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INSTALLATION AND OPERATION MANUAL

CNGEUMC4+2(TX,RX)/M

10/100/1000 MBPS UNIDIRECTIONAL MEDIA CONVERTER

The ComNet CNGEUMC4+2(TX,RX)/M unidirectional media converter with Link

Guardian limits network traffic to one way communication between source and

destination networks preventing cybersecurity attacks from a non-secured entry point in

the network from reaching a secured part of the network. The CNGEUMC4+2(TX,RX)/M

provides four 10/100/1000Base-T(X) copper ports and two 1000base-FX SFP ports.

The unidirectional media converter also features Port Guardian which provides

additional cybersecurity protection by enabling physical port lockout in the event that

an existing cable is disconnected and prevents a potential network incursion using

common spoofing techniques.

Also included is the ComNet exclusive functionality for easy field deployments

including DIP Switch based operation of RSFP (redundant SFP) for creating redundant

fiber connections and MUX Features for port isolation preventing network video

flooding of multicast traffic.

This manual serves the following

ComNet Model Numbers:

CNGEUMC4+2TX/M

CNGEUMC4+2RX/M

Summary of content (32 pages)

PAGE 1
INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M 10/100/1000 MBPS UNIDIRECTIONAL MEDIA CONVERTER This manual serves the following ComNet Model Numbers: CNGEUMC4+2TX/M CNGEUMC4+2RX/M The ComNet CNGEUMC4+2(TX,RX)/M unidirectional media converter with Link Guardian limits network traffic to one way communication between source and destination networks preventing cybersecurity attacks from a non-secured entry point in the network from reaching a secured part of the network.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Contents Regulatory Compliance Statement 4 Warranty 4 Disclaimer 4 Safety Indications 4 Overview 5 Introduction 5 Software Features 5 Hardware Features 5 Hardware Overview 6 Side Panels 6 Indicating LEDs 8 Cables 9 Ethernet Cables 9 10/100/1000BASE-T(X) Pin Assignments 9 SFP Transceivers 10 Console Cable 10 Unidirectional Data Transmission 11 DIP Switches 11 Graphical User Interface 14 System Information 16 Port
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Port Guardian 25 Port Guardian – CLI Reset 26 Jumbo Frame Port Configuration 27 Command Line Interface Management 28 Technical Specifications 31 TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M 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.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Overview Introduction The CNGEUMC4+2(TX,RX)/M Unidirectional Media Converter Contains many features The media converter will work under a wide variety of temperature, dirty and humid conditions. Some advanced features are configurable using DIP media converters on the device.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Hardware Overview Side Panels The following table describes the ports that are on the sides of the CNGEUMC4+2[POE][HO]/M. Port Description 10/100/1000Base-T(X) RJ-45 Ethernet ports 4 × 10/100/1000Base-TX RJ-45 fast Ethernet ports support auto-negotiation. Default Settings: Speed: auto Duplex: auto Flow control: disable SFP Ports 2 × 1000Base-X SFP USB Console Use the included mini USB cable to manage the device. TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M 1 7 9 2 8 3 4 5 10 6 CNGEUMC4+2TX/M 1. Power Connections 2. LED for PWR1 3. LED for PWR2 4. LED for STATUS 5. Console Mini USB 6. Configuration DIP switches 7. Contact Closure terminal block 8. RJ-45 Ethernet Ports 1-4 9. Link/Activity LEDs for SFP Ports 5 and 6 10. SFP Ports 5 and 6 TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Indicating LEDs LED Color Status Description PWR1 Green On DC Power Input 1 Good Off No power detected On DC Power Input 2 Good Off No power detected Green On Initialization passed Red On Failed PWR2 STATUS Green 10/100/1000Base-T(X) Ethernet ports LNK/ACT Gigabit LED Green On Port link up Blinking Data transmitting Amber On Port speed is 1000 Mbps (Gigabit) Green On Port link up. Blinking Data transmitted.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Cables Ethernet Cables The CNGEUMC4+2(TX,RX)/M unidirectional media converters have standard Ethernet ports. According to the link type, the media converters use CAT 3, 4, 5, & 5e UTP cables to connect to any other network device (PCs, servers, switches, routers, or hubs). Please refer to the following table for cable specifications. Cable Types and Specifications Cable Type Max. Length Connector 10BASE-T Cat.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M 1000 Base-T RJ-45 Pin Assignments Pin Number Assignment 1 BI_DA+ 2 BI_DA- 3 BI_DB+ 4 BI_DC+ 5 BI_DC- 6 BI_DB- 7 BI_DD+ 8 BI_DD- SFP Transceivers The media converter has fiber optic ports that utilize SFP connectors. ComNet offers a wide selection of SFP modules that offer different fiber type, connector type and distances. Please remember that the TX port of unit A should be connected to the RX port of unit B.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Unidirectional Data Transmission The CNGEUMC4+2 unidirectional media converter will only communicate in Transmitter (CNGEUMC4+2TX/M) to Receiver (CNGEUMC4+2RX/M) pairs over fiber uplinks. Data on the source device (TX) will transmit over fiber to the destination device(RX) but data will not transmit from destination to source devices.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Dip Switch Feature Summary MUX (switch 1) Resulting Mode Comment Off No Port Isolation All Ports Communicating On MUX Enabled Ports 1-4 are isolated and only transmit out the fiber ports Resulting Mode Comment Off Fiber Ports are independent All Ports Communicating On Fiber Ports 5 and 6 Port 6 is primary, Port 5 is failover are Trunked RSFP (switch 2) TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M MUX Enabled (DIP switch 1 in ON Position) RSFP Enabled (DIP switch 2 in On Position) With RSFP (Switch 2) Enabled, the fiber ports will trunk and port 6 will be primary. Port 5 will be failover. TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Graphical User Interface This section provides instruction on accessing the HTML Web Site on the Media Converter. Web Based Configuration An embedded HTML Web Site resides in the flash memory on the CPU Board. It contains HTML code that allows you to view and toggle settings on the Media Converter through a standard web browser. Preparing for GUI Access The default values are below: IP Address: 192.168.10.1 Subnet Mask: 255.255.255.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Main Interface Main interface TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M System Information The media converter system information is provided here. System Information interface Label Description Settings Summery MUX and Redundant SFP Mode States Web Management Enable Override of the DIP Switch Settings Override Settings With Web MGMT Enabled, these options will override MUX and RSFP Temperature Status Device internal board temperature reading Port Link Status Link status and port disable TECH SUPPORT: 1.888.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Port Configuration The Port Configuration page shows you current link state and settings. By default, the Media Converter ports are set to auto negotiation, the user may force negotiation so they can select port speed, duplex, and flow control. Port Statistics Port Statistics displays packet counts per port. Refresh the screen to update statistics. TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Authentication The Authentication page allows you to change the username and password. All updates apply to both the GUI Webpage and Command Line Access. TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Upgrade Firmware Enable Image Upgrade allows you to update the firmware of the Media Converter. The firmware is upgraded using a bootloader provided by ComNet. The Enable Image Upgrade button must be enabled before the bootloader will connect to the Media Converter. RSFP is not available during the firmware update process so please observe the network topology before upgrading.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Factory Defaults Reset The factory default Reset feature restores the device to the original factory default values except for the network configuration settings. TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M System Reset A System Reset is required for configuration of Jumbo Frames and the Static MAC Lock. System reset is a soft reboot, system can take up to 15 seconds to fully power cycle. System Reset interface TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Network Interface Configuration Label Description Host Name Assign a name to the device Enable DHCP When DHCP Client function is enabled, the Media Converter will be assigned an IP Address from the network DHCP Server. The default IP will be replaced by the DHCP Address assigned to it. IP Address IP address of the media converter. Gateway Gateway Address for network traffic. Subnet Mask Subnet mask for the device.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Contact Configuration Label Description Output Contact The faults that trigger the output contacts are fully configurable by selecting the source(s) to monitor Contact Override The contacts may also be forced to be an opened or closed state, the state box checked will close the contact when override is selected Contact Status TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Static MAC Lock Label Description Enable Static MAC Enables Static MAC Locking Lock Static MAC Address MAC Address of the device that is allowed to forward and receive traffic. Packets will be dropped for MAC addresses not listed in the table Port Number Ports to be included in the locked list TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Port Guardian The Port Guardian feature provides a high security managed port lock out mode and when enabled will power down the port as soon as a link loss status is detected when a cable is disconnected. This provides high security against network attack by an intruder who accesses the edge device and disconnects it to then try and connect their own intrusion device (laptop, network sniffer etc.).
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Port Guardian – CLI Reset The Port Guardian feature can be cleared from the USB serial port connection on the unit through the CLI and also the port status can be displayed to show any ports that are in lock out state. To access the Port Guardian CLI commands, connect to the CLI using the procedure described in the Command Line Interface Management section on page 48 and then use the commands described below.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Jumbo Frame Port Configuration Select port frame size (MTU). 10240 is the default for the device. To disable jumbo frame support, select “Not Enabled” on the appropriate port. That will default the MTU size to 1522. TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Command Line Interface Management How to access the Command Line Interface (CLI) CLI access is provided by connecting a USB cable from a PC to the Media Converter. The PC should recognize the device and assign a COM Port to the device. Please refer to your PC documentation to determine which COM port was assigned to the media converter.
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INSTALLATION AND OPERATION MANUAL Command Description netinfo Displays the IP Address of the device help Displays a list of available command setip Update the IP Address on the device Format: setip Example format: “setip eth0 10.10.10.10 255.255.255.0” TECH SUPPORT: 1.888.678.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Firmware Upgrade Procedure The steps for upgrading the unit with the push bootloader are as follows: 1. B ring up the web server and select the Firmware Upgrade tap. Check the “Enable Image Upgrade box. 2. Start the bootloader and verify the IP address listed is the same as your device. Update if needed.
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INSTALLATION AND OPERATION MANUAL CNGEUMC4+2(TX,RX)/M Technical Specifications Interface SFP 2 × 1000Base-X SFP RJ-45 Ports 2 × 10/100/1000Base-T(X), Auto MDI/MDIX LED Indicators Per Unit: Power x 2 (Green) RJ-45 Per Port: Link/Activity (Green/Blinking), 1000 Mbps Indicator (Amber) SFP Per Port: Link/Activity (Green/Blinking) Power Requirements Input Voltage Dual 9 – 36 VDC or 24 VAC Current Draw 1A Reverse Polarity Polarity Protection Present on terminal block Environmental Operating Temperat
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MECHANICAL INSTALLATION INSTRUCTIONS ComNet Customer Service Customer Care is ComNet Technology’s global service center, where our professional staff is ready to answer your questions at any time. Email ComNet Global Service Center: customercare@comnet.net 3 CORPORATE DRIVE | DANBURY, CT 06810 | USA T: 203.796.5300 | F: 203.796.5303 | TECH SUPPORT: 1.888.678.9427 | INFO@COMNET.