Lantronix UDS2100 manual ARP and Telnet, To assign a temporary IP address

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A: Alternative Ways to Assign an IP Address

BOOTP

Similar to DHCP, but for smaller networks. Automatically assigns the IP address for a specific duration of time.

ARP and Telnet

If the unit has no IP address, you can use Address Resolution Protocol (ARP) method from UNIX and Windows-based systems to assign a temporary IP address.

To assign a temporary IP address:

1.On a UNIX or Windows-based host, create an entry in the host's ARP table using the intended IP address and the hardware address of the unit (on the product label on the bottom of the unit).

arp -s 191.12.3.77 00:20:4a:xx:xx:xx (Unix)

arp -s 191.12.3.77 00-20-4a-xx-xx-xx (Windows)

Note: For the ARP command to work on Windows 95, the ARP table on the PC must have at least one IP address defined other than its own.

2.If you are using Windows 95, type ARP -Aat the DOS command prompt to verify that there is at least one entry in the ARP table. If the local machine is the only entry, ping another IP address on your network to build a new entry in the ARP table; the IP address must be a host other than the machine on which you are working. Once there is at least one additional entry in the ARP table, use the following command to ARP an IP address to the unit:

arp -s 191.12.3.77 00-20-4a-xx-xx-xx

3.Open a Telnet connection to port 1. The connection fails quickly, but the unit temporarily changes its IP address to the one designated in this step.

telnet 191.12.3.77 1

4.Open a Telnet connection to port 9999, and press Enter within five seconds to go into Setup Mode. If you wait longer than five seconds, the unit reboots.

telnet 191.12.3.77 9999

Note: The IP address you just set is temporary and reverts to the default value when the unit’s power is reset, unless you configure the unit with a static IP address and store the changes permanently.

UDS2100 User Guide

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Contents UDS2100 User Guide Contacts Copyright & TrademarkRevisions Date Rev CommentsContents Setup Mode Server Configuration Warranty Tables FiguresPurpose and Audience Using This GuideChapter Summary Chapter DescriptionDocument Additional DocumentationApplication Examples IntroductionApplications Introduction Protocol Support Additional FeaturesConfiguration Methods Sample Hardware Address 00-20-4A-14-01-18 or 00204A140118 Product Information LabelGetting Started Package ContentsTo install the unit Installing the UDSHardware Address Required InformationIP Address IP Address Subnet Mask GatewayInstalling DeviceInstaller Assigning the IP Address DeviceInstallerAssigning an IP Address Select Assign a specific IP address and click NextViewing the Current Configuration Accessing the UDS2100 Using DeviceInstallerTo view the units current settings Adding the Unit to the Manage ListGetting Started SettingPress Enter within 5 seconds To configure the unit using a Telnet sessionNext Step Assigning the IP Address Serial Port Login Accessing UDS2100 Using DeviceInstaller Configuration Using Web ManagerLantronix Web Manager Network ConfigurationSelect Obtain IP address automatically Automatic IP Address ConfigurationTo assign an IP address automatically Ethernet Configuration Static IP Address ConfigurationSelect Use the following IP configuration To assign an IP address manuallyTo configure the UDS2100’s device server settings Server ConfigurationServer Configuration AdvancedTo configure the host list Host List ConfigurationSerial Settings Channel 1 and Channel 2 ConfigurationRetry Settings Host InformationChannel Port SettingsFlush Input Buffer Serial to Network Pack ControlFlush Output Buffer Network to Serial Connection Settings TCPTo configure a channel’s TCP settings Connect Mode Active Connection Connect Mode Passive ConnectionEndpoint Configuration Connect ProtocolCommon Options Disconnect ModeDatagram Mode Connection Settings UDPTo configure a channel’s UDP settings Apply Factory Defaults Apply SettingsTelnet Connection Configuration via Telnet or Serial Port Setup ModeAccessing Setup Mode To establish a Telnet connection Serial Port ConnectionTo exit setup mode Exiting Setup ModeServer Configuration Option Setup Mode Server ConfigurationIP Address Set Gateway IP AddressNetmask Number of Bits for Host Part Change Telnet Configuration PasswordDhcp Name Network Class Host Bits NetmaskSetup Mode Server Configuration Baudrate Setup Mode Channel ConfigurationChannel 1 Option Mode Option Interface ModeCommon I/F Mode Setting Binary FlowPort Number Connect ModeFlow Control Option Hex Port Numbers Reserved forConnect Mode Option Active Startup Incoming ConnectionResponse Manual Connection Address Example Datagram Type To enable the hostlistModem Mode No Carrier MessageMeaningAuto Increment Source Port Send the Escape Sequence +++ in Modem ModeModem Mode Function Command Remote IP Address Disconnect Mode OptionRemote Port DisConnModePack Control Flush Mode Buffer FlushingTrailing Characters Packing IntervalSend Characters OptionChannel Port Password DisConnTime Inactivity TimeoutSend Characters Telnet Terminal TypeTCP Keepalive time in seconds Setup Mode Advanced SettingsExpert Settings Option Disable Monitor Mode at bootup ARP Cache timeout in secondsEnable alternate MAC Http Port NumberDisable Snmp Security Settings OptionDisable Telnet Setup Snmp Community NameDisable Port 77FE Hex Disable Tftp Firmware UpdateDisable Web Server Disable Web SetupChannel 1 and Channel 2 Configuration Defaults Default Settings OptionExpert Settings Defaults Security Settings DefaultsSetup Mode Advanced Settings Using Tftp Graphical User Interface Firmware UpgradesObtaining Firmware Reloading Firmware ROM FileTo recover firmware Using Tftp Command Line InterfaceFirmware Upgrades Entering Monitor Mode Using the Serial Port Monitor ModeEntering Monitor Mode Using the Network Port Monitor Mode CommandsResponse Meaning Command Command Name FunctionLEDs Troubleshooting and Contact InformationLEDs Meaning Diagnostic, Power, and Serial Port LEDs UDS2100 LEDsProblem/Message Reason Solution Problems and Error MessagesProblem/Message Reason Solution Technical Support Europe, Middle East, and Africa Technical SupportUDS2100 Serial Ports Serial Connector PinoutsConnections and Pinouts Ethernet Connector Pinouts Power Plug Reset ButtonTo reset the unit to factory defaults Network PortCategory Description Technical SpecificationsCategory Description Transient over voltages AutoIP Alternative Ways to Assign an IP AddressTo assign a temporary IP address ARP and TelnetDecimal Binary Hex Converting Binary to HexadecimalConversion Table Scientific Calculator Warranty Compliance and Disclaimer Disclaimer and Supplementary Information Index

UDS2100 specifications

The Lantronix UDS2100 is a versatile device server designed to facilitate connections between serial devices and Ethernet networks. This innovative product acts as a bridge, allowing for seamless communication between legacy serial devices and modern IP-based systems. Its importance has grown, particularly in industries that still rely on serial technology but seek to integrate with contemporary IT infrastructures.

One of the main features of the UDS2100 is its ability to connect up to two serial devices simultaneously. This dual-port capability makes it an efficient solution for environments where multiple devices need to be networked without additional complexity. By enabling these connections, the UDS2100 allows for remote control and monitoring of various equipment, leading to increased operational efficiency.

The device supports a variety of communication protocols, including TCP/IP, UDP, and HTTP, ensuring compatibility with a broad range of applications. This flexibility is complemented by the UDS2100’s support for both standard and custom baud rates, making it adaptable to various serial device configurations. Users can configure the device via a web-based interface, simplifying the setup process and enhancing user experience.

In terms of security, the Lantronix UDS2100 is equipped with numerous features to protect data transmission over the network. These include support for Secure Sockets Layer (SSL) and Transport Layer Security (TLS), which encrypt the data being transmitted, ensuring that sensitive information remains protected from potential threats.

The UDS2100 also features robust diagnostic capabilities, offering real-time monitoring and logging of connections. This allows users to troubleshoot issues efficiently and maintain optimal performance of their connected devices. Moreover, the device supports multiple networking protocols, including DHCP and static IP addressing, providing further flexibility in network management.

With its compact design and robust enclosure, the UDS2100 can be easily integrated into existing systems without requiring significant modifications. Its reliability and performance make it suitable for various applications, including manufacturing, telecommunications, and medical devices. Overall, the Lantronix UDS2100 stands out as a reliable solution for businesses looking to modernize their infrastructure while maintaining compatibility with legacy equipment.
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