Release Notes PN 93000531_F3
Digi Connect Wi-EM
82000983_F3 EOS
June 6, 2005
INTRODUCTION
This is a production release of firmware for the Digi Connect Wi-EM.
The Digi Connect Wi-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 Wi-EM
ENHANCEMENTS
Added user configurable option to set the wireless transmit
power
Added Poland and the Czech Republic to the list of supported
wireless country codes.
BUG FIXES
Fixed authentication issues with default web interface files.
Fixed HTTP 400 Bad Request status seen when the password
field was cleared on wireless client certificate uploads.
The stored client and trusted certificates were not getting
deleted in all cases.
Prevent transmit gaps on small amounts of data.
Limit 802.11 transmit rate to 1 and 2 mbps on Channel 14
because the hardware is not certified for higher rates.
Limit the wireless transmit power to 12 when Japan is
the configured country code.
Certificate files are now uploaded to a hidden directory -
this means any certificates that were used with the F1 binary
will need to be uploaded again.
KNOWN ISSUES
The current hardware doesn't allow user to set less than 6 dBm
wireless transmit power.
With encryption set to AES, serial throughput will be
lower than usual
It is not currently possible to configure the escape
characters used by client applications (connect, telnet,
and rlogin).
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
Due to certain browsers and their settings, the web interface
may not appear proper after after a firmware upgrade. If this
occurs, please clear your browser's cache or delete your
browser's temporary files.
When attempting to upload certificate files using Firefox,
seeing an intermittent error: "Unable to upload file:
invalid path (Code: -40)"
CONNECTING TO THE WIRELESS DEVICE
The device can only be configured over the wireless link with an
access point. In order to establish a wireless link the access
point must have authentication and encryption disabled. Furthermore
to ensure that the Connect Wi-EM establishes a link with the correct
access point the access point should use the SSID of "Connect". By
factory default our device scans through each wireless channel and
generates a list of access points. It then associates with the
access point with the strongest signal strength. However it will
choose to associate with an access point with SSID of "Connect" over
another access point that has a different SSID regardless of which
access point has the stronger signal strength. When the device
successfully associates with an access point its link LED will
go solid.
CONFIGURING THE WIRELESS DEVICE
Once link has been established the device can be discovered using the
"Digi Device Discovery" tool. Using this tool you can find the device
and if necessary assign it an IP address. Once the IP address has been
determined or established you can configure it using a web browser or
telnet. If at any point the device is configured in a state that it can
no longer be connected to, a factory reset can be done as described below
in the "RESETTING THE UNIT" section.
IP ASSIGNMENT NOTES
The Digi Connect Wi-EM supports three IP assignment methods:
* Static IP address
* DHCP
* Auto-IP
If a static address is enabled, it will be used.
If a static address is not enabled, and DHCP is enabled, the
unit will use an address supplied by a DHCP server regardless
of the state of Auto-IP configuration.
If a static address is not enabled, and Auto-IP is enabled,
it will be used to generate an address ONLY if DHCP is
disabled, or if DHCP is enabled and a DHCP server has not
responded to the DHCP query. If both are enabled, Auto-IP
has assigned an address, and then a DHCP server responds, the
Auto-IP address will be discarded and the DHCP address will
be used.
RESETTING THE UNIT
One feature of the Digi Connect Wi-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 new "set wireless transmit power" feature is not currently
documented in the CLI and RCI manuals.
In the CLI, it is added as a parameter on the set/show wlan
command. In the "show wlan" command, it is displayed as:
txpower : 6dbm
and in the "set wlan" it has the following syntax:
set wlan [txpower={16dbm | 14dbm | 12dbm | 10dbm | 8dbm | 6dbm}]
In the RCI, it is part of the data group and its
field is . The following values are valid
for the txpower field: 16dbm, 14dbm, 12dbm, 10dbm, 8dbm,
and 6dbm.
The configuration save and restore tools will save every
configurable parameter (including IP configuration) except
for some 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
82000983_F2
Added support for multiple users and permissions
Added support for TCP Keepalive
Added support for remote management using the Connectware server
Added support for DHCP Option 12
Added support for ADDP V2
Added support for OEM Customization
WPA enhancements:
- TLS, TTLS, and PEAP authentication methods
- CHAP, GTC, MD5, MSCHAP, MSCHAPv2, OTP, and PAP authentication
methods for use with TTLS and PEAP
- Client certificates for use with TLS
- Verification of server certificates
- CCMP (AES) encryption
Wireless networking enhancements:
- Separate authentication and encryption settings
- WEP with 802.1x authentication
- Cisco LEAP
- Settings for short preamble and antenna diversity (Wi-EM only)
- Display current authentication, encryption, and network statistics
Added support for exposing wireless statistics via RCI
Restructured the Web UI into HTML 4.01 compliance
Enabled the CLI PING command on this device
Added the option of enabling the CLI on a serial port
Fixed several issues with alarms including one problem where
snmptraps were continuely being sent out
Fixed several problems with backup/restore
Fixed bug with reporting incorrect ICMP stats
Added wireless country support and approval for many European
countries and Japan
WEP keys are now checked for length
Fixed a problem where network links would not come up when
connecting to a Leadership Network Hub
Fixed several RCI memory leaks
Added support for RTS toggle predelay and postdelay
On receiving an RCI reboot command, the unit would give
an incorrect response
Fixed a problem where using raw sockets resulted in lost
serial data when sending a NULL character
Fixed a problem where RCI over serial would stop accepting
data
Fixed a problem where the agent IP field in an SNMP trap
was incorrect if the unit received its IP address via
DHCP
Fixed a problem where changing the destination IP address
for SNMP traps required a reboot to become effective
82000983_E1
Fixed issue with wireless failing to work properly at cold
temperatures.
Fixed problem where socket connections to serial were not always
draining completely after the socket disconnected (#14000).
82000983_E
Initial product release.
82000983_1P
Pilot release.