User Manual

78 Chapter 17 Troubleshooting
3. Reboot the PortServer TS 8/16 and press v when the LEDs begin to
blink.
POST output appears on the terminal screen.
Verifying TFTP on a UNIX System
Use this procedure to verify that TFTP is working correctly on your UNIX
host.
Note: This procedure, which uses a TFTP transfer of the Digi Device’s boot image
between two UNIX hosts, enables you to compare the size of the boot image
before and after it is transferred, enabling you to determine if TFTP is working
properly.
1. Access a root prompt on the UNIX host.
2. Make sure that you are not in the /tftpboot directory.
3. Enter this command:
tftp ipaddress
where ipaddress is the IP address of the UNIX host.
A TFTP prompt appears.
4. At the prompt, enter the following command:
binary
5. Enter this command at the TFTP prompt:
tftp > get tftp_file_name
where tftp_file_name is the name of the Digi Device’s boot image
in the /tftpboot directory.
6. Enter this command at the TFTP prompt to exit TFTP:
tftp quit
7. Compare the size of the original file against the transferred file using
this command:
ls -l tftp_file_name /tftpboot/tftp_file_name
If the file sizes match, TFTP is working properly.
Troubleshooting TFTP Problems
Here are some things to check if you encounter TFTP problems.
• Verify that the /tftpboot directory exists and has read, write and exe-
cute (777) permissions with this command: ls -1 /tftpboot
• If necessary, use this command to create the directory:
mkdir /tftpboot
• If necessary, use this command to change permissions of the direc-
tory to read, write and execute:
chmod 777 /tftpboot
• Verify that the file /tftpboot/ftp_file_name exists and has read and
execute permissions with this command:
ls -l /tftpboot/ftp_file_name
where ftp_file_name is the name of the firmware boot image
• If necessary, use this command to change permissions of the file to
read and execute: