Release Notes PN 93000516 Digi Connect EM 82000904_E EOS July 1, 2004 INTRODUCTION This is a production release of firmware for the Digi Connect EM. The Digi Connect EM embedded device server module is one of the industry's most powerful and compact embedded system platforms that allows you to add web-enabled networking using a variety of connectivity options. It combines true "plug-and-play" functionality with the freedom and flexibility of complete product customization. SUPPORTED PRODUCTS Digi Connect EM ENHANCEMENTS New SNMP MIBs were added including: RS-232, character, and device info MIBs. SNMP traps were added that allow the generation of SNMP traps when logins, authentication failures, network linkage, and cold startup events occur. In addition SNMP traps are supported with the alarm feature. The alarm feature allows emails and/or SNMP traps to be generated when there is a GPIO signal change or a particuliar data pattern is seen from incoming serial data. The Portbuffering feature was added that allows buffering of incoming ASCII data from the serial port. BUG FIXES A memory leak was fixed that occured in rare situations during network data transfer. A problem with data loss on the serial port at 230400k was fixed. KNOWN ISSUES It is not currently possible to configure the escape characters used by client applications (connect, telnet, and rlogin). When attempting to upgrade the firmware on a unit which has password authentication enabled, this release requires one to disable passwords during the time period of the firmware upgrade. When attempting to replace files in the file system, simply overwrite the existing version of the file rather than deleting the file first. Attempting to delete the file first defeats the internal file versioning maintained by the firmware, and can confuse your browser's cache. For the most consistent experience with the user interface, it is suggested that you clear your Internet cache. Microsoft Internet Explorer 6 Service Pack 1 (SP1) has a known problem where it displays the error message "Internet Explorer Cannot Open" when you use an HTTPS URL to access this Digi product. The following Microsoft article explains the problem: http://support.microsoft.com/default.aspx?kbid=812935 DOCUMENTATION ERRATA Password authentication can be enabled in this release, but authentication is OFF BY DEFAULT. A security screen has been added to the user interface to allow one to enable username and password authentication. When password checking is enabled, the user will be challenged when accessing the initial screen of the UI, and if the user uses a Digi Device Discovery tool. RESETTING THE UNIT One feature of the Digi Connect EM firmware is an ability for a user to both soft reset the unit as well as reset the unit to its factory defaults. Both functions may be invoked via the "reset" button on the edge of the module, labelled SW1 on the board. * If the module is running (i.e. more than a few seconds after power on), holding the button for a second and then releasing it will soft reset the unit. * If the button is pressed for more than 10 seconds from the power on of the unit, it will prepare to reset the unit to its factory default state. Once the unit is prepared to reset, it will blink "1-5-1" on the red LED. Releasing the button will then reset the configuration. ADDITIONAL INFORMATION The configuration save and restore tools will save every configurable parameter (including IP configuration) except for those related to password authentication. ENABLING THE WEB USER INTERFACE The embedded web user interface is ALWAYS available at the following URL: http://ip-address-of-device/home.htm It is also available as the default configuration interface at the following URL: http://ip-address-of-device If your device contains the Java configuration applet it can be executed by connecting to the embedded web user interface and clicking the "Launch" button on the "Home" page under the "User Interfaces". It can be made to be the default configuration interface by clicking the "Set as Default" button on the same page. The Java Configuration Applet may remain in the unit's file system without affecting the embedded web user interface. If you would like to use the Java Configuration Applet as an alternative, simply upload the index.htm file as a file with an alternate name (e.g. applet.htm). You would then be able to use the Java Configuration Applet by accessing the following URL: http://ip-address-of-device/applet.htm HISTORY 82000904D Connection and session management has been added to the CLI. The commands related to the manipulation of connections and/or sessions includes: who -- list connections kill -- attempt to kill a connection status -- list all sessions associated with a specified connection close -- attempt to close a session associated with a specific connection reconnect -- if we have "escaped" from a client session back to the CLI, this allows us to return control to the session connect -- from the CLI, send data to/from a serial port, escape character is ^[ telnet -- from the CLI, initiate a telnet session with a remote device, escape character is ^] rlogin -- from the CLI, initiate an rlogin session with a remote device, escape character is ~ The ability to list connections and to attempt to kill connections has been added to web interface. The ability to connect the CLI via rlogin has been added. The ability to initiate an automatic connection between a serial port and a remote network device via rlogin has been added. The ability to enable full duplex ethernet as well as auto duplex negotiation has been added. The ability to influence the way that the unit forwards data from the serial port to the network has been added. This serial over TCP forwarding allows one to insert buffering between the serial port and the network socket for a connection. This buffering allows one to "hold off" on pushing received serial data into the queue for network transmission until certain criteria are met, including the amount of data received, gaps of idle time of a certain length, and/or specific data patterns. This new buffering capability is off by default. The ADDP discovery / IP assignment service may now be completely disabled. A low-level serial configuration interface has been added. When enabled, it allows one to use the DSR modem signal to shift serial port 1 into a special mode where received data is interpreted as a set of RCI commands. Since enabling the feature causes the standard interpretation of the DSR signal to be lost, it is disabled by default. Under certain conditions, received serial data would unexpectedly get duplication of 0xFF characters in the data stream. This now only happens when character marking is explicitly requested. The units were not properly detecting RealPort server disconnects, so were not gracefully recovering from network outages for RealPort connections. 82000904C Initial Release.