LantronixメーカーEDS-MD4の使用説明書/サービス説明書
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Part Number 900-591 Revision D November 2011 EDS-MD TM User Guide EDS-MD4 EDS-MD8 EDS-MD16.
EDS-MD User Guide 2 Copyright & Trademark © 2011 Lantronix. All rights reserved . No part of the cont ents of this b ook may be transm itted or reproduced in a ny form or by any means without the written permissio n of Lantr onix. Printe d in th e United States of America.
EDS-MD User Guide 3 T able of Content s Copyright & Tra de mark ____________ __________ ___________ __ ___________ ________ 2 Warranty _______ __________ ______________ _____________ __________ __.
EDS-MD User Guide 4 3: Installation of EDS-MD4/8/16 Device Servers 23 Package Contents _____________ _____________ ___________ _____________ _______ 23 User-Supplied Items ___________ _____________ __.
EDS-MD User Guide 5 To Configure Tunnel Packing Mod e Settings __________________ _____________ __ 38 Using Web Manager ____________________ __________ ___ ___________ ____ 38 Using the CLI __________.
EDS-MD User Guide 6 8: Terminal and Host Settings 49 Terminal Settings _____________________ _____________ _____________ __________ 49 To Configure the Terminal Network C onnectio n _____________ ____.
EDS-MD User Guide 7 To Configure RSS Setting s _____________ _____________ _____________ _______ 56 Using Web Manager ____________________ __________ ___ ___________ ____ 56 Using the CLI ____________.
EDS-MD User Guide 8 Using XML _________ ___________ _____________ ___________ ____________ 65 File Modification ___________ _____________ _____________ ___________ _______ 66 File Transfer ___________.
EDS-MD User Guide 9 Using the CLI _______________ ___________ _____________ _____________ __ 71 Using XML _________ ___________ _____________ ___________ ____________ 71 Traceroute __ __________ _____.
EDS-MD User Guide 10 Using the CLI _______________ ___________ _____________ _____________ __ 76 Using XML _________ ___________ _____________ ___________ ____________ 76 Telnet Settings _____________.
EDS-MD User Guide 11 Using Web Manager ____________________ __________ ___ ___________ ____ 82 Using the CLI _______________ ___________ _____________ _____________ __ 82 Using XML _________ _________.
EDS-MD User Guide 12 List of Figures Figure 2-1 EDS-MD Prod uct Label ____________ _____________ ___________ _____________ __ 22 Figure 3-1 Front View of the EDS-MD16 _______ _____________ ___________.
EDS-MD User Guide 13 List of T ables Table 3-3 Syste m LEDs on the Top of EDS-MD ______________ ______________ ____________ 24 Table 3-4 Serial Indicato r LEDs on the Top of EDS-MD ______________________ ____________ 25 Table 3-5 RJ45 LEDs on the Back Panel (Ether net Indicators ).
EDS-MD User Guide 14 Table 11-8 Query Port Settings _________ ___________ __ _____________ ___________ ___ ____ 69 Table 11-9 Ping Settings ___________________ ___________ _____________ _____________ .
EDS-MD User Guide 15 1: Using This Guide Purpose and Audience This guide provides the information nee ded to configure, use, a nd update the EDS-MD4, EDS- MD8 and EDS-MD16. It is intended fo r system integrators who are inst alling this product into their designs.
1: Using This Guide EDS-MD User Guide 16 Safety Information This section describes the safety prec autions that should be followe d when installing and operating the EDS- MD. Warning: This equipment is not suitable for us e in the presence of a flammable anaesthetic mixture including air, oxygen or nitro us oxide.
1: Using This Guide EDS-MD User Guide 17 Battery A Lithium battery cell inside the unit maintains th e unit's date and time when the device is powered off. Do not attempt to replace it. The batter y is serviceable only by Lantronix. Caution: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED.
1: Using This Guide EDS-MD User Guide 18 Equipment Classifications Classification according to the type of protec tion again st electric shock: Class I Equipment Classification according to th.
1: Using This Guide EDS-MD User Guide 19 Additional Document ation Visit the Lantronix Web site at www.lantronix.com/su pport/documentation for the latest documentation and the following additional docum entation.
EDS-MD User Guide 20 2: Introduction The EDS-MD4, EDS-MD8 and EDS-MD16 Ether ne t Device Servers ar e co mp le te ne tw or k- enabling solutions. This device server a llows system integrators an d ad ministrators to go to market quickly and easily with Ethe rnet networking and web server capabilities.
2: Introduction EDS-MD User Guide 21 T roubleshooting Cap abil ities The EDS-MD4/8/16 of fers a comprehensive diagnostic toolset that lets you tr oubleshoot problems quickly and easily. Available from the CLI or Web Manager , the diagnostic tools let you: View memory and IP socket information.
2: Introduction EDS-MD User Guide 22 Port Numbers Every TCP connection and ever y UDP datagram is defined by a destina tion and source IP address, and a destinat ion and sou rce por t number . Fo r exampl e, a Telnet ser ver commonly u ses TCP port number 2 3.
EDS-MD User Guide 23 3: Installation of EDS-MD4/8/16 Device Servers This chapter describ es ho w to insta ll the EDS-M D4, EDS -MD 8 and EDS-M D1 6 device ser ve rs.
3: Installation of EDS-MD4/8/16 Device Servers EDS-MD User Guide 24 Figure 3-1 Fron t View of the EDS-MD16 Figure 3-2 Back View of the EDS-MD4, EDS-MD8 and EDS-MD16 Serial Ports In the front of the device, the EDS-MD4 has 4 serial ports, the EDS-MD8 has 8 seri al ports, and the EDS-MD16 has 16 serial ports.
3: Installation of EDS-MD4/8/16 Device Servers EDS-MD User Guide 25 Table 3-4 Serial Indicator LEDs on the Top of EDS- MD Note: Number of Serial LEDs correspo nd with the EDS-MD model number. For instance, EDS-MD4 has 4 LEDs, EDS-MD8 has 8 LEDs, and EDS- MD16 has 16 LEDs.
3: Installation of EDS-MD4/8/16 Device Servers EDS-MD User Guide 26 T echnical Specification Category Descriptio n NETWORK INTERFACE Ethernet Ports 3 RJ45 10Base-T/ 100Base-TX/1000Base-T Ethe rnet ports Auto sensing Automatic MDI/MDI-X crossover Full duplex IEEE 8 02.
3: Installation of EDS-MD4/8/16 Device Servers EDS-MD User Guide 27 Inst alling the EDS-MD Finding a Suitable Location You can install the EDS-MD4, EDS-MD8 or EDS-MD16 either on a shelf, on a desktop or mounted on the wall. If using AC power, do not use outlets controlled by a wall switch.
EDS-MD User Guide 28 4: Using DeviceInstaller This chapter covers the steps for locating a EDS -MD4/8/1 6 un it and viewing its proper ties and device details. DeviceIn staller is a free utility program provided by Lant ronix that dis covers, configures, upgrad es and ma nages Lantronix Device Servers.
4: Using DeviceInstaller EDS-MD User Guide 29 Group Configurable field. Enter a group to categ orize th e EDS-MD. Double- click the field, type in the value, and press Enter to complete. This group name is local to this PC and is not visible on other PCs or laptops using DeviceInstaller.
EDS-MD User Guide 30 5: Configuration Using W eb Manager This chapter describes how to configure the EDS-MD4, EDS- MD8 and EDS-MD16 using Web Manager, the Lan tronix browser -based configurati on tool. The unit’s configuration is stored in nonvolatile memory an d is retained without powe r.
5: Configuration Using Web Manager EDS-MD User Guide 31 Device Status Page The Device Status page is the first page that appears after you log into the Web Manager.
5: Configuration Using Web Manager EDS-MD User Guide 32 We b Manager Page Component s The layout of a typical We b Manager page is below. Figure 5-1 Componen ts of the Web Manager Pa ge The menu bar always appears at the left side of the pa ge, re gardless of the page shown.
5: Configuration Using Web Manager EDS-MD User Guide 33 The information or help area show s infor mat ion or instructi ons associated with the page. A Logout link is available at the upper righ t corner of every web page. In Chrome or Safari, it is necessary to cl os e out of the browser to comp letely logout.
5: Configuration Using Web Manager EDS-MD User Guide 34 Syslog Lets you specify the severity of events to log and the server and ports to which the syslog should be sent. 53 System Lets you reboot device, restore fa ctory defaults, upload new firmware, and change the device long and short names.
EDS-MD User Guide 35 6: Line and T unnel Settings The EDS-MD4, EDS-MD8 and EDS-MD 1 6 contains four, eight or si xteen Lines, dependin g on th e specific model.
6: Line and Tunn el Settings EDS-MD User Guide 36 Table 6-2 Line Command Mode Settings To Configure Line Settings Note: The following section describes the steps to view and configure Line 1 settings; these steps apply to other line instances of the device.
6: Line and Tunn el Settings EDS-MD User Guide 37 Using the CLI To view Line statistics: enable -> line 1, show statistics Using XML Include in your file: <statusgroup name=”line” in.
6: Line and Tunn el Settings EDS-MD User Guide 38 Using the CLI To enter Tunnel 1 command level: enable -> tunnel 1 -> serial Using XML Include in your file: <configgroup name=”tunnel serial” instance=”1”> Packing Mode With Packing, data from the serial Line is not sent over the network immediately.
6: Line and Tunn el Settings EDS-MD User Guide 39 Using the CLI To enter the Tunnel 1 Packing command level: enable -> tunnel 1 -> packing Using XML Include in your file: <configgroup.
6: Line and Tunn el Settings EDS-MD User Guide 40 To Configure Tunnel Ac cept Mode Settings Using Web Manager To configure the Accept Mode for a specific tunnel, click Tunnel in the menu and select Tunnel 1 -> Accept Mode .
6: Line and Tunn el Settings EDS-MD User Guide 41 Connect Mode In Connect Mode, theEDS-MD4/8/16 contin ues to attemp t an outgoing conn ection on the network, until established. If the connection attempt fails or the connection dr ops, then it retries after a timeout.
6: Line and Tunn el Settings EDS-MD User Guide 42 To Configure Tunnel Co nnect Mode Settings Using Web Manager To configure the Connect Mode for a specific tunnel, click Tunn el in the menu and select Tunnel 1 -> Connect Mode .
6: Line and Tunn el Settings EDS-MD User Guide 43 To Configure Tunnel Disc onnect Mode Settings Using Web Manager To configure the Disconnect Mode for a specific tunnel, click Tunnel in the menu an d select Tunnel 1 -> Disconnect Mode .
6: Line and Tunn el Settings EDS-MD User Guide 44 To Configure Tunnel Mode m Emulation Settings Using Web Manager To configure the Modem Emulatio n fo r a specific tunnel, click Tunnel in the menu and select Tunnel 1 -> Modem Emulation .
6: Line and Tunn el Settings EDS-MD User Guide 45 Using the CLI To view Tunnel 1 statistics: enable -> tunnel 1, show statistics Using XML Include in your file: <statusgroup name=”tunn.
EDS-MD User Guide 46 7: Network Settings The Network Settings show the status of the Et hernet interface/lin k and let yo u configure t he settings on the device. Interface settings are rela ted to t he conf iguration of the IP and related protocols .
7: Network Settings EDS-MD User Guide 47 To Configure Network Interface Settings Using Web Manager To modify Ethernet (eth0) settings, click Network on the menu and select Network 1 -> Interface -> Configuration .
7: Network Settings EDS-MD User Guide 48 Network Link Settings Physical link parameters can be configured fo r an Ethernet (eth0) Ne twork Interface (see Table 7-2 ). Table 7-2 Network 1 (eth0) Lin k Settings Notes: When speed is Auto , duplex must be Auto or Half .
EDS-MD User Guide 49 8: T erminal and Host Settings Predefined conne ctions are available via telnet, ssh, or a serial port. A user can choose one o f the presented options and the device au to mati cally makes the predefined conne ction. Either the Telnet, SSH, or serial port connection can present the CLI or the Login Connect Men u.
8: Terminal and Host Settings EDS-MD User Guide 50 To Configure the Termin al Network Connection Using Web Manager To configure the Terminal on Networ k, click Terminal on the men u and select Network -> Configuration .
8: Terminal and Host Settings EDS-MD User Guide 51 To Configure Host Settings Note: The following section describes the steps to view and configure Host 1 settings; these steps apply to ot her host ins tances of the device. Using Web Manager To configure a particular Host, click Host on th e menu an d select Ho st 1 -> Conf iguration .
EDS-MD User Guide 52 9: Services Settings DNS Settings This section describes the active run- time sett ings for the domain name system (DN S) protocol. The primary and secondary DNS addresses come from th e active interface. The static addresses from the Network Interface configur ation settings may be overridden by DHCP.
9: Services Settings EDS-MD User Guide 53 FTP Settings The FTP protocol can be used to upload and d own load user files, and upgrad e the EDS-MD4/8/16 firmware.
9: Services Settings EDS-MD User Guide 54 To View or Configur e Syslog Settings: Using Web Manager To configure the Syslog, click Syslog in the menu.
9: Services Settings EDS-MD User Guide 55 To Configure HTTP Settings Using Web Manager To configure HTTP settings, click HTTP in the menu and select Configuration .
9: Services Settings EDS-MD User Guide 56 To Configure HTTP Authentication Using Web Manager To configure HTTP Authentication, click HTTP in the menu and selec t Aut henticati on .
9: Services Settings EDS-MD User Guide 57 Using the CLI To enter the RSS command leve l: enable -> config -> rss Using XML Include in your file: <configgroup name=”rss”> Real T ime Cloc k (RTC) Settings The current date and time displayed on the EDS-MD can be modified.
EDS-MD User Guide 58 10: Security Settings The EDS-MD4, EDS-MD8 and EDS-MD16 de vice supports Secure Shell (SSH) and Secure Sockets Layer (SSL). SSH is a networ k protocol for securely accessing a remote device. SSH provides a secure, encr ypted communication ch an nel between two hosts over a networ k.
10: Security Settings EDS-MD User Guide 59 Note: SSH Keys from other programs may be converted to the require d EDS-MD format. Use Open SSH to perform the conversion. SSH Client Known Hosts The SSH Client Known Hosts are us ed by all applications that pl ay the role of an SSH Client.
10: Security Settings EDS-MD User Guide 60 Table 10-3 SSH Server Authorized Users SSH Client Users The SSH Client Users are used by all applications th at play the role of an SSH Client.
10: Security Settings EDS-MD User Guide 61 To Configure SSH Settings Using Web Manager To configure SSH, click SSH in the menu. Using the CLI To enter the SSH command level: enable -> ssh U.
10: Security Settings EDS-MD User Guide 62 Certificate and Key Generation The EDS-MD4, EDS-MD8 and EDS-MD16 can g ene rate self signed certificat es and the ir correspond ing keys. Th is can be don e for both the rsa and dsa certificate formats. Certifica tes can be identified on the EDS-MD4/8/16 by a name pr ovided at generation time.
10: Security Settings EDS-MD User Guide 63 Using XML Not applicable. Certificate Upload Settings SSL certificates identify the EDS-MD4/8/16 to peer s. Certifica te and key pairs can be uploaded to the EDS-MD4/ 8/16 throu gh either the CLI or XML import mecha nisms.
10: Security Settings EDS-MD User Guide 64 Trusted Authorities One or more authority ce rtificates are needed to ve rify a peer' s identity. These certificates do not require a private ke y. To Upload an Authority Certificate Using Web Manager To upload an Auth orit y Certificate, click SSL in the menu and select Trusted Authorit ies .
EDS-MD User Guide 65 1 1: Maintenan ce and Diagnostics Settings Filesystem Settings Use the file system to list, view, add, remove, and transfer files.
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 66 File Modification The EDS-MD4/8/16 allows for the creati on and removal of files on its filesystem. Table 11-2 File Modification Sett ings File Transfer Files can be transferred to a nd from the EDS-MD4/ 8/16 via the TFTP protocol .
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 67 To Transfer or Modi fy Filesystem Files Using Web Manager To create a new file or directory, upload an existing file, copy or move a file, click Filesystem in the menu and se lec t Browse .
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 68 Table 11-5 ICMP Network Stack Settin gs To Configure ICMP Ne twork Stack Settings Using Web Manager To configure ICMP p rotocol settings, click Protocol Stack in the menu a nd select ICMP .
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 69 Table 11-7 SMTP Ne twork Stack Settings To Configure SMTP Ne twork Stack Settings Using Web Manager To configure SMTP protocol settings, click Protocol Stack in the men u and select SMTP .
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 70 Using XML Include in your file: <configgroup name=”query port”> and <configitem name=”state”> Diagnostics The EDS-MD4/8/16 has several tools for diagnostics and statistics.
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 71 Table 11-9 Ping Sett ings To Ping a Remote Host Using Web Manager To ping a Remote Host, click Diagnost ics in the menu and select Ping . Using the CLI To enter the command leve l: enable Using XML Not applicable.
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 72 Log Table 11-11 Log Settings To Configure the Diagnostic Log Output Using Web Manager To configure the Diagnostic Log output, click Diagnost ics in the menu and select Log .
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 73 Processes The EDS-MD4/8/16 Processes information shows all the processes curr en tly running on the system. It shows the Proc ess ID (PID), Pare nt Process ID (PPID), user, CPU percentage, percentage of total CPU cycles, and process comm and line information.
11: Maintenance and Diagnostics Settin gs EDS-MD User Guide 74 System Settings The EDS-MD4/8/16 System settings allow for re booting the device, restoring factory defaults, uploading new firmware and up dating a system’s short and long name. Note: Anytime you reboot the unit , this operation will take some time to complete.
EDS-MD User Guide 75 12: Advanced Settings Email Settings View and configure email alerts relati ng to events occu rring within the system. Table 12-1 Email Configuration To View, Configure and Send E.
12: Advanced Settings EDS-MD User Guide 76 Using the CLI To enter Email command level: enable -> email 1 Using XML Include in your file: <configgroup name=”email” instance=”1”>.
12: Advanced Settings EDS-MD User Guide 77 Telnet Settings The telnet settings control CLI access to the EDS-MD4/8/16 over the Telnet pro to col. Table 12-3 Telnet Settings To Configure Telnet Settings Using Web Manager To configure Telnet settings, click CLI in the menu and select Config uration .
12: Advanced Settings EDS-MD User Guide 78 To Configure SSH Settings Using Web Manager To configure SSH settings, click CLI in the menu and select Configuration .
12: Advanced Settings EDS-MD User Guide 79 To Export Configuration in XML Format Using Web Manager To export configuration for mat, click XML in the menu and select Export Configuration . Using the CLI To enter the XML command leve l: enable -> xml Using XML Not applicable.
12: Advanced Settings EDS-MD User Guide 80 Using XML Not applicable. XML: Import Configuration Here you can import a system configuration from an XML file. The XML data can be impor ted from a file on the file system or pasted into a CLI session. The groups to import can be specified at the command line, the default is all gr oups.
EDS-MD User Guide 81 13: Updating Firmware Obt aining Firmware Obtain the most up-to-date firmware and release notes for the unit from the Lantr onix Web site ( www.lantronix.com/ supp ort/downloads/ ) or by using anonym ous FTP ( f tp://ftp.lantronix.
EDS-MD User Guide 82 14: VIP Settings V irtual IP (VIP ) Configuration Configuring Connect Mode tunnels to use VIP is a simple matter of co nfiguring a tunnel as is normally done, but also enabling VIP in the Tunn el Ho st settings, and using a VIP Name for the address.
14: VIP Settings EDS-MD User Guide 83 Using XML Include in your file: < statusgroup name=”vip”> V irtual IP (VIP) Counters Table 14-2 VIP Coun t ers To View VIP Counters Using Web Manager Click VIP on the menu and select Counte rs .
EDS-MD User Guide 84 15: Branding the EDS-MD4/8/16 This chapter descr ib es how to bra nd you r ED S-MD 4 , EDS-MD 8 or EDS-MD16 by using Web Manager and Command Lin e Interface (CLI).
15: Branding the EDS-MD4/8/16 EDS-MD User Guide 85 Short and Long Name Customization You can customize the sh ort and long names in yo ur EDS-MD4/8/16. The names disp lay in the CLI show command and in the System web page in the Cur rent Configuration table.
EDS-MD User Guide 86 Appendix A: T echnical Support If you are unable to res olve an issue using the info rmation in this docume ntation, please contact Technical Support: Technical Support US Check our online knowledge base or se nd a question to Technical Suppor t at http://www.
EDS-MD User Guide 87 Appendix B: Binary to Hexadecimal Conversions Many of the unit's co nfigurat ion proc edures require you to assemble a ser ies of options (represented as b its) into a comple te command (r epresented as a byte) . The resulting binary value must be conv erted to a hexadecima l representation.
EDS-MD User Guide 88 Figure 17-2 Windows Scientific Calculator 4. Click Hex. The hexade cimal value appears. Figure 17-3 Hexadec ima l Values in the Scientif ic Calculator.
EDS-MD User Guide 89 Appendix C: Compliance (According to ISO/IEC Guide 22 and EN 4501 4) Manufacturer's Na me & Address: Lantronix 167 Technology Drive, Irvine, CA 92618 USA Product Name Mod.
EDS-MD User Guide 90 Table 18-3 Regulatory Compliance Manufacturer's Contact: Lantronix 167 Technology Drive, Irvine, CA 92618 USA Tel: 949-453-3 990 Fax: 949-450-7 249 Standard Description Unite.
EDS-MD User Guide 91 Figure 18-4 Suppliers Declaration o f Confo rmity.
EDS-MD User Guide 92 RoHS Notice All Lantronix products in the following famili es are Chin a RoHS-compliant a nd free of the followin g hazardous substances and elements: O: toxic or hazardous substance co ntained in all of the homogeneous mate rials for this pa rt is belo w the limit requirement in SJ/T11363-2006.
EDS-MD User Guide 93 Appendix D: Lantronix Ca bles, Adapters and Serial Port Pinouts Lantronix cables and adapter s for use with EDS- MD4, EDS-M D8 and EDS-M D16 are liste d here according to part number a nd application.
EDS-MD User Guide 94 Adapters and Serial Port Pinouts Figure 19-2 RJ45 Receptacle to DB25M DTE Adapter (PN 200.206 6A) Figure 19-3 RJ45 Receptacle to DB25M DCE Ada pter (PN 200.
EDS-MD User Guide 95 Figure 19-4 RJ45 Receptacle to DB25F DTE Ad apte r (PN 200.2067A ) Figure 19-5 RJ45 Rece ptac le to DB25F DCE Adapte r (PN 200.2 074).
EDS-MD User Guide 96 Figure 19-6 RJ 45 Receptacle to D B9M DTE Adapter (PN 200.2069A) Figure 19-7 RJ45 Receptac le to DB9M DCE Adapter (PN 200.2 071).
EDS-MD User Guide 97 Figure 19-8 RJ45 Receptacle to DB9F DTE Ad apte r (PN 200.2070A) Figure 19-9 RJ45 Receptacle to DB9F DCE Adapter (PN 200.2072).
EDS-MD User Guide 98 Figure 19-10 RJ45 to RJ45 Adap ter (ADP010104-01) Note: The cable en ds of the ADP010104 -01 are an RJ45 socket on o ne end and a RJ45 plug on the other instead of RJ45 socke ts on both ends.
デバイスLantronix EDS-MD4の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Lantronix EDS-MD4をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはLantronix EDS-MD4の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Lantronix EDS-MD4の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Lantronix EDS-MD4で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Lantronix EDS-MD4を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はLantronix EDS-MD4の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Lantronix EDS-MD4に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちLantronix EDS-MD4デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
