
DIN-Rail latches and brackets are heavy duty, and will hold the ML1200 securely in
position, even with cabling attached to the unit .
To release the ML1200 from the DIN-Rail mounting, press the top of the two DIN-Rail
latches down simultaneously to release the ML1200 so that it can be dismounted by
pulling the bottom out. Once the bottom of the ML1200 is rotated out, the DIN-Rail latch is
not engaged and the ML1200 can be moved up and out, free of the DIN-Rail mounting.
If the Multilink ML1200 is to be mounted on a DIN-Rail track, for proper convection cooling
of the unit there must be air space in the rear, as the ML1200 unit is held out from the rear
of the panel by the mounting brackets. The ML1200 design uses the case for cooling
(patent pending), and needs to be mounted vertically with air flow space around it in the
front, rear, and sides.
The DIN-Rail mounting brackets and latches are optional and need to be ordered as
separate items, e.g Model # DIN-RAIL-ML1200
3.3.1.1 Mounting Dimensions for ML1200 with metal brackets
Each Multilink ML1200 is supplied with metal mounting brackets and screws to mount the
unit securely on a panel or wall. It is recommended to mount the ML1200 vertically, as
shown below, for proper cooling and long-life reliability. It is also advisable to mount the
unit with space for air movement around the top and the sides, typically a minimum of 1
inch.
Note that the metal brackets supplied hold the back of the ML1200 unit out from the panel
or wall behind it, creating a rear space of about ¼ inch or 1cm. This allows air circulation
and cooling of the rear part of the case.
3–6MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 3: INSTALLATIONINSTALLATION
For best cooling of the ML1200, attach the metal brackets to metal (rather than wood or
plastic). Attaching to metal helps conduct heat away from the ML1200 through the metal
brackets and into the metal support structure.
Since the ML1200 has special internal thermal techniques (patent pending) to move the
heat generated by the electronic components inside into the case, the case may be quite
warm to the touch during normal operation.
The unit is mounted using the brackets as shown in the illustration above. The spacing for
the mounting screws into the supporting wall or panel is a rectangle 21.74 x 11.91 cm (8.56
x 4.69 inches) center-to-center.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL3–7
INSTALLATIONCHAPTER 3: INSTALLATION
3.4Electrical Installation
3.4.1Powering the Multilink ML1200 Managed Field Switch
The DC internal power supply supports installation environments where the DC voltage is
from 18 to 150 volts depending on the model selected. The power consumption will range
from about 20 up to 35 watts, depending on the port quantity and types in the
configuration.. When connecting the Ethernet cabling, there is no need to power down the
unit. Individual cable segments can be connected or disconnected without concern for
power-related problems or damage to the unit.
Power input options are available to suit the ML1200 Switches to special high-availability
communications and/or heavy industrial-grade applications, including:
• -48VDC, 24VDC and 125VDC with single DC input,
• -48VDC, 24VDC and 125VDC with dual-source DC input
External AC power supplies are optional, see Section 1.2, Ordering Information.
See the Appendices of this manual for more details. Use an RFQ for other variations.
3.4.2Alarm Contacts for monitoring internal power, and Software Traps
The Alarm Contacts feature, standard on Multilink ML1200’s, provides two Form C Normally
Closed (NC) contacts to which the user can attach two sets of status monitoring wires at
the green terminal block. When this option is present, the terminal block for Alarm
Contacts is part of the Power Input panel in the ML1200 case. The DC power input
connection is in the same panel.
The first NC Alarm Contact (top position, switch vertically mounted) is a “Software Alarm”,
operated by user settings in the management software. The user can disable the Software
Alarm feature with a software configuration command if desired. When the Software
Alarm is enabled, the Form C Normally Closed (NC) contact is held close during normal
software operation. A user-defined software malfunction, such as an SNMP Trap or a
Software Security violation or an Ring-Only Mode Fault, causes the contact to open and
thus triggers an alarm in the user’s monitoring system
The second NC Alarm Contact is held closed when there is power on the main board inside
of the Switch. This provides a “Hardware Alarm” because the NC contacts will open when
internal power is lost, either from an external power down condition or by the failure of the
power supply inside of the Multilink Switch.
Useful information about Alarm contacts:
1.There are four terminal blocks (1,2,3,4) provided next to the DC power supply.
2.The top two pins (1,2) are software operated.
3.The bottom two pins (3,4) are hardware operated.
4.These are both NC (normally closed) relays.
5.The switch’s software operation needs to be enabled and set to get the Alarm
traps. For detailed information about the Software Alarm and software control
of SNMP alarm traps, please refer to chapter 5 of this manual.
3–8MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 3: INSTALLATIONINSTALLATION
The Alarm Contacts are on the front left area (next to the DC power source) of the Multilink
ML1200 unit and are green in color as shown in the picture.
3.4.3ML1200 Port Module (PM) Installation
Multilink ML1200 Switches are normally received from the factory with all required Port
Modules installed.
Note
There may be situations where the PMs need to be added or replaced. Any change in
configuration of the modules can be done only via factory installation. There is no field
upgrade option for ML1200 port modules. Please contact Tech Support for changing
modules.
The ML1200 port modules are not compatible with or inter-changeable with the other
Multilink Family Switches’ PMs, which use larger (typically 8-port) modules.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL3–9
INSTALLATIONCHAPTER 3: INSTALLATION
3.4.4Connecting a Management Console Terminal to Multilink ML1200 (Serial-RJ-45
Console Port)
The serial console port on the Multilink ML1200 is different from other Multilink family
switches. The Serial RJ-45 port, as shown in the picture, requires an 8-pin RJ-45 male
connector to have the proper communication. (Note - the serial RJ-45 console port on the
Multilink ML1200 is compatible with Cisco-type RJ-45 console port cables).
The Serial port pin-out for the RJ-45 console port used on Multilink ML1200 is shown below.
Table 3–1: Pinout information for above connector
PinNameDescriptionDirection
1RTXRequest to SendOUT
3TXDTransceiver DataOUT
4GND Ground
5GND Ground
6RXDReceive DataIN
8CTSClear to SendIN
Note
The console RJ-45-Serial cable may be ordered from the Factory, using the model number
and description here:
CONSOLE-CBLQD- Console attachment cable serial null-modem cable with one side RJ-45
for the ML1200 and a male DB-9 Female connector on the other end.
CONSOLE-CBLQU- Console attachment cable serial null-modem cable Combo with one
serial- RJ-45 for the ML1200 side and a USB cable connector option on the other end (e.g
computer).
Note
For Power Substations: In support of the IEEE 1613 Class 2 standard, GE Multilin advises
that, for substation applications, the serial RJ-45console ports are intended for temporary
connectivity to other equipment such as PCs. Since the console port connection is
temporary, it is excluded from IEEE 1613 packet-loss testing per the 1613 standarddefined test procedure.
3–10MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
Digital Energy
Multilin
4.1Functionality
Multilink ML1200
Managed Field Switch
Chapter 4: Operation
Operation
This chapter describes the functions and operation of the Multilink ML1200 Switch.
4.1.1Switching Functionality
A Multilink ML1200 provides switched connectivity at Ethernet wire-speed among all of its
ports. The Multilink ML1200 supports10/100Mbs for copper media and 10 or 100Mb
separate traffic domains for fiber ports to maximize bandwidth utilization and network
performance. All ports can communicate to all other ports in a Multilink ML1200, but local
traffic on a port will not consume any of the bandwidth on any other port.
The Multilink ML1200 units are plug-and-play devices. There is no software configuring
necessary to be done for basic operation at installation or for maintenance. The only
hardware configuration settings are user options for an UP-LINK Switch (resides inside the
unit) on the ML1200-RJ-45. There is an optional Half / Full duplex mode and 10Mbps or
100Mbps selection for the switched ports which must be configured through management
software per unit as per the requirement. The internal functions of both are described
below.
4.1.1.1 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) is forwarded to all ports.
The Multilink ML1200 Switches operate in the store-and-forward switching mode, which
eliminates bad packets and enables peak performance to be achieved when there is
heavy traffic on the network.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–1
OPERATIONCHAPTER 4: OPERATION
4.1.1.2 Address Learning
All Multilink ML1200 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 ML1200 Switch automatically keeps up with node
locations.
An address-aging algorithm causes least-used addresses to fall out in favor for frequentlyused addresses. To reset the address buffer, cycle power down-and-up.
4.1.2Status LEDs
For Multilink ML1200 models (/ML1200) :
PWR: Power LED, ON when external power is applied to the unit.
LK: Steady ON, Link status for 10 Mbps and 100Mbps operation.
ACT: ON with port activity for 10 Mbps and 100Mbps operation.
F/H: Full / Half duplex LED, ON when the port is running full duplex, OFF for half duplex.
100/10: Speed LED, ON when the speed is 100Mbps , OFF when the speed is 10 Mbps
4.1.3Auto-Cross (MDIX) and Auto-negotiation, for RJ-45 ports
The RJ-45 ports independently support auto-cross (MDI or MDIX) in auto-negotiation mode
and will work properly with all the other connected devices with RJ-45 ports whether they
support Auto-negotiation (e.g 10Mb Hub, media converter) or fixed mode at 10Mb or
100Mb Half/Full Duplex(managed switch) or not. No cross-over cable is required while
using the ML1200’s copper port to other devices. Operation is according to the IEEE 802.3u
standard.
The Managed ML1200’s Fast Ethernet copper ports can be set for either fixed 100Mb
speed or for 10/100 F/H N-way auto-negotiation per the IEEE802.3u standard. The
selection is made via MNS software. The factory default setting is for auto-negotiation. At
10Mb or 100Mb-fixed speed, the user may select half- or full-duplex mode by
management Software for each RJ-45 port separately.
One frequently-used application for the Managed Multilink ML1200 Switch copper ports is
to connect one of them using a fiber media converter to another Switch in the network
backbone, or to some other remote 100Mb device. In this case, it is desirable to operate
the fiber link at 100Mb speed, and at either half- or full duplex mode depending on the
capabilities of the remote device. Standard commercially available Fast Ethernet media
converters mostly do not support auto-negotiation properly, and require that the switched
port to which they are connected be at the 100Mb fixed speed. Attachments to a 10/100
auto-negotiation port typically will not work properly. The ML1200 Switch’s RJ-45 ports
handle this situation by configuring the ports as per desired through MNS software port
settings and can check the port status of each port after the change.
When Multilink ML1200 RJ-45 copper ports are set for auto-negotiation and are connected
to another auto-negotiating device, there are 4 different speed and F/H modes possible
depending on what the other device supports. These are: (1) 100Mb full-duplex, (2) 100Mb
half-duplex, (3) 10 Mb full-duplex and (4) 10 Mb half-duplex.
4–2MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 4: OPERATIONOPERATION
The auto-negotiation logic will attempt to operate in descending order and will normally
arrive at the highest order mode that both devices can support at that time. (Since autonegotiation is potentially an externally controlled process, the original “highest order
mode” result can change at any time depending on network changes that may occur). If
the device at the other end is not an auto-negotiating device, the ML1200’s RJ-45 ports will
try to detect its idle signal to determine 10 or 100 speed, and will default to half-duplex at
that speed per the IEEE standard.
General information:
Auto-negotiation per-port for 802.3u-compliant switches occurs when:
•the devices at both ends of the cable are capable of operation at either
10Mb or 100Mb speed and/or in full- or half-duplex mode, and can send/
receive auto-negotiation pulses, and . . .
•the second of the two connected devices is powered up*, i.e., when LINK
is established for a port, or
•the LINK is re-established on a port after being lost temporarily.
Note
Some NIC cards only auto-negotiate when the computer system that they are in is
powered. These are exceptions to the “negotiate at LINK – enabled” rule above, but may
be occasionally encountered.
When operating in 100Mb half-duplex mode, cable distances and hop-counts may be
limited within that collision domain. The Path Delay Value (PDV) bit-times must account for
all devices and cable lengths within that domain. For Multilink ML1200 Fast Ethernet
switched ports operating at 100Mb half-duplex, the bit time delay is 50BT.
4.1.4Flow-control, IEEE 802.3x standard
Multilink ML1200 Switches incorporate a flow-control mechanism for Full-Duplex mode.
The purpose of flow-control is to reduce the risk of data loss if a long burst of activity
causes the switch to save frames until its buffer memory is full. This is most likely to occur
when data is moving from a 100Mb port to a 10 Mb port and the 10Mb port is unable to
keep up. It can also occur when multiple 100Mb ports are attempting to transmit to one
100Mb port, and in other protracted heavy traffic situations.
Multilink ML1200 Switches implement the 802.3x flow control (non-blocking) on Full-Duplex
ports, which provides for a “PAUSE” packet to be transmitted to the sender when the
packet buffer is nearly filled and there is danger of lost packets. The transmitting device is
commanded to stop transmitting into the ML1200 Switch port for sufficient time to let the
Switch reduce the buffer space used. When the available free-buffer queue increases, the
Switch will send a “RESUME" packet to tell the transmitter to start sending the packets. Of
course, the transmitting device must also support the 802.3x flow control standard in order
to communicate properly during normal operation.
Note
When in Half-Duplex mode, the ML1200 Switch implements a back-pressure algorithm on
10/100 Mb ports for flow control. That is, the switch prevents frames from entering the
device by forcing a collision indication on the half-duplex ports that are receiving. This
temporary “collision” delay allows the available buffer space to improve as the switch
catches up with the traffic flow.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–3
OPERATIONCHAPTER 4: OPERATION
4.1.5Power Budget Calculations for ML1200 PM’s 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:
Fiber Port
Speed, Std.ModeStd. km
Module
C710Mb
FL
OPB (Optical Power Budget) = P
where P
= Transmitter Output Power, and PR = Receiver Sensitivity
T
(min) - PR(min)
T
Worst case OPB = OPB - 1dB(for LED aging) - 1dB(for insertion loss)
Worst case distance = {Worst case OPB, in dB} / [Cable Loss, in dB/Km]
where the “Cable Loss” for 62.5/125 and 50/125μm (M.m) is 2.8 dB/km,
and the “Cable Loss” for 100/140 (Multi-mode) is 3.3 dB/km,
and the “Cable Loss” for 9/125 (Single-mode) is 0.5 dB/km
and the “Cable Loss” for 9/125 (Single-mode) is 0.4 dB/km (LX25)
and the “Cable Loss” for 9/125 (Single-mode) is 0.25 dB/km (ZX40)
and the “Cable Loss” for 9/125 (Single-mode) is 0.2 dB/km (ZX70)
The following data has been collected from component manufacturer’s (Agilent’s and
Lucent’s) web sites and catalogs to provide guidance to network designers and installers.
R’cvr
Worst
Multi-Mode 2
(2)
WavelengthnmCable Size/μm X’mitr
fdx
(hdx)
85062.5/125
100/140
50/125
Output
P
T
dB
-15.0
-9.5
-19.5
Sens.
P
dB
-31
-31
-31
Worst*
OPB,
distance
dB
R
14
5
19.5
5.9
19.5
3.4
Km
fdx
typical
OPB,
dB
17
23.5
13.5
typical*
distance
Km
fdx
6
7
4.8
C8, C9100Mb
FX
CA100Mb
FX
CB100Mb
FX
CC100Mb
FX
CD100Mb
FX
CE100Mb
FX
H3, HG1000 Mb FX
(Gigabit)
Multi-mode 2
(0.4)
Single-mode 18+
(0.4)
Single-mode 40
(0.4)
Multi-mode 2
(0.4)
Multi-mode 2
(0.4)
Single-Mode 15+
(0.4)
Single-Mode 1013109/125-10.0 -22 10221124
130062.5/125
50/125
13009/125-15-31 142817.5 35
13009/125-5-34 295832.5 65
130062.5/125
50/125
130062.5/125-19-31 124165.7
13109/125-15-28 1122--
-20
-23.5
-20
-23.5
-31
-31
-31
-31
9.0
5.5
9.0
5.5
3.0
2.0
3.0
2.0
14125
15.8
12.2
4
5.5
4.0
4–4MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 4: OPERATIONOPERATION
H4, HH1000 Mb FX
(Gigabit)
H5, HI1000 Mb FX
(Gigabit)
H6, HJ1000 Mb FX
(Gigabit)
Note
Single-Mode 2513109/125-3.0-21 16401845
Single-Mode 4015509/125-5.0-22 15601768
Single-Mode 7015509/125-2.0-22 189020100
* The use of either multi-mode or single-mode fiber to operate at 100Mbps speed over
long distances (i.e., in excess of approx. 400 meters) can be achieved only
if the following
factors are both applied:
• The 100Mb fiber segment must operate in full-duplex (FDX) mode, i.e. the fullduplex (factory default) setting for 100Mbps fiber ports must be used, and
• The worst-case OPB of the fiber link must be greater than the fiber cable’s passive
Attenuation.
(Attenuation = Cable loss + LED aging loss + Insertion loss + safety factor)
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–5
OPERATIONCHAPTER 4: OPERATION
4.2Multilink ML1200 Managed Field Switch Port Modules
This chapter describes each Port Module (PM), including appearance, functionality, and
status displays.
4.2.1Inspecting the Package and Product
This section applies only to Port Modules shipped as separate items, i.e., ML1200 PMs that
are not factory installed.
Examine the shipping container for obvious damage prior to installing a ML1200 PM; notify
the carrier of any damage you believe occurred during shipment. Inspect the contents of
this package for any signs of damage and ensure that the items listed below are included.
The package should contain:
• 1 or more ML1200 Port Moduless
• Installation instructions with illustrations
Observing proper ESD grounding procedures, remove the ML1200 PM(s) from the shipping
container. Be sure to keep the shipping container should you need to ship any of the PMs
separately at a later date. In the event there are items missing or damaged, contact your
supplier. If you need to return the unit, use the original shipping container if possible. Refer
to Chapter 5 for specific return procedures.
4.2.2ML1200 Modules
An important feature of the Multilink ML1200 is the use of Port Modules for flexible mixedmedia connectivity to RJ-45 copper and various fiber media. The first four ports (1,2,3 & 4)
of the Multilink ML1200 Switches are fixed RJ-45 copper ports with dual-speed 10/
100Mbps auto-negotiating capability. Additionally the switch can accept up to three Port
Modules to provide the user with up to 12 additional ports (16 total) providing a wide
selection of Ethernet copper and fiber media connections with 10, 100 and 1000Mbps
capability and up to 70km.
Note
The ML1200 Port modules are not identical to the port modules used in other Multilink
products such as the ML2400 and ML1600. For information about other Multilink
products, please see the applicable manual. For a list of ML1200 Port Modules, refer to
Section 2.1.
Each ML1200 Port Module (PM) is individually described in the sections that follow.
For the fiber modules in slot D, the operational description is the same as the
corresponding fiber modules configured in slots B and C described below.
The C8 Module is two port ST fiber module at 100MB. The module is equipped with dualmode ST-type connectors and dual speed copper ports. The ST-connector functions as a
fiber optic transceiver to support 100BASE-FX network segments. When installed in a
4–6MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 4: OPERATIONOPERATION
Multilink ML1200 Managed Switch, the copper port supports the standard distance 100m
on each port and the fiber port supports fiber optic cable distances up the IEEE-standard
100Mbps distance limits, i.e., typically 2km at full-duplex and 412m at half-duplex.
Each port has an Activity (ACT) LED indicating packets being received. A Link (LK) LED
indicates proper connectivity with the remote device when lit , and FDX/HDX LED to
indicate full-duplex mode when lit (half-duplex when off).
The C7 Module is a two port Fiber module that looks similar to the 100MbFiber module with
the exception of 10Mb speed at the ST fiber module. The ST-connector functions as a fiber
optic transceiver to support 10BASE-FX network segments. When installed in a Multilink
ML1200 Managed Switch, the fiber port supports fiber optic cable distances up the IEEEstandard 10Mbps distance limits, i.e., typically 2km at full-duplex and half-duplex.
Each port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that
indicates proper connectivity with the remote device when lit , and an FDX/HDX LED to
indicate full-duplex mode when lit (or half-duplex when off).
The C9 Module is two port module equipped with 2 multi-mode 100Mbps fiber optic
transceivers. This is similar to the C8 Module. It has the same LEDs indicating port activity
(ACT), Link (LK), and FDX / HDX and 10/100 operation, as well as the same face-plate
lettering. The difference is that the C9 Module is equipped with SC-type "snap-in" fiber port
connector instead of an ST-type.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–7
The CB Module is also a Fiber module equipped with 2 Single-mode (Long Reach) SC-type
connectors. It provides a long reach Fiber function in one module to the ML1200 Switches,
supporting 100Mb single-mode (Long-Reach) fiber network segments.
The CB Module, when installed in a Multilink ML1200 Switch, supports single-mode fiber
cable lengths of as much as 40+ Km (see Power Budget, Section 4.5). Each port has an
Activity (ACT) LED indicating packets being received, a Link (LK) LED indicating proper
connectivity with the remote device when lit, and a FDX/HDX LED indicating full-duplex
mode when lit (or half-duplex when off).
The C6 Module is also a Combo module equipped with 2 dual speed copper ports and 1
Multi-mode SC-type connector. It provides an advantage through combining copper and
Fiber functions in one module that supports two copper and one multi-mode fiber network
segments.
The C6 Module, when installed in a Multilink ML1200-Field Switch, operates on copper at
100m distances. The Fiber is multi-mode and cable lengths can be as much as 2 Km (see
Power Budget, Section 4.5)
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Each port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that
indicates proper connectivity with the remote device when lit , and a FDX/HDX LED to
indicate full-duplex mode when lit (or half-duplex when off). The 10/100 LED indicates
100Mbps speed when lit and at 10Mbps speed when off.
4.2.2.6 CC Module, 4 @100Mb multi-mode FX , MTRJ Small-Form-factor
The CC Module is a multi-mode fiber optic 4-port module equipped with a small-formfactor MTRJ-type connector. It looks almost like an RJ-45 port, but it is black in color. The
MT-RJ’s small compact size connector and ease of connection make it a good choice for
100Mbps “fiber-to-the-desktop” Ethernet connectivity. When installed in a Multilink
ML1200 Switch, it supports fiber optic cable distances up the IEEE-standard 100Mbps
distance limits, i.e., typically 2km at full-duplex or half-duplex.
The functionality of this 100BASE-FX multi-mode 4-port module is essentially the same as
the ST and SC-types. It has the same LEDs per port indicating port activity (ACT), Link (LK),
and FDX or HDX operation.
4.2.2.7 C3 Module, “COMBO” 2@ 10/100Mbps RJ-45 and 2@100Mb multi-mode FX ,
MTRJ Small-FF
The C3 Module is a combo module with copper and fiber (Small Form Factor) MTRJ type
ports. The small size of MTRJ connectors provides an advantage of placing more ports on
one module. The C3 Module is equipped with Two 10/100 RJ-45 ports and Two MTRJ fiber
ports.
When installed in a Multilink ML1200 Switch, it supports the standard distances as per the
media. Each port has an Activity (ACT) LED indicating packets being received, a Link (LK)
LED that indicates proper connectivity with the remote device when lit , and a FDX/HDX LED
to indicate full-duplex mode when lit (or half-duplex when off). The 10/100 LED indicates
100Mbps speed when lit and at 10Mbps speed when off.
The CD Module is a Four-port multi-mode fiber LC connector “small-form-factor” used
primarily in 100Mbps fiber-to-the-desktop links. When installed in a Multilink ML1200
Switch, it supports fiber optic cable distances up to the IEEE-standard 100Mbps distance
limits, i.e., typically 2km at full-duplex and 412m at half-duplex.
The compact size of the LC Connector reduces the size of wiring panels in wiring closets
while providing the advantage of “future-proof” fiber optic technology.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–9
OPERATIONCHAPTER 4: OPERATION
The cable end is a “plug-in” connector with both fiber strands terminated in one housing
that cannot be improperly inserted. Each port has an Activity (ACT) LED indicating packets
being received, a Link (LK) LED indicating proper connectivity with the remote device when
lit, and a FDX/HDX LED indicating full-duplex mode when lit (or half-duplex when off).
The C4 Module module is a combo module with a combination of copper and mm Fiber
(Small Form Factor) LC-type ports. The small size of LC connectors allows more ports on
one module. The C4 Module is equipped with two 10/100 RJ-45 ports and two LC multimode fiber ports.
When installed in a Multilink ML1200 Switch, it supports the standard distances as per the
media. Each port has an Activity (ACT) LED indicating packets being received, a Link (LK)
LED that indicates proper connectivity with the remote device when lit , and a FDX/HDX LED
to indicate full-duplex mode when lit (or half-duplex when off). The 10/100 LED indicates
100Mbps speed when lit and at 10Mbps speed when off.
The C1 module supports Ethernet twisted pair segments of any standard length. It is
equipped with a Four-port RJ-45 connector, and offers 10/100 full / half-duplex autonegotiating capability on each port . The RJ-45 connector is shielded to minimize emissions
and will allow both unshielded twisted pair (UTP) and shielded twisted pair (STP) cable
connections.
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Each port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that
indicates proper connectivity with the remote device when lit , a FDX/HDX LED to indicate
full-duplex mode when lit (or half-duplex when off), and a “10/100” LED indicating 100Mb
when lit (or 10 Mbps when off).
Note
The 10/100 RJ-45 ports are supported with Auto-negotiation and Auto-crossover (MDIX),
which allow the RJ-45 ports to automatically Link with any RJ-45 device and eliminate the
use of cross-over cable.
Note
For Power Substations: In support of the IEEE 1613 Class 2 standard, GE Multilin advises
that, for substation applications, the RJ-45 ports are intended for connectivity to other
communication equipment such as routers or telecommunication multiplexers installed in
close proximity (i.e., less than 2 meters or 6.5ft) to the ML1200. It is not recommended to
use these ports in substation applications to interface to field devices across distances
which could produce kigh (greater than 2500V ) levels of ground potential rise (GPR) during
line-to-ground fault conditions. The ML1200 passes the 1613specifications for zero packet
loss with fiber ports & with RJ-45 ports used as indicated here.
4.2.2.11 PoE power-pass-through, Base unit Model ML1200-48P, 10/100Mb 4-port
The LEDs on PoE ports are slightly different compared to regular (non-PoE) RJ-45 modules..
When the PoE port is in use, the PoE LED is ON when connected properly to a 803.af
compliant PD device on that port. When non-PoE devices are connected, the PoE LED is
OFF. Operation of Ethernet data traffic is not affected by PoE.
LINK and ACTIVITY LEDS are combined on the PoE modules into one LED that is marked as
LINK/ACT.
PoE LEDs Summary
• For PoE devices, each RJ-45 PoE port supports only 802.3af complaint devices. The
PoE LED is ON when the attached PD is drawing power from the port.
• For non-PoE devices connected, the PoE port will act as a normal RJ-45 port and
the PoE LED is OFF. No power is being sent out from the port.
• The PoE ports in Multilink with 48VDC power input act as a pass-through, so the
48VDC power source must be strong enough to provide power to the Multilink
switch and to all the 4 RJ-45 ports with PD devices connected (up to 15 watts per
PoE port).
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–11
OPERATIONCHAPTER 4: OPERATION
• In the case where the 48VDC power in not internally connected and no power is
coming to the PoE ports for some reason, all the PoE port LEDs are ON
simultaneously to indicate a trouble condition. The ports will still operate properly
for data traffic.
4.2.2.12 SFPs, Gigabit (1000Mbps) port modules
The Multilink ML1200 offers a Gigabit option with multiple choices of copper 10/100/
1000Mbps or Gigabit SFP Fiber modules for the modular slot. While up to two Gigabit
modules (maxm.) can be configured in the modular slot C only.
The ML1200 Modules provide a GBIC opening for insertion of industry-standard SFPs to
provide Gigabit (Gb) media flexibility. SFP fiber Transceivers are available with both multimode (550m) at 850nm and single-mode at 1330nm (10, 25, 40, 70)km fiber options, and
for Gigabit copper as well, with new models appearing often.
The 1000Mb Gigabit SFP fiber-port modules on the Multilink ML1200 are normally set
(factory default) to operate at AUTO mode for best fiber distance and performance. Only
two Gigabit ports can be configured on a Mangum ML1200 managed switch in slot D.
There are three LEDs provided on each SFP Gigabit port module. The SFP Gigabit fiber has
LEDs that indicate LK (Link status) and ACT (receiving activity) when lit and F/H (on for Full
and OFF for half duplex) for that port.
The copper Gigabit port supports 10/100/1000Mb speeds. The three LED’s show the speed
the connection has achieved. It is set as AUTO by default. All other LEDs are the same as
the SFP fiber.
4.2.2.13 Troubleshooting
All Multilink Ethernet products are designed to provide reliability and consistently high
performance in all network environments. The installation of a Multilink ML1200 Switch is
a straightforward procedure (see INSTALLATION, Section 3.0). The operation is also
straightforward and is discussed in Section 4.
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
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described in this section or if the Multilink ML1200 Switch is not performing as expected, do
not attempt to repair the unit; instead contact your supplier for assistance or contact GE
Multilin Customer Support .
4.2.3Before Calling for Assistance
1.If difficulty is encountered when installing or operating the unit, refer back to
the Installation Section of the applicable chapter of this manual. Also check
to make sure 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.Make sure that DC power is properly attached to each Multilink ML1200
Switch unit. Use the PWR LEDs to verify each unit is receiving power.
4.If the problem is isolated to a network device other than the Multilink ML1200
Switch product, 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 Step 5 below. If the problem is corrected, the Multilink ML1200 Switch and
its associated cables are functioning properly.
5.If the problem continues after completing Step 4 above, contact your supplier
of the Multilink ML1200 Switch unit or if unknown, contact GE Multilin for
assistance.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL4–13
OPERATIONCHAPTER 4: OPERATION
4–14MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
Digital Energy
Multilin
Multilink ML1200
Managed Field Switch
Chapter 5: IP Addressing
IP Addressing
5.1IP Address and System Information
5.1.1Overview
It is assumed that the user has familiarity with IP addresses, classes of IP addresses and
related netmask schemas (for example, class A, B, and C addressing).
Without an IP address, the switch operates as a standalone Layer 2 switch. Without an IP
address, you cannot:
• Use the web interface to manage the switch
• Use telnet to access the CLI
• Use any SNMP Network Management software to manage the switch
• Use NTP protocol or an NTP server to synchronize the time on the switch
• Use TFTP or FTP to download the configurations or upload software updates
• Run ping tests to test connectivity
To set the IP address, please refer to section 1.5.6: Setting the IP Parameters. Once the IP
address is set, the CLI can be accessed via telnet as well as the console interface. From
now on, all commands discussed are accessible from the command line interface,
irrespective of access methods (i.e. serial port or in band using telnet).
To verify the IP address settings using the command line interface, the
command can be used as follows:
ML1200> show ipconfig
IP Address:3.94.247.41
Subnet Mask:255.255.252.0
Default Gateway: 3.94.244.1
ML1200>
To verify the IP address using the EnerVista Secure Web Management software,
show ipconfig
Z Select the Administration > System menu item to view.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–1
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
Z Edit the IP address information.
Besides manually assigning IP addresses, there are other means to assign an IP address
automatically. The two most common procedures are using DHCP and bootp.
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5.2Importance of an IP Address
5.2.1DHCP and bootp
DHCP is commonly used for setting up addresses for computers, users and other user
devices on the network. bootp is the older cousin of DHCP and is used for setting up IP
addresses of networking devices such as switches, routers, VoIP phones and more. Both of
them can work independent of each other. Both of them are widely used in the industry. It's
best to check with your network administrator as to what protocol to use and what the
related parameters are. DHCP and bootp require respective services on the network. DHCP
and bootp can automatically assign an IP address. It is assumed that the reader knows
how to setup the necessary bootp parameters (usually specified on Linux/UNIX systems in
the
/etc/boopttab directory).
5.2.2bootp Database
Bootp keeps a record of systems supported in a database - a simple text file. On most
systems, the
entry by which the
and subnet mask of the switch would be as follows:
bootp service is not started as a default and has to be enabled. A sample
bootp software will look up the database and update the IP address
ML1200 is a user-defined symbolic name for the switch.
•
•
ht is the hardware type. For the MultiLink family of switches, set this to ether (for
Ethernet). This tag must precede the
ha is the hardware address. Use the switch's 12-digit MAC address.
•
•
ip is the IP address to be assigned to the switch.
sm is the subnet mask of the subnet in which the switch is installed.
•
Each switch should have a unique name and MAC address specified in the
entry
5.2.3Configuring DHCP/bootp/Manual/AUTO
By default, the switch is configured for auto IP configuration. DHCP/bootp/manual can be
enabled with the command line interface by using the
following syntax:
set bootmode=<dhcp|bootp|manual|auto> bootimg=<enable|disable>
bootcfg=<enable|disable>
ha tag.
bootptab table
set bootmode command with the
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–3
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
The bootimg argument is only valid with the bootp type. This option allows the switch to
load the image file from the bootp server. This is useful when a new switch is placed on a
network and the IT policies are set to load a specific image which is supported and tested
by IT personnel.
Likewise, the
bootcfg argument is valid only with the bootp type. This option allows the
switch to load the configuration file from the bootp server. This is useful when a new
switch is put on a network and the specific configurations are loaded from a centralized
bootp server
The following example changes the boot mode of the switch:
ML1200# set bootmode type=bootp bootimg=enable bootcfg=disable
Network application image download is enabled.
Network application config download is disabled.
Save Configuration and Restart System
ML1200#
Alternatively, the DHCP/bootp/manual can be enabled through the EnerVista Secure Web
Management software as shown below.
Z Select the Administration > System menu item.
Z Click Edit.
Z Alternatively, select items in the Administration > Set menu to
individually modify the boot mode, date and time, log size, etc.
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5.2.4Using Telnet
Z After the changes are completed for each section, click OK to
register the changes.
Note that if the IP address is changed, the
http session has to be restarted with the new IP
address.
The telnet client is enabled on the ML1200. The ML1200 supports five simultaneous
sessions on a switch: four telnet sessions and one console session. This allows many users
to view, discuss, or edit changes to the ML1200. This is also useful when two remote users
want to view the switch settings. The telnet client can be disabled through the command
line interface by using the
telnet disable command with the following syntax:
telnet <enable|disable>
Telnet can also be disabled for specific users with the
useraccess command. Refer to
section 1.5.8: User Management, for details.
Multiple telnet sessions started from the CLI interface or the command line are serviced by
the ML1200 in a round-robin fashion (that is, one session after another). If one telnet
session started from an ML1200 is downloading a file, the other windows will not be
serviced until the file transfer is completed.
The following example changes the telnet access. In this case, the enable command was
repeated without any effect to the switch.
ML1200# configure access
ML1200(access)##
Access to Telnet already enabled
ML1200(access)## exit
ML1200#
telnet enable
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IP ADDRESSINGCHAPTER 5: IP ADDRESSING
The show console command can show the status of the telnet client as well as other
console parameters. The following example reviews the console parameters with the
Users can telnet to a remote host from the MultiLink family of switches using the following
syntax.
telnet <ipaddress> [port=<port number>]
The default port for telnet is 23.
To start a telnet session through the EnerVista Secure Web Management software,
Z Select the Administration > Telnet menu item.
The default port for telnet is 23.
The ML1200 will time out an idle telnet session. It may be useful to see who is currently
connected to the switch. It may also be useful for a person to remotely terminate a telnet
session. To facilitate this, the ML1200 supports the following two commands:
show session
kill session id=<session>
5–6MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
SL# Sessn Id ConnectionUser Name User Mode
11163.10.10.14managerManager
22163.11.11.1peterManager
33163.12.12.16operatorOperator
ML1200#
Session Terminated
ML1200#
kill session id=3
In the above example, the user with username “peter” is given telnet access. Then multiple
users telnet into the switch. This is shown using the
operator session is then terminated using the
show session command. The user
kill session command.
Note
A maximum of four simultaneous telnet sessions are allowed at any time on the switch.
The commands in these telnet windows are executed in a round robin fashion; that is, if
one window takes a long time to finish a command, the other windows may encounter a
delay before the command is completed. For example, if one window is executing a file
download, the other windows will not be able to execute the command before the file
transfer is completed. As well, if a outbound telnet session is started from the switch
(through a telnet window) then other windows will not be able to execute a command until
the telnet session is completed.
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IP ADDRESSINGCHAPTER 5: IP ADDRESSING
5.3Setting Parameters
5.3.1Setting Serial Port Parameters
To be compliant with IT or other policies the console parameters can be changed from the
CLI interface. This is best done by setting the IP address and then telnet over to the switch.
Once connected using telnet, the serial parameters can be changed. If you are using the
serial port, remember to set the VT-100 emulation software properties to match the new
settings.
The serial port parameters are modified using the
set serial command with the
following syntax:
set serial [baud=<rate>] [data=<5|6|7|8>] [parity=<none|odd|even>]
[stop=<1|1.5|2>] [flowctrl=<none|xonxoff>]
Where <rate> = standard supported baud rates.
Note
Changing these parameters through the serial port will cause loss of connectivity. The
terminal software parameters (e.g. HyperTerminal) will also have to be changed to match
the new settings.
To see the current settings of the serial port, use the
The system parameters can be queried and changed. To query the system parameters,
two commands are frequently used:
commands is illustrated below.
show sysconfig and show setup. Usage for both
The following example lists system parameters using the
show setup command. Most
parameters here cannot be changed.
ML1200# show setup
Version: ML1200 build 3.3.0 March 19 2009 14:22:43
MAC Address: 00:20:06:27:0a:e0
IP Address: 3.94.247.41
Subnet Mask: 255.255.252.0
Gateway Address: 3.94.244.1
CLI Mode: Manager
System Name: ML1200
System Description: 12 Port Modular Ethernet Switch
System Contact: multilin.tech@ge.com
System Location: Markham, Ontario
System ObjectId: 1.3.6.1.4.1.13248.12.7
ML1200#
The following example lists system parameters using the show sysconfig command.
Most parameters here can be changed.
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ML1200# show sysconfig
System Name: ML1200
System Contact: multilin.tech@ge.com
System Location: Markham, Ontario
Boot Mode: manual
Inactivity Timeout(min): 120
Address Age Interval(min): 300
Inbound Telnet Enabled: Yes
Web Agent Enabled: Yes
Time Zone: GMT-05hours:00minutes
Day Light Time Rule: Canada
System UpTime: 7 Days 12 Hours 30 Mins 46
Secs
ML1200#
System variables can be changed. Below is a list of system variables which GE
recommends changing.
System Name: Using a unique name helps you to identify individual devices in a
•
network.
System Contact and System Information: This is helpful for identifying the
•
administrator responsible for the switch and for identifying the locations of
individual switches.
To set these variables, change the mode to be SNMP configuration mode from the
manager mode using the following syntax
The following command sequence sets the system name, system location and system
contact information.
5.3.3Date and Time
It may be necessary to set the day, time or the time zone manually. This can be done by
using the
syntax:
set command with the necessary date and time options with the following
set timezone GMT=[+ or -] hour=<0-14>
min=<0-59>
set date year=<2001-2035> month=<1-12> day=<1-31>
[format=<mmddyyyy|ddmmyyyy|yyyymmdd>]
set time hour=<0-23> min=<0-59> sec=<0-59> [zone=GMT[+/-]hh:mm]
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IP ADDRESSINGCHAPTER 5: IP ADDRESSING
To set the time to be 08:10 am in the -5 hours from GMT (Eastern Standard Time) and to set
the date as 11 May 2005, the following sequence of commands are used.
ML1200# set time hour=8 min=10 sec=0 zone=GMT-5:00
Success in setting device time
ML1200# show time
Time: 8:10:04
ML1200# show timezone
Timezone: GMT-05hours:00minutes
ML1200# set date year=2005 month=5 day=11
Success in setting device date
ML1200# show date
System Date: Wednesday 15-11-2005 (in mm
-dd-yyyy format)
ML1200#
The syntax for other date and time commands are:
set timeformat format=<12|24>
set daylight country=<country name>
The following command sequence sets the daylight location:
ML1200# set daylight country=Canada
Success in setting daylight savings to the
given location/country Canada
ML1200# show daylight
Daylight savings location name: Canada
ML1200#
The date and time can only be set through the command line interface software.
5.3.4Network Time
Many networks synchronize the time using a network time server. The network time server
provides time to the different machines using the Simple Network Time Protocol (SNTP). To
specify the SNTP server, one has to
1.Set the IP parameters on the switch
2.Define the SNTP parameters
To set the SNTP parameter with the command line software, enter the SNTP configuration
mode from the manager. The
setup the time synchronization automatically from the SNTP server. Note it is not sufficient
to setup the SNTP variables. Make sure to setup the synchronization frequency as well as
enable SNTP. The syntax for the above commands is shown below.
setsntp server = <ipaddress> timeout = <1-10>
retry = <1-3>
sync [hour=<0-24>] [min=<0-59>] (default = 24
hours)
sntp [enable|disable]
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setsntp, sync, and sntp commands can then be used to
CHAPTER 5: IP ADDRESSINGIP ADDRESSING
To set the SNTP server to be 3.94.210.5 (with a time out of 3 seconds and a number of
retries set to 3 times); allowing the synchronization to be ever 5 hours, the following
sequence of commands are used
ML1200# sntp
ML1200(sntp)##
SNTP server is added to SNTP server
database
setsntp server=3.94.210.5 timeout=3 retry=3
ML1200(sntp)## sync hour=5
ML1200(sntp)##
SNTP is already enabled.
sntp enable
ML1200(sntp)## exit
ML1200(sntp)#
SNTP parameters can be configured through the EnerVista Secure Web Management
software with the Configuration > SNTP menu item. The SNTP menu allows the time zone
(hours from GMT) to be defined along with other appropriate parameters on setting the
time and synchronizing clocks on network devices.
The edit button allows editing of the SNTP parameters as shown below. Adding or deleting
SNTP servers is accomplished by using the add and delete buttons. Clicking the edit button
allows the specific SNTP parameter settings to be modified.
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IP ADDRESSINGCHAPTER 5: IP ADDRESSING
After the proper SNTP values are entered, click OK to register the changes, or click Cancel
to back out from the changes made.
To add an SNTP server, click the add button on the Configuration > SNTP menu. The menu
prompts you to add IP address of an SNTP server, the time out in seconds and the number
of retries, before the time synchronization effort is aborted. The Sync Now button allows
synchronization as soon as the server information is added.
Note
If your site has internet access, there are several SNTP servers available online. A quick
search will yield information about these servers. You can use the IP address of these
servers; however, please ensure the server can be reached by using the
The
ping command can also be launched from the EnerVista software.
ping command.
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The Time Out value is in seconds. Note the time server can be a NTP server available on
the Internet. Ensure the IP parameters are configured for the switch and the device can be
pinged by the switch. Once the server is added, it is listed with the other SNTP servers.
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IP ADDRESSINGCHAPTER 5: IP ADDRESSING
5.4System Configuration
5.4.1Saving and Loading – Command Line
Note
Place the Switch offline while transferring Setting Files to the Switch.
When transferring Settings Files from one Switch to another, the IP address of the
originating Switch will also be transferred. The user must therefore reset the IP address on
the receiving Switch before connecting to the network.
Configuration changes are automatically registered but not saved; that is, the effect of the
change is immediate. However, if power fails, the changes are not restored unless they
saved using the
save command. It is also a good practice to save the configuration on
another network server using the tftp or ftp protocols. Once the configuration is saved, it
can be loaded to restore the settings. At this time, the saved configuration parameters are
not in a human readable format. The commands for saving and loading configurations on
the network are:
Ensure the machine specified by the IP address has the necessary services running. For
serial connections, x-modem or other alternative methods can be used. In most situations,
the filename must be a unique, since overwriting files is not permitted by most ftp and tftp
servers (or services). Only alphanumeric characters are allowed in the filename.
The following example illustrated how to save the configuration on a tftp server
Do you wish to upload the configuration?
['Y' or 'N'] Y
The saveconf and loadconf commands are often used to update software. Before the
software is updated, it is advised to save the configurations. The re-loading of the
configuration is not usually necessary; however, in certain situations it maybe needed and
it is advised to save configurations before a software update. The
loadconf command
requires a reboot for the new configuration to be active. Without a reboot the older
configuration is used by the MultiLink family of switches.
The
saveconf and loadconf commands are often used to update software to the
ML1200. These commands will be deprecated in the version 2.x and above, and replaced
with the
instead of
ftp, tftp, or xmodem commands. It is advised to begin using these commands
saveconf and loadconf.
5.4.2Config file
Multilink software can now use the ftp or tftp (or xmodem if using the CLI) to upload and
download information to a server running the proper services. One useful capability
provided in Multilink software is export of the CLI commands used to configure the switch.
To do this, use Config Upload/Download.
5–14MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 5: IP ADDRESSINGIP ADDRESSING
<ML1200 -conf-1.0>
################################################################
# Copyright (c) 2001-2005 GE Multilin, Inc All rights reserved.
# RESTRICTED RIGHTS
# ---------------------------------
# Use, duplication or disclosure is subject to U.S. Government
# restrictions as set forth in Sub-division (b)(3)(ii) of the
# rights in Technical Data and Computer Software clause at
# 52.227-7013.
#
# This file is provided as a sample template to create a backup
# of GE MultiLink switches. As such, this script
# provides insights into the configuration of GE MultiLink
# switches settings. GE Multilin, Inc. recommends that modifications of this
# file and the commands should be verified by the User in a
# test environment prior to use in a "live" production network.
# All modifications are made at the User's own risk and are
# subject to the limitations of the GE MultiLink software End User
# License Agreement (EULA). Incorrect usage may result in
# network shutdown. GE Multilin, Inc. is not liable for incidental or
# consequential damages due to improper use.
################################################################
***This is a Machine Generated File.
***Only the SYSTEM config block is editable.
***Editing any other block will result in error while loading.
##########################################################
# Hardware Configuration - This area shows the type of #
# hardware and modules installed. #
##########################################################
[HARDWARE]
type=ML1200
slotB=8 Port TP Module
##########################################################
# System Manager - This area configures System related #
# information. #
##########################################################
Using Config Download, examination of the contents of the saved file would appear as
shown below:
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–15
1.A config file allows only certain portions of the file to be edited by a user. Changing
any other part of the file will result in the system not allowing the file to be loaded, as
the CRC computed and stored in the file would not be matched. Should you want to
edit, edit the System portion of the file only. GE Multilin, Inc. recommends editing the
“script” file (see below)
2.File names cannot have special characters such as *#!@$^&* space and control
characters.
5–16MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
Using SWM, the need to display specific CLI commands for configuring capabilities is not
needed. The menus are modular and are alphabetically sorted to display each necessary
component in a logical manner. This section is repeated from the CLI manual, should the
need arise to view the necessary commands. The best way to view these commands is to
telnet to the switch using the Telnet menu from the Administration menu.
To display the configuration or to view specific modules configured, the ‘show config’
command is used as described below.
Syntaxshow config [module=<module-name>]
Where module-name can be:
NameAreas affected
system
event Event Log and Alarm settings
port Port settings, Broadcast Protection and QoS settings
bridge Age time setting
stp STP, RSTP and LLL settings
ps Port Security settings
mirror Port Mirror settings
sntp SNTP settings
llan VLAN settings
gvrp GVRP settings
snmp SNMP settings
web Web and SSL/TLS settings
tacacs TACACS+ settings
auth 802.1x Settings
igmp IGMP Settings
smtp SMTP settings
IP Configuration, Boot mode, Users settings (e.g. login
names, passwords)
If the module name is not specified the whole configuration is displayed.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–17
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
# System Manager - This area configures System related #
FIGURE 5–4: Displaying configuration for different modules.
Note – multiple modules can be specif ied on the command line
5.4.4Saving Configuration
It is advisable to save the configuration before updating the software, as it may be
necessary in certain situations. The loadconf command requires a reboot to activate the
new configuration. Without a reboot, the ML1200 used the previous configuration. When
reboot is selected, the user is prompted as follows:
Reboot? ['Y' or 'N']
Select “Y”. The ML1200 will prompt:
Save Current Configuration?
Select “N”.
5–20MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 5: IP ADDRESSINGIP ADDRESSING
Additional capabilities have been added to save and load configurations. The commands
are:
type:Specifies whether a log file or host file is uploaded or downloaded. This can also
perform the task of exporting a configuration file or uploading a new image to
the switch
host, ip, file, user, pass: These parameters are associated with ftp/tftp server
communications.
The user can save the configuration in old (v2 format) and new (v3 format). The v3 format
must be used to utilize the ASCII and CLI Script capability.
save [format=v2|v3]
Note
With release 1.7 and higher, the configuration can be saved in the older format (binary
object) or in a new format as an ASCII file. The new format is recommended by GE Multilin.
Use the old format only if there are multiple MultiLink switches on the network running
different versions of software. GE Multilin recommends upgrading all switches to the most
current software release.
To ease the process of uploading and executing a series of commands, the ML1200 can
create a host (equivalent to creating a host table on many systems). The command for
creating a host is:
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–21
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
###############################################################
#
# Copyright (c) 2001-2005 GE Multilin, Inc All rights reserved.
# RESTRICTED RIGHTS
# ---------------------------------
# Use, duplication or disclosure is subject to U.S. Government
# restrictions as set forth in Sub-division (b)(3)(ii) of the
# rights in Technical Data and Computer Software clause at
# 52.227-7013.
#
# This file is provided as a sample template to create a backup
# of GE MultiLink switches configurations. As such,
# this script provides insights into the configuration of GE MultiLink switch's settings.
# GE Multilin, Inc. recommends that modifications of this
# file and the commands should be verified by the User in a
# test environment prior to use in a "live" production network.
# All modifications are made at the User's own risk and are
# subject to the limitations of the GE MultiLink MNS End User
# License Agreement (EULA). Incorrect usage may result in
# network shutdown. GE Multilin, Inc. is not liable for incidental or
# consequential damages due to improper use.
###############################################################
#
##########################################################
# System Manager - This area configures System related #
# information. #
##########################################################
set bootmode type=manual
ipconfig ip=192.168.5.5 mask=0.0.0.0 dgw=0.0.0.0
set timeout=10
access
telnet enable
snmp enable
web=enable
exit
##########################################################
# User Accounts - This area configures user accounts for #
# accessing this system. #
##########################################################
user
add user=manager level=2
passwd user=manager
manager
<additional lines deleted for succinct viewing>
5.4.5Script File
Script file is a file containing a set of CLI commands which are used to configure the
switch. CLI commands are repeated in the file for clarity, providing guidance to the user
editing the file as to what commands can be used for modifying variables used by MNS.
The script file does not have a check sum at the end and is used for configuring a large
number of switches easily. As with any configuration file that is uploaded, GE Multilin, Inc.
recommends that modifications of this file and the commands should be verified by the
user in a test environment prior to use in a "live" production network.
The script file will look familiar to people familiar with the CLI commands as all the
commands saved in the script file are described in the CLI User Guide. A sample of the
script file is shown below.
5–22MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 5: IP ADDRESSINGIP ADDRESSING
In the above example, note that all the commands are CLI commands. This script provides
an insight into the configuration of GE MultiLink switches settings. GE Multilin, Inc.
recommends that modifications of this file and the commands should be verified by the
User in a test environment prior to use in a "live" production network
To ease the process of uploading the script files, use the Script Upload/Download
capability described above.
5.4.6Saving and Loading – EnerVista Software
Note
Place the Switch offline while transferring Setting Files to the Switch.
When transferring Settings Files from one Switch to another, the IP address of the
originating Switch will also be transferred. The user must therefore reset the IP address on
the receiving Switch before connecting to the network.
After configuration changes are made, all the changes are automatically saved. It is a
good practice to save the configuration on another server on the network using the
or
ftp protocols. Once the configuration is saved, the saved configuration can be reloaded
tftp
to restore the settings. At this time, the saved or loaded configuration parameters are not
in a human readable format.
The following figure illustrates the FTP window, which can be used to save the
configuration, as well as up load new images or reload a saved configuration.
Ensure the machine specified by the IP address has the necessary services running on it .
For serial connections, x-modem or other alternative methods can be used. Generally, the
filename name must be a unique filename, as over-writing files is not permitted by most
FTP and TFTP servers (or services).
The following figure illustrates saving the configuration on a TFTP server. Note that the
menu is similar to the FTP screen described earlier.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–23
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
This process can also be used to update new software to the managed MultiLink switches.
Before the software is updated, it is advised to save the configurations. Reloading of the
configuration is not usually necessary, but in certain situations it may be needed, and it is
recommended that you save configurations before a software update. Make sure to
reboot the switch after a new configuration is loaded.
The file transfer operations allowed are:
1.Image Download (or Image Upload): Copy the ML1200 image from switch to
the server (or from the server to the switch). The “Image Upload” option is
commonly used to upgrade the ML1200 image on the switch.
2.Config Download (or Config Upload): Save the configuration of the switch on
the server (or load the saved configuration from the server to the switch). This
option is used to save a backup of the ML1200 configuration or restore the
configuration (in case of a disaster.)
3.Script Download (or Script Upload): Save the necessary CLI commands used
for configuration of the switch (or upload the necessary CLI commands
needed to configure the switch). This option is used to ease the repetitive task
of configuring multiple commands or reviewing all the commands needed to
configure the ML1200.
4.Host Download (or Host Upload): Save the host information. The hosts are
created by the Configuration - Access - Host commands
5.Log Upload - Save the log file on the ftp/tftp server
To save any changes,
Z Click on the save () icon.
The software will ask again if the changes need to be saved or
ignored.
5–24MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 5: IP ADDRESSINGIP ADDRESSING
Z If the changes need to be ignored, click on Cancel and reboot the
switch.
Z If the changes need to be saved, click on OK.
The following figures illustrate saving changes made after adding an SNTP server. This is
done by clicking on the Save icon to save current configuration
5.4.7Host Names
Instead of typing in IP addresses of commonly reached hosts, the ML1200 allows hosts to
be created with the necessary host names, IP addresses, user names, and passwords.
Z Use the Configuration > Access > Host menu to create host entries
as shown below.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–25
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
Z To add a host, click the Add button.
Z Fill in all the fields below to create the necessary host entries.
5–26MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 5: IP ADDRESSINGIP ADDRESSING
Z To delete or edit the entries, use the delete or edit icons next to each
entry shown above.
5.4.8Erasing Configuration
Kill Config option using SWM
To erase the configuration and reset the configurations to factory defaults, you can use
the kill config option from Administration tab by selecting kill config.
Note
User also has the option to save one module from defaulting back to factory defaults by
checking the module box before issuing kill Config command.
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL5–27
IP ADDRESSINGCHAPTER 5: IP ADDRESSING
In the example below “system” module box has been checked. In this case after kill Config
command is issued by pressing the OK button, the Switch will perform a factory dump
restoring all the Switch settings back to factory defaults except for the “System” settings
which will be retained.
When the OK button is pressed the Switch will issue the following warning messages; and
reboot the switch for it to revert back to the factory default settings with the exceptions of
modules opted not to be defaulted.
5–28MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
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