Comnet CNGE20FX4TX16MS, CNGE28FX4TX24MS2, CNGE28FX4TX24MSPOE2/48 Installation And Operation Manual
INSTALLATION AND OPERATION MANUAL
CNGE20FX4TX16MS
All Gigabit Managed Ethernet Switch
with (16) 10/100/1000TX + (4) 100/1000FX SFP Ports
This manual serves the following
ComNet Model Numbers:
CNGE20FX4TX16MS
The ComNet CNGE20FX4TX16MS Managed Ethernet Switch provides robust
transmission of (16) 10/100/1000BASE-TX and (4) 100/1000FX SFP ports, of gigabit
Ethernet data. Unlike most Ethernet switches, these environmentally hardened units
are designed for direct deployment in difficult out-of-plant or roadside operating
environments, and are available for use with either conventional CAT-5e copper or
optical transmission media. Diverse media selection allows for easy implementation
of point-to-point, linear add-drop, drop-and-repeat, star, or true self-healing ring and
mesh network system architectures. The 16 electrical ports support the 10/100/1000
Mbps Ethernet IEEE 802.3 protocol, and auto-negotiating and auto-MDI/ MDIX features
are provided for simplicity and ease of installation. All SFP ports utilize ComNet SFP
modules for fiber and connector type and distance. These network managed layer 2
switches are optically (100/1000 BASE-FX) and electrically compatible with any IEEE
802.3 compliant Ethernet devices. Plug-and-play design ensures ease of installation,
and no electrical or optical adjustments are ever required. The CNGE20FX4TX16MS
incorporates LED indicators for monitoring the operating status of the managed
switch and network. These units are DIN-rail or wall mountable.
INSTALLATION AND OPERATION MANUAL CNGE20FX4TX16MS
Contents
Regulatory Compliance Statement 4
Warranty 4
Disclaimer 4
Safety Indications 4
Federal Communication Commission Interference Statement 5
Declaration of Conformity 5
Safety Instructions 6
1.0 Product Overview 7
1.1 Specifications 7
1.2. Hardware Views 8
1.4. Packing List 10
2.0 Installation Guidelines 11
2.1. Warnings 11
2.2. Installation Guidelines 12
2.4. Verifying Switch Operation 13
2.5. Hardware Installation 14
2.6. Installing and Removing SFP Modules 17
2.7. Connecting the Switch to Ethernet Ports 20
2.8. Connecting the Switch to Console Port 21
2.10. Reset Button 22
3.0 Setup 23
3.1. First Time Setup 23
3.2. Command Line Interface Configuration 27
3.3. Web Browser Configuration 28
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4.0. Switch Management 29
4.1. Log In 29
4.2. Recommended Practices 30
4.3. Monitoring 31
4.4. System 37
4.5. L2 Switching 44
4.6. MAC Address Table 79
4.7. Security 82
4.8. QoS 96
4.9. Management 108
4.10 Diagnostics 130
4.11. Tools 140
APPENDIX 146
Troubleshooting 146
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Regulatory Compliance Statement
Product(s) associated with this publication complies/comply with all applicable regulations. Please
refer to the Technical Specifications section for more details.
Warranty
ComNet warrants that all ComNet products are free from defects in material and workmanship
for a specified warranty period from the invoice date for the life of the installation. ComNet will
repair or replace products found by ComNet to be defective within this warranty period, with
shipment expenses apportioned by ComNet and the distributor. This warranty does not cover
product modifications or repairs done by persons other than ComNet-approved personnel, and
this warranty does not apply to ComNet products that are misused, abused, improperly installed,
or damaged by accidents.
Please refer to the Technical Specifications section for the actual warranty period(s) of the
product(s) associated with this publication.
Disclaimer
Information in this publication is intended to be accurate. ComNet shall not be responsible for its
use or infringements on third-parties as a result of its use. There may occasionally be unintentional
errors on this publication. ComNet reserves the right to revise the contents of this publication
without notice.
Note. The PoE port may be considered SELV circuits, if:
» Not likely to require connection to an Ethernet network with outside plant routing including
campus environment; and
» The installation instructions clearly state that the ITE is to be connected only to PoE Networks
without routing to the outside plant.
Safety Indications
» The equipment can only be accessed by a service person or users who have been instructed.
» The equipment should be installed in the location that needs a tool or lock and key, or other
means of security, and controlled by a person of authority.
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Federal Communication Commission Interference Statement
For further certification information, please go to www.comnet.net
Declaration of Conformity
CE
This product has passed the CE test for environmental specifications when shielded cables are
used for external wiring. We recommend the use of shielded cables. Please contact your local
supplier for ordering information.
This product has passed the CE test for environmental specifications. Test conditions for passing
included the equipment being operated within an industrial enclosure. In order to protect the
product from being damaged by ESD (Electrostatic Discharge) and EMI leakage, we strongly
recommend the use of CE-compliant industrial enclosure products.
FCC Class A
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at their own
expense.
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Safety Instructions
Read these safety instructions carefully.
» Keep this user manual for later reference.
» Disconnect this equipment from any AC outlet before cleaning. Use damp cloth. Do not use
liquid or spray detergents for cleaning.
» For plug-in equipment, the power outlet socket must be located near the equipment and must
be easily accessible.
» Keep this equipment away from humidity.
» Put this equipment on a stable surface during installation. Dropping it or letting it fall may
cause damage.
» The openings on the enclosure allow for air convection. Protect the equipment from over-
heating. DO NOT COVER THE OPENINGS.
» Make sure the voltage of the power source is correct before connecting the equipment to the
power outlet.
» Position the power cord so that people cannot step on it. Do not place anything over the
power cord.
» All cautions and warning on the equipment should be noted.
» If the equipment is not used for a long time, disconnect it from the power source to avoid
damage by transient over voltage.
» Never pour any liquid into an opening. This may cause fire or electrical shock.
» Never open the equipment. For safety reasons, the equipment should be opened only by
qualified service personnel.
» If one of the following situations arises, get the equipment checked by service person nel:
› The power cord or plug is damaged.
› Liquid has penetrated into the equipment.
› The equipment has been exposed to moisture.
› The equipment does not work well, or you cannot get it to work according to the user manual
› The equipment has been dropped and damaged.
› The equipment has obvious signs of breakage.
» PoE requirements: The equipment is to be connected only to PoE networks without routing to
the outside plant.
» Do not leave this equipment in an environment where the storage temperature may go below
-40°C (-40°F) or above 75°C (167°F) this could damage the equipment. The equipment should
be in a controlled environment.
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1.0 Product Overview
1.1 Specifications
Specifications Description
Interface I/O Port 16 × 10/100/1000BaseT(X) +
4 × 100/1000Base-X SFP Port
Power Connector 4-pin screw terminal
Relay Connector 2-pin screw terminal
Physical Enclosure Metal Shell
Protection Class IP30
Installation Rack mounting
Dimensions (W x H x D) 2.91 × 4.13 × 5.98 in (7.4 × 10.5 × 15.2 cm)
LED Display System LED R.M., SYS, Alarm, Power 1, Power 2
Port LED Link/Activity/Speed
Environment Operating Temperature -40°C ~ 75°C (-40°F ~ 167°F)
Storage Temperature -40°C ~ 85°C (-40°F ~ 185°F)
Ambient Relative Humidity 10 ~ 95% (non-condensing)
Switch Properties MAC Address 8K-entry
Switching Bandwidth 56 Gbps
Power Power Consumption 15 W
Power Input 12 - 48VDC, Redundant power
Certifications Safety IEC EN60950, EN61010
EMC CE, FCC
EMI EN55022 Class A
EMS EN 61000-4-2 (ESD) Level 3
EN 61000-4-3 (RS) Level 3
EN 61000-4-4 (EFT) Level 3
EN 61000-4-5 (Surge) Level 3
EN 61000-4-6 (CS) Level 3
EN 61000-4-8 (Magnetic Field) Level 3
Shock IEC 60068-2-27
Freefall IEC 60068-2-32
Vibration IEC 60068-2-6
Railway Track Side EN 50121- 4
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1.2. Hardware Views
1.2.1 Front View
1
2
3
4
5
13
8
9
12
11
10
6
7
Front View
No. Item Description
1 Terminal Strip Power Supply Connector
2 SYS System Indicating LED
3 R.M. Ring Master Indicating LED
4 PWR1 Power 1 Indicating LED
5 PWR2 Power 2 Indicating LED
6 Alarm Alarm Indicating LED
7 Reset Allows for system soft reset or factory default reset
8 Console Port Use RS-232 to RJ-45 connecter to manage switch.
9 LNK /ACT Link activity LED for SFP ports
10 SFP FX Ports 100/1000BASE-X SFP ports
11 Speed 100/1000BASE-TX on RJ-45 port
12 LNK/AC T Link activity for RJ-45 Ports
13 RJ-45 TX Ports 10/100/1000BASE-T(X) Gigabit ports
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System LED Panel
Table 1-3. System LED Panel (Continued)
No. LED Name LED Color Description
2 SYS Green System is operational
Off System is powered down / powering up
3 R.M. Solid Green System is serving as Ring Master
4 PWR1 Solid Green Powered Up
Off Powered Down or Not Installed
5 PWR2 Solid Green Powered Up
Off Powered Down or Not Installed
6 Alarm Solid Red Defined Major Policies are Detected
Blinking Red Defined Minor Policies are detected
Off Powered Off or No Defined Policies Detected
SFP
9 LNK /ACT Orange 100 Mbps Speed over port
Green 1 Gbps Speed over port
RJ45
11 Speed Orange 100 Mbps Speed over port
Green 1 Gbps Speed over port
12 LNK/ACT Orange 100 Mbps Speed over port
Green 1 Gbps Speed over port
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Multi View of Switch
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1.4. Packing List
The product package you have received should contain the following items. If any of them are not
included or are damaged, please contact your local vendor for support.
» 1 × Industrial Ethernet Switch
» 1 × DIN Rail Mount Kit
» 1 × Wall Mount Kit
» 1 × Quick Start Guide
» 1 × Serial Console Cable
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2.0 Installation Guidelines
2.1. War nin gs
Warning: Before working on equipment that is connected to power lines, remove any jewelry
(including rings, necklaces, and watches). Metal objects can heat up when connected to power
and ground, which can cause serious burns or weld the metal object to the terminals.
» Exposure to chemicals can degrade the sealing properties of materials used in the sealed relay
device.
» It is not recommended to work on the system or connect or disconnect cables dur ing periods
of lightning activity.
» Before performing any of the following procedures, disconnect the power source from the DC
circuit.
» Read the installation instructions before connecting the system to its power source.
» This unit is intended for installation in restricted access areas. A restricted access area is
defined as an area that can be accessed only through the use of a special tool, lock and key, or
other means of security.
» The device must be grounded. Never defeat the ground conductor or operate the equipment
in the absence of a suitably installed ground conductor.
» This unit may have more than one power supply connection. All connections must be removed
to de-energize the unit.
» If the switch is to be installed in a hazardous location, ensure that the DC power source is
located away from the vicinity of the switch.
» The installation of the equipment must comply with all national and local electrical codes.
» Explosion Hazard - The area must be known to be nonhazardous before servicing or replacing
any components.
» Airflow Around The Switch Must Be Unrestricted.
To Prevent The Switch From Overheating, There Must Be The Following Minimum Clearances:
› Top and Bottom: 2.0 in (50.8 mm)
› Sides: 2.0 in (50.8 mm)
› Front: 2.0 in (50.8 mm)
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2.2. Installation Guidelines
» The following guidelines are provided to optimize the device performance. Review the
guidelines before installing the device.
» Make sure cabling is away from sources of electrical noise. Radios, power lines, and flu orescent
lighting fixtures can interference with the device performance.
» Make sure the cabling is positioned away from equipment that can damage the cables.
» Operating environment is within the ranges listed range, see “Specifications” on page 1.
» Relative humidity around the switch does not exceed 95 percent (non-condensing).
» Altitude at the installation site is not higher than 10,000 feet.
» In 10/100 and 10/100/1000 fixed port devices, the cable length from the switch to con nected
devices can not exceed 100 meters (328 feet).
» Make sure airflow around the switch and respective vents is unrestricted. Without proper
airflow the switch can overheat. To prevent performance degradation and dam age to the
switch, make sure there is clearance at the top and bottom and around the exhaust vents.
2.3. Environment and Enclosure Guidelines
Review these environmental and enclosure guidelines before installation:
This equipment is intended for use in a Pollution Degree 2 industrial environment, in over-voltage
Category II applications (as defined in IEC publication 60664-1), at altitudes up to 3 km (9842 ft)
without derating.
This equipment is considered Group 1, Class A industrial equipment, according to IEC/ CISPR
Publication 11. Without appropriate precautions, there may be potential difficulties ensuring
electromagnetic compatibility in other environments due to conducted as well as radiated
disturbance.
This equipment is supplied as open-type equipment. It must be mounted within an enclo sure
that is suitably designed for those specific environmental conditions that will be present and
appropriately designed to prevent personal injury resulting from accessibility to live parts. The
enclosure must have suitable flame-retardant properties to prevent or minimize the spread of
flame, complying with a flame-spread rating of 5VA, V2, V1, V0 (or equivalent) if nonmetallic. The
interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this
publication might contain additional information regarding spe cific enclosure-type ratings that are
required to comply with certain product safety certifica tions.
2.3.1 Connecting Hardware
In this instruction, it will explain how to find a proper location for your Modbus Gateways, and how
to connect to the network, hock up the power cable, and connect to the managed Ethernet switch.
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2.4. Verifying Switch Operation
Before installing the device in a rack or on a wall, power on the switch to verify that the switch
passes the power-on self-test (POST). To connect the cabling to the power source see “Power
Supply Installation” on page 15.
At startup (POST), the System LED blinks green, while the remaining LEDs are a solid green. Once
the switch passes POST self-test, the System LED turns green. The other LEDs turn off and return to
their operating status. If the switch fails POST, the System LED switches to an amber state.
After a successful self-test, power down the switch and disconnect the power cabling. The switch
is now ready for installation on its final location.
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2.5. Hardware Installation
2.5.1 Installing Switch on DIN-Rail
Each switch has a DIN-Rail kit on the rear panel. The DIN-Rail kit affixes the switch to the DIN-Rail.
It is easy to install the switch on the DIN-Rail:
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2.5.2 Mount Switch on DIN-Rail
Step 1: Tilt the switch and mount the metal spring to DIN-Rail.
Step 2: Push the switch toward the DIN-Rail until you hear the spring snap into place
.
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2.5.3 Wall Mounting Installation
Each switch has another installation method for users to install the switch. A wall mount kit can be
found in the package. The following steps show how to mount the switch on the wall:
Mounting the switch on a Wall
Step 1: Remove Din-Rail kit if it is attached to the switch.
Step 2: Use the 6 included screws to attach the wall mount panel as shown in the diagram below.
In order to prevent switches from being damaged, use only the screws included with the mounting
kit for the switch.
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2.6. Installing and Removing SFP Modules
Up to two fiber optic ports are available (dependent on model) for use in the switch. Refer to the
technical specifications for details.
The Gigabit Ethernet ports on the switch are 100/1000Base SFP Fiber ports, which require using
the 100M or 1G mini-GBIC fiber transceivers to work properly. ComNet provides completed
transceiver models for different distance requirement.
The concept behind the LC port and cable is quite straight forward. Suppose that you are
connecting devices I and II; contrary to electrical signals, optical signals do not require a cir cuit in
order to transmit data. Consequently, one of the optical lines is used to transmit data from device
I to device II, and the other optical line is used transmit data from device II to device I, for fullduplex transmission.
Remember to connect the Tx (transmit) port of device I to the Rx (receive) port of device II, and
the Rx (receive) port of device I to the Tx (transmit) port of device II. If you make your own cable,
we suggest labeling the two sides of the same line with the same letter (A-to-A and B-to-B, or
A1-to-A2 and B1-to-B2).
2.6.1 Installing SFP Modules
To connect the fiber transceiver and LC cable, use the following guidelines:
1. Remove the dust plug from the fiber optic slot chosen for the SFP transceiver.
Figure 2-3. Removing the Dust Plug from an SFP Slot
Do not remove the dust plug from the SFP slot if you are not installing the trans ceiver at this time.
The dust plug protects hardware from dust contamination.
2. Position the SFP transceiver with the handle on top, see the following figure.
3. Locate the triangular marking in the slot and align it with the bottom of the transceiver.
4. Insert the SFP transceiver into the slot until it clicks into place.
5. Make sure the module is seated correctly before sliding the module into the slot. A click sounds
when it is locked in place.
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Handle
Figure 2-4. Installing an SFP Transceiver
If you are attaching fiber optic cables to the transceiver, continue with the following step.
Otherwise, repeat the previous steps to install the remaining SFP transceivers in the device.
6. Remove the protective plug from the SFP transceiver.
Do not remove the dust plug from the transceiver if you are not installing the fiber optic cable at
this time. The dust plug protects hardware from dust contamination.
7. Insert the fiber cable into the transceiver. The connector snaps into place and locks.
Figure 2-5. Attaching a Fiber Optic Cable to a Transceiver
8. Repeat the previous procedures to install any additional SFP transceivers in the switch. The fiber
port is now setup.
2.6.2 Removing SFP Modules
To disconnect an LC connector, use the following guidelines:
1. Press down and hold the locking clips on the upper side of the optic cable.
2. Pull the optic cable out to release it from the transceiver.
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Figure 2-6. Removing a Fiber Optic Cable to a Transceiver
3. Hold the handle on the transceiver and pull the transceiver out of the slot.
Handle
Figure 2-7. Removing an SFP Transceiver
Replace the dust plug on the slot if you are not installing a transceiver. The dust plug protects
hardware from dust contamination.
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2.7. Connecting the Switch to Ethernet Ports
2.7.1 RJ45 Ethernet Cable Wiring
For RJ45 connectors, data-quality, twisted pair cabling (rated CAT5 or better) is recom mended.
The connector bodies on the RJ45 Ethernet ports are metallic and connected to the GND
terminal. For best performance, use shielded cabling. Shielded cabling may be used to provide
further protection.
Table 2-1. RJ45 Ethernet Wiring for Reference
Straight-thru Cable Wiring Cross-over Cable Wiring
Pin 1 Pin 1 Pin 1 Pin 3
Pin 2 Pin 2 Pin 2 Pin 6
Pin 3 Pin 3 Pin 3 Pin 1
Pin 6 Pin 6 Pin 6 Pin 2
Figure 2-8. Ethernet Plug & Connector Pin Position
Maximum cable length: 100 meters (328 ft) for 10/100/1000Base-T
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2.8. Connecting the Switch to Console Port
The industrial switch supports a secondary means of management. By connecting the RJ45 to
RS232 serial cable between a COM port on your PC (9-pin D-sub female) and the switch’s RJ45
(RJ45) port, a wired connection for management can be established.
To terminal or PC To console port
Figure 2-9. Serial Console Cable
5
9
Figure 2-10. DB 9 Pin Position
Table 2-2. Pin Assignment
DB9 Connector RJ45 Connector
NC 1 Orange/White
NC 2 Orange
2 3 Green/White
NC 4 Blue
5 5 Blue/White
3 6 Green
NC 7 Brown/White
NC 8 Brown
1
6
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Figure 2-11. Pin Assignment
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2.10. Reset Button
Reset configuration to factory default
Press and hold Reset button for 5 seconds.
System reboot
Press and hold Reset button for 2 seconds.
Do NOT power off the Ethernet switch when loading default settings.
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3.0 Setup
3.1. First Time Setup
3.1.1 Ove r view
The Industrial Ethernet Managed Switch is a configurable device that facilitates the intercon nection of
Ethernet devices on an Ethernet network. This includes computers, operator interfaces, I/O, controllers,
RTUs, PLCs, other switches/hubs or any device that supports the standard IEEE 802.3 protocol.
This switch has all the capabilities of a store and forward Ethernet switch plus advanced management
features such as SNMP, RSTP and port mirroring. This manual details how to configure the various
management parameters in this easy to use switch.
3.1.2 Introduction
To take full advantage of all the features and resources available from the switch, it must be
configured for your network.
The switch implements Rapid Spanning Tree Protocol (RSTP) and Simple Network Man agement
Protocol (SNMP) to provide most of the services offered by the switch. Rapid Spanning Tree Protocol
allows managed switches to communicate with each other to ensure that there exists only one active
route between each pair of network nodes and pro vides automatic failover to the next available
redundant route. A brief explanation of how RSTP works is given in the Spanning Tree section.
The switch is capable of communicating with other SNMP capable devices on the network to
exchange management information. This statistical/derived information from the network is saved
in the Management Information Base (MIB) of the switch. The MIB is divided into several different
information storage groups. These groups will be elaborated in detail in the Management and
SNMP information section of this document. The switch implements Inter net Group Management
Protocol (IGMP) to optimize the flow of multicast traffic on your net work.
The switch supports both port-based and tag-based Virtual LANs for flexible integration with
VLAN-aware networks with support for VLAN-unaware devices.
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3.1.3 Administrative Interface Access
There are several administrative interfaces to the switch:
1. A graphical web interface accessible via the switch’s built-in web server. Both HTTP and secure
HTTPS with SSL are supported.
This is the recommended method for managing the switch.
2. A terminal interface via the RS232/USB port or over the network using telnet or Secure Shell
(SSH).
3. An SNMP interface can be used to read/write many settings.
4. Command Line Interface (CLI) can be used to read/write most settings. Initial setup must be
done using an Ethernet connection (recommended) or the serial port.
3.1.4 Using the Graphical (Web) Interface
The graphical interface is provided via a web server in the switch and can be accessed via a web
browser such as Opera, Mozilla, or Internet Explorer.
JavaScript must be supported and enabled in your browser for the graphical inter face to work
correctly.
HTTP and HTTPS (secure HTTP) are supported for access to the web server. By default, both
protocols are enabled. Either or both may be disabled to secure the switch. (See the Remote
Access Security topic in this section.)
To access the graphical interface, enter a URL like HTTP://192.168.10.1 in your browser’s address
bar. Replace “http” with “https” to use secure http and replace “192.168.10.1” with your switch’s IP
address if you’ve changed it from the factory default.
The web server in the switch uses a signed security certificate. When you access the server via
https, you may see a warning dialog indicating that the certificate was signed by an unknown
authority. This is expected and to avoid this message in the future you can choose to install the
certificate on your computer.
This manual describes and depicts the web user interface in detail. The terminal interface is not
specifically shown but is basically the same.
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3.1.5 Configuring the Switch for Network Access
To control and monitor the switch via the network, it must be configured with basic network
settings, including an IP address and subnet mask. Refer to the quick start guide in Section 1 for
how to initially access your switch.
To configure the switch for network access, select [Add Menu Address Here] to reach the System
Settings menu. The settings in this menu control the switch’s general network con figuration.
» DHCP Enabled/Disabled: The switch can automatically obtain an IP address from a server
using the Dynamic Host Configuration Protocol (DHCP). This can speed up initial set up, as the
network administrator does not have to find an open IP address.
» IP Address and subnet mask configuration: The IP address for the switch can be changed to a
user-defined address along with a customized subnet mask to separate subnets.
Advanced users can set the IP address to 0.0.0.0 to disable the use of an IP address for additional
security. However, any features requiring an IP address (i.e., web interface, etc.) will no longer be
available.
» Default Gateway Selection: A Gateway Address is chosen to be the address of a router that
connects two different networks. This can be an IP address or a Fully Qualified Domain Name
(FQDN) such as “domainname.org”.
» NTP Server: The IP address or domain name of an NTP (Network Time Protocol) server from
which the switch may retrieve the current time at startup. Please note that using a domain
name requires that at least one domain name server be configured.
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3.1.6 Configuring the Ethernet Ports
The switch comes with default port settings that should allow you to connect to the Ethernet Ports
with out any necessary configuration. Should there be a need to change the name of the ports,
negotiation settings or flow control settings, you can do this in the Port Configura tion menu.
Access this menu by selecting Setup from the Main menu, and then selecting Main Settings.
» Port Name: Each port in the managed switch can be identified with a custom name. Specify a
name for each port here.
» Admin: Ports can be enabled or disabled in the managed switch. For ports that are dis abled,
they are virtually non-existent (not visible in terms of switch operation or spanning tree algorithm).
Choose to enable or disable a port by selecting Enabled or Disabled, respectively.
» Negotiation: All copper ports and gigabit fiber ports in the managed switch are capable of
autonegotiation such that the fastest bandwidth is selected. Choose to enable auto-negotiation
or use fixed settings. 100Mbps Fiber ports are Fixed speed only.
» Speed/Duplex/Flow Control: The managed switch accepts three local area network Ethernet
Standards. The first standard, 10BASE-T, runs 10Mbps with twisted pair Ether net cable
between network interfaces. The second local area network standard is 100BASE-T, which
runs at 100Mbps over the same twisted pair Ethernet cable. Lastly, there is 100BASE-F, which
enables fast Ethernet (100Mbps) over fiber.
These options are available:
» 10h–10 Mbps, Half Duplex
» 10f –10 Mbps, Full Duplex
» 100h–100 Mbps, Half Duplex
» 100f –100 Mbps, Full Duplex
» 1000f–1000 Mbps, Full Duplex
On managed switches with gigabit combination ports, those ports with have two rows, a standard
row of check boxes and a row labeled “SFP” with radio buttons. The SFP setting independently
sets the speed at which a transceiver will operate if one is plugged in. Other wise, the switch will
use the fixed Ethernet port and the corresponding settings for it.
When 100f is selected for the SFP of a gigabit combination port, the corresponding fixed
Ethernet jack will be disabled unless it is changed back to 1000F.
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3.2. Command Line Interface Configuration
3.2.1 Introduction to Command-Line Interface (CLI)
The command-line interface (CLI) is constructed with an eye toward automation of CLI-based
configuration. The interaction is modeled on that used in many Internet protocols such as Telnet,
FTP, and SMTP. After each command is entered and processed, the switch will issue a reply that
consists of a numeric status code and a human-readable explanation of the status.
The general format of commands is:
» section parameter [value]
where:
» section is used to group parameters.
» parameter will specify the parameter within the section. For example, the network section will
have parameters for DHCP, IP address, subnet mask, and default gate way.
» value is the new value of the parameter. If value is omitted, the current value is dis played.
Please note that new values will not take effect until explicitly committed.
Sections and parameter names are case sensitive (e.g., “Network” is not the same as “net work”).
Any commands in the CLI Commands section of this chapter, with the exception of the global
commands, must be prefaced with the name of the section they are in. For example, to change
the IP address of the switch, you would type: network address <newIP>
3.2.2 Accessing the CLI
To access the CLI interface, establish Ethernet or serial connectivity to the switch. To connect by
Ethernet, open a command prompt window and type:
» telnet <switchip> (where <switchip> is the IP address of the switch)
At the login prompt, type “cli” for the username and “admin” for the password. The switch will
respond with “Managed switch configuration CLI ready”.
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3.3. Web Browser Configuration
The switch has an HTML based user interface embedded in the flash memory. The interface offers
an easy to use means to manage basic and advanced switch functions. The interface allows for
local or remote switch configuration anywhere on the network.
The interface is designed for use with [Internet Explorer (6.0), Chrome, Firefox].
3.3.1 Preparing for Web Configuration
The interface requires the installation and connection of the switch to the existing network. A
PC also connected to the network is required to connect to the switch and access the inter face
through a web browser. The required networking information is provided as follows:
» IP a ddre ss: 192.16 8.10.1
» Subnet mask: 255.255.255.0
» Default gateway: 192.168.10.254
» User name: admin
» Password: admin
3.3.2 System Login
Once the switch is installed and connected, power on the switch. The following information guides
you through the logging in process.
1. Launch your web browser on the PC.
2. In the browser’s address bar, type the switch’s default IP address (192.168.10.1). The login screen
displays.
3. Enter the user default name and password (admin / admin).
4. Click OK on the login screen to log in. The main interface displays.
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4.0. Switch Management
4.1. Log In
To access the login window, connect the device to the network, see “Connecting the Switch to
Ethernet Ports” on page 13. Once the switch is installed and connected, power on the switch see
the following procedures to log into your switch.
When the switch is first installed, the default network configuration is set to DHCP enabled. You
will need to make sure your network environment supports the switch setup before connecting it
to the network.
1. Launch your web browser on a computer.
2. In the browser’s address bar type in the switch’s default IP address (192.168.10.1). The login
screen displays.
3. Enter the default user name and password (admin/admin) to log into the management interface.
You can change the default password after you have successfully logged in.
4. Click Login to enter the management interface.
Figure 4-1. Login Screen
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4.2. Recommended Practices
One of the easiest things to do to help increase the security posture of the network infrastructure
is to implement a policy and standard for secure management. This practice is an easy way to
maintain a healthy and secure network.
After you have performed the basic configurations on your switches, the following is a
recommendation which is considered best practice policy.
4.2.1 Changing Default Password
In keeping with good management and security practices, it is recommended that you change the
default password as soon as the device is functioning and setup correctly. The following details
the necessary steps to change the default password.
To change the password:
1. Navigate to Tools > User Account.
2. From the User drop-down menu, select the Admin (default) account.
3. In the User Name field, enter admin for this account. It is not necessary to change the user
name, however, a change in the default settings increases the security settings.
4. In the Password field, type in the new password. Re-type the same password in the Retype
Password field.
5. Click Apply to change the current account settings.
After saving all the desired settings, perform a system save (Tools > Save Configura tion). The
changes are saved.
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Figure 4-2. Changing a Default Password
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