Digi CM User manual

Digi CM and Passport
Troubleshooting Guide

Revision history—90002380
Revision Date Description
A June 2016 Initial release.
B January 2020 Updated and edited for unique password
change.
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© 2019 Digi International Inc. All rights reserved.
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Digi CM and Passport Troubleshooting Guide 2

Contents
Introduction to Digi CMand Passport Troubleshooting Guide
Log in to the web interface on the device 5
Failure to Boot (Corruption)
Device fails to boot and the READYLEDis not illuminated 6
Configuration data destroyed or corrupt 7
Network communication issues
No network connectivity 9
Serial port communication issues
Cable pinouts for connecting to Cisco/Sun RJ45 console ports 13
Cable pinouts for connecting DB9 and DB25 consoles and modems 13
DB-9 female console (DTE device) adapter 13
DB-25 female console (DTE device) adapter 14
DB-9 male console (DCE device) adapter 14
DB-25 male console (DCE device) adapter 15
Kill serial port connection 15
Reset a serial port 17
Reset a Digi CM serial port 17
Reset a Digi Passport serial port 18
Serial loopback testing 19
Java Support
Chrome 22
Internet Explorer or Firefox and security errors 22
Inactivity timeouts
Web server inactivity timeout 23
Serial port inactivity timeout 23
Port Access menu inactivity timeout 24
CLI Configuration Menu inactivity timeout (Digi Passport ONLY) 25
Digi CM and Passport Troubleshooting Guide 3

Digi CM and Passport Troubleshooting Guide 4
Authentication configuration
Web server authentication 26
Port Access menu authentication 26
Direct serial port authentication 27
Command Line (CLI) authentication 28
Security scan vulnerabilities
Digi CM change and feature requests

Introduction to Digi CMand Passport
Troubleshooting Guide
This guide contains troubleshooting information for common problems, and applies to the following
models:
nDigi CM (all models)
nDigi Passport (all models)
Log in to the web interface on the device
You can use the web interface to configure the firmware on the device. You are required to log in to
the web interface each time you access the interface.
1. Run the Device Discovery Utility or DPA utility.
2. Select the device from the device list.
3. Click Open web interface. A log in screen displays.
4. Enter the user name and password.
nUser name: The default user name is root.
nPassword: The unique, default password is printed on the device label. If a password is
not printed on the label, the password is dbps. If neither password works, the
password may have been updated. Contact your system administrator.
5. Click Sign in.
Digi CM and Passport Troubleshooting Guide 5

Failure to Boot (Corruption)
Device fails to boot and the READYLEDis not illuminated
Reset device to factory default
The Digi CM and Passport units can be reset to factory defaults by pressing and holding the hardware
factory reset button until the Ready LED on the front panel goes out.
Digi CM factory reset button:
Digi Passport factory reset button:
Follow recovery procedure
If the Digi CM or Passport units still fail to boot up, perform the recovery procedure.
1. Connect the console port on the rear panel of the Digi unit to a serial port on a workstation.
Use an Ethernet cable with a DB-9 adapter (one is shipped with the product and labeled as
console).
Digi CM and Passport Troubleshooting Guide 6

Failure to Boot (Corruption) Configuration data destroyed or corrupt
Digi CM and Passport Troubleshooting Guide 7
2. Set up a terminal emulation program such as HyperTerminal or PuTTY. Use the following port
parameters:
nbaud = 9600
ndata bits = 8
nparity = none
nstop bits = 1
nflow control = none
3. Reboot or power on the Digi unit.
4. Press the ESC key within three seconds of applying power to the device. The bios menu
appears.
5. Press 3:Firmware upgrade. The Firmware Upgrade menu appears.
6. Enter the information for the first menu items:
nProtocol: The choices are BOOTP or TFTP
nIP address assigned: Enter the IP address of the Digi unit
nServer IP address: The IP address of the BOOTP or TFTP server
nFirmware File Name: The filename for the firmware
Note Press the ESC key to back up to earlier menu screens.
7. Choose Start firmware upgrade. The firmware upgrade will take several minutes to process.
8. When the upgrade process is complete, press ESC to return to the main menu.
9. Choose Exit and boot from flash.
If this procedure fails to recover the unit, pursue an RMA.
Configuration data destroyed or corrupt
If the configuration data is destroyed or corrupted, the Digi console server automatically restores a
corrupted configuration file system to the factory default settings. However, if the Digi unit fails to
boot in spite of being reset to the factory default settings, the firmware can be restored by using the
Boot Loader program. To restore the Digi unit to the factory default configuration settings, you will
need to use a TFTP or BOOTP server to download the firmware from.

Failure to Boot (Corruption) Configuration data destroyed or corrupt
Digi CM and Passport Troubleshooting Guide 8
To use the Boot Loader program to flash new firmware, do the following:
1. Connect the console port on the rear panel of the Digi unit to a serial port on a workstation.
Use an Ethernet cable with a DB-9 adapter.
2. Set up a terminal emulation program such as HyperTerminal or PuTTY. Use the following port
parameters:
nbaud = 9600
ndata bits = 8
nparity = none
nstop bits = 1
nflow control = none
3. Reboot or power on the Digi unit.
4. Press the ESC key within three seconds of applying power to the device. The bios menu
appears.
5. Press 3:Firmware upgrade. The Firmware Upgrade menu appears.
6. Enter the information for the first menu items:
nProtocol: The choices are BOOTP or TFTP
nIP address assigned: Enter the IP address of the Digi unit
nServer IP address: The IP address of the BOOTP or TFTP server
nFirmware File Name: The filename for the firmware
Note Press the ESC key to back up to earlier menu screens.
7. Choose Start firmware upgrade. The firmware upgrade will take several minutes to process.
8. When the upgrade process is complete, press ESC to return to the main menu.
9. Choose Exit and boot from flash.
If this procedure fails to recover the unit, pursue an RMA.

Network communication issues
No network connectivity
Perform this troubleshooting process if the unit is not reachable on the network.
1. Check the LED activity for the Ethernet port. There should be a solid green for the 100Mbps LED
and flashing green for the Link/Act LED.
2. Make sure you are not behind a firewall or running any third party firewall software on your PC.
Digi CM and Passport Troubleshooting Guide 9

Network communication issues No network connectivity
Digi CM and Passport Troubleshooting Guide 10
3. Ping the IP address: ping <ip address>
Where the <ip address> represents the IP address assigned to the unit. If pinging the
device is unsuccessful, access the unit directly from the console port to confirm the network
settings.
a. Set up a terminal emulation program, such as HyperTerminal, using the following
port parameters to the console port:
nbaud = 9600
ndata bits = 8
nparity = none
nstop bits = 1
nflow control = none
b. Log in to the web interface on the device.
c. At the prompt, type: configmenu
d. In the Configuration menu, select menu item 1: Network configuration.
e. Select menu item 1: IP configuration.
f. Configure the network settings as appropriate for the local network.

Network communication issues No network connectivity
Digi CM and Passport Troubleshooting Guide 11
g. Save and apply the settings from the main menu.
h. If it is still not possible to ping the unit, please refer to the factory reset procedure.

Serial port communication issues
Cable pinouts for connecting to Cisco/Sun RJ45 console ports 13
Cable pinouts for connecting DB9 and DB25 consoles and modems 13
Kill serial port connection 15
Reset a serial port 17
Serial loopback testing 19
Digi CM and Passport Troubleshooting Guide 12

Serial port communication issues Cable pinouts for connecting to Cisco/Sun RJ45 console ports
Digi CM and Passport Troubleshooting Guide 13
Cable pinouts for connecting to Cisco/Sun RJ45 console ports
The RJ-45 8-pin configuration matches all SUN and Cisco RJ-45 console port configurations, enabling
straight through CAT 5 cabling without pinout concerns.
Cable pinouts for connecting DB9 and DB25 consoles and
modems
The diagrams below show commonly used cabling pinouts for connecting to DB9 and DB25 style
console ports and modems. Data Terminal Equipment (DTE) devices typically require cross-over or
null-modem cabling pinouts where the Transmit pins are wired to Receive pins and vice versa.
Common examples of DTE devices are PCs, dumb terminals and printers. Data Communication
Equipment (DCE) devices use straight through cabling . Common examples of DCE devices are
modems and UPS equipment.
DB-9 female console (DTE device) adapter
Digi 8-pack reorder PN 76000671
RJ-45 Signal DB-9F Signal
1 CTS 7 RTS
2 DSR 4 DTS

Serial port communication issues Cable pinouts for connecting DB9 and DB25 consoles and modems
Digi CM and Passport Troubleshooting Guide 14
RJ-45 Signal DB-9F Signal
5 DCD 3 TxD
3 RxD 5 GND
4 GND 2 RxD
6 TxD 1 DCD
7 DTR 6 DSR
8 RTS 8 CTS
DB-25 female console (DTE device) adapter
Digi 8-pack reorder PN 76000673
RJ-45 Signal DB-9F Signal
1 CTS Connected to 4 RTS
2 DSR Connected to 20 DTS
5 DCD Connected to 2 TxD
3 RxD Connected to 7 GND
4 GND Connected to 3 RxD
6 TxD Connected to 6 DCD
7 DTR Connected to 8 DSR
8 RTS Connected to 5 CTS
DB-9 male console (DCE device) adapter
Digi 8-pack reorder PN 76000702

Serial port communication issues Kill serial port connection
Digi CM and Passport Troubleshooting Guide 15
RJ-45 Signal DB-9F Signal
1 CTS 8 CTS
2 DSR 6 DSR
3 RxD 2 RxD
4 GND 5 GND
5 DCD 1 DCD
6 TxD 3 TxD
7 DTR 4 DTR
8 RTS 7 RTS
DB-25 male console (DCE device) adapter
Digi 8-pack reorder PN 76000670
RJ-45 Signal DB-9F Signal
1 CTS Connected to 5 CTS
2 DSR Connected to 6 DSR
5 RxD Connected to 3 RxD
3 GND Connected to 7 GND
4 DCD Connected to 8 DCD
6 TxD Connected to 2 TxD
7 DTR Connected to 20 DTR
8 RTS Connected to 4 RTS
Kill serial port connection
In the event there is a stuck process on a port, killing the process may release the port for connection.
1. Log in to the web interface on the device
2. In the web interface, select Serial port >Connection.

Serial port communication issues Kill serial port connection
Digi CM and Passport Troubleshooting Guide 16
3. Select the desired port.
Digi Passport
a. Click the desired port number. The Serial port users logged on list dialog appears.
Digi CM
a. Click the desired port number.
b. Click Port User Management. The Serial port users logged on list dialog appears.
4. Click the selection box in the box for the connection.
5. Click Kill.
Kill connection for Digi Passport

Serial port communication issues Reset a serial port
Digi CM and Passport Troubleshooting Guide 17
Kill connection for Digi CM
Reset a serial port
Reset a Digi CM serial port
You can reset a serial port from the web interface or the command prompt.
Web interface
1. Log in to the web interface on the device.
2. Select Serial port > Configuration.
3. Select the port number.
4. Click Reset.

Serial port communication issues Reset a serial port
Digi CM and Passport Troubleshooting Guide 18
Command (root) prompt
# portreset <port number>
Where <port number> is the port number you want to reset.
For example, if you want to reset port number 5: # portreset 5
Reset a Digi Passport serial port
You can reset a serial port from the web interface or the command prompt.
Web interface
1. Log in to the web interface on the device.
2. Select Serial port > Configuration.
3. Select the port number.
4. Click Port Management.
5. Click Reset.

Serial port communication issues Serial loopback testing
Digi CM and Passport Troubleshooting Guide 19
Command (root) prompt
# port reset <port number>
Where <port number> is the port number you want to reset.
For example, if you want to reset port number 5: # port reset 5
Serial loopback testing
If the serial cabling checks out and the above steps do not result in successful serial communication,
loopback testing should be performed to check the hardware integrity.
1. Insert the loopback plug (shipped with the product) into the applicable port.
RJ-45 Loopback Plug pinout
1 CTS 8 RTS
2 DSR and DCD 7 DTR
3 RxD 6 TxD
4 GND 4 GND
2. Log in to the web interface on the device.

Serial port communication issues Serial loopback testing
Digi CM and Passport Troubleshooting Guide 20
3. Verify the serial port configuration for Telnet.
a. Click Serial port >Configuration.
b. Select the port number.
c. Expand Host mode configuration section.
d. Verify these settings:
nHost mode: Console server
nListening TCP port: an entry should be made
nProtocol: Telnet
4. From a Microsoft Windows CMD line, Unix/Linux prompt, or terminal emulator software, such
as PuTTY or HyperTerminal, telnet to the IP address and the listening port number of the Digi
CM unit. For example:
C:\> telnet 192.168.0.2 7001
5. You are prompted to log in.
nUser name: The default user name is root.
nPassword: The unique, default password is printed on the device label. If a password is
not printed on the label, the password is dbps. If neither password works, the
password may have been updated. Contact your system administrator.