Lantronix UDS2100 manual Flush Mode Buffer Flushing, Pack Control

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7: Setup Mode: Channel Configuration

(3)The TCP connection closes even if the remote site does not acknowledge the disconnection.

(4)When there is a network connection to or from the serial port, the state LED turns off instead of blinking.

(5)When Ctrl+D or Hex 04 is detected, the connection is dropped. Both Telnet Mode and Disconnect with EOT must be enabled for Disconnect with EOT to function properly. Ctrl+D is only detected going from the serial port to the network.

(6)When DTR transitions from a high state to a low state, the network connection to or from the serial port drops.

Flush Mode (Buffer Flushing)

Using this parameter, you can control line handling and network buffers with connection startup and disconnect. The default setting is 00.

FlushMode (00) ? _

You can also select between two different packing algorithms.

Note: All bit positions in the table that are blank represent “don’t care” bits for that particular option, which can be set to either a 0 or 1 value.

Table 7-8. Flush Mode Options

	Function	7	6		5	4	3	2		1	0
	Input Buffer (Serial to Network)

	Clear with a connection initiated from the device to the network					1

	Clear with a connection initiated from the network to the device				1

	Clear when the network connection to or from the device is		1
	disconnected		1
	disconnected

	Output Buffer (Network to Serial)

	Clear with a connection initiated from the device to the network										1

	Clear with a connection initiated from the network to the device									1

	Clear when the network connection to or from the device is							1
	disconnected							1
	disconnected

	Alternate Packing Algorithm (Pack Control)

	Enable	1

Pack Control

The packing algorithms define how and when packets are sent to the network. The standard algorithm is optimized for applications in which the unit is used in a local environment, allowing for very small delays for single characters, while keeping the packet count low. The alternate packing algorithm minimizes the packet count on the network and is especially useful in applications in a routed Wide Area Network (WAN). Adjusting parameters in this mode can economize the network data stream.

Pack control settings are enabled in Flush Mode. Set this value to 00 if you do not need specific functions.

UDS2100 User Guide

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Contents UDS2100 User Guide Copyright & Trademark ContactsRevisions Date Rev CommentsContents Setup Mode Server Configuration Warranty Figures TablesUsing This Guide Purpose and AudienceChapter Summary Chapter DescriptionAdditional Documentation DocumentApplications IntroductionApplication Examples Introduction Configuration Methods Additional FeaturesProtocol Support Product Information Label Sample Hardware Address 00-20-4A-14-01-18 or 00204A140118Package Contents Getting StartedInstalling the UDS To install the unitRequired Information Hardware AddressIP Address IP Address Subnet Mask GatewayAssigning the IP Address DeviceInstaller Installing DeviceInstallerAssigning an IP Address Select Assign a specific IP address and click NextAccessing the UDS2100 Using DeviceInstaller Viewing the Current ConfigurationTo view the units current settings Adding the Unit to the Manage ListSetting Getting StartedNext Step To configure the unit using a Telnet sessionPress Enter within 5 seconds Assigning the IP Address Serial Port Login Configuration Using Web Manager Accessing UDS2100 Using DeviceInstallerNetwork Configuration Lantronix Web ManagerTo assign an IP address automatically Automatic IP Address ConfigurationSelect Obtain IP address automatically Static IP Address Configuration Ethernet ConfigurationSelect Use the following IP configuration To assign an IP address manuallyServer Configuration To configure the UDS2100’s device server settingsServer Configuration AdvancedHost List Configuration To configure the host listChannel 1 and Channel 2 Configuration Serial SettingsRetry Settings Host InformationPort Settings ChannelPack Control Flush Input Buffer Serial to NetworkTo configure a channel’s TCP settings Connection Settings TCPFlush Output Buffer Network to Serial Connect Mode Passive Connection Connect Mode Active ConnectionEndpoint Configuration Connect ProtocolDisconnect Mode Common OptionsTo configure a channel’s UDP settings Connection Settings UDPDatagram Mode Apply Settings Apply Factory DefaultsAccessing Setup Mode Configuration via Telnet or Serial Port Setup ModeTelnet Connection Serial Port Connection To establish a Telnet connectionExiting Setup Mode To exit setup modeSetup Mode Server Configuration Server Configuration OptionIP Address Set Gateway IP AddressChange Telnet Configuration Password Netmask Number of Bits for Host PartDhcp Name Network Class Host Bits NetmaskSetup Mode Server Configuration Channel 1 Option Setup Mode Channel ConfigurationBaudrate Interface Mode Mode OptionCommon I/F Mode Setting Binary FlowConnect Mode Port NumberFlow Control Option Hex Port Numbers Reserved forConnect Mode Option Response Incoming ConnectionActive Startup Manual Connection Address Example To enable the hostlist Datagram TypeModem Mode MessageMeaning No CarrierModem Mode Function Command Send the Escape Sequence +++ in Modem ModeAuto Increment Source Port Disconnect Mode Option Remote IP AddressRemote Port DisConnModeFlush Mode Buffer Flushing Pack ControlPacking Interval Trailing CharactersSend Characters OptionDisConnTime Inactivity Timeout Channel Port PasswordSend Characters Telnet Terminal TypeExpert Settings Option Setup Mode Advanced SettingsTCP Keepalive time in seconds ARP Cache timeout in seconds Disable Monitor Mode at bootupEnable alternate MAC Http Port NumberSecurity Settings Option Disable SnmpDisable Telnet Setup Snmp Community NameDisable Tftp Firmware Update Disable Port 77FE HexDisable Web Server Disable Web SetupDefault Settings Option Channel 1 and Channel 2 Configuration DefaultsExpert Settings Defaults Security Settings DefaultsSetup Mode Advanced Settings Firmware Upgrades Using Tftp Graphical User InterfaceObtaining Firmware Reloading Firmware ROM FileUsing Tftp Command Line Interface To recover firmwareFirmware Upgrades Monitor Mode Entering Monitor Mode Using the Serial PortEntering Monitor Mode Using the Network Port Monitor Mode CommandsCommand Command Name Function Response MeaningTroubleshooting and Contact Information LEDsDiagnostic, Power, and Serial Port LEDs UDS2100 LEDs LEDs MeaningProblems and Error Messages Problem/Message Reason SolutionProblem/Message Reason Solution Technical Support Technical Support Europe, Middle East, and AfricaConnections and Pinouts Serial Connector PinoutsUDS2100 Serial Ports Reset Button Ethernet Connector Pinouts Power PlugTo reset the unit to factory defaults Network PortTechnical Specifications Category DescriptionCategory Description Transient over voltages Alternative Ways to Assign an IP Address AutoIPARP and Telnet To assign a temporary IP addressConversion Table Converting Binary to HexadecimalDecimal Binary Hex Scientific Calculator Warranty Compliance and Disclaimer Disclaimer and Supplementary Information Index