Troubleshooting TFTP

Here are some things to check if you encounter TFTP problems.

Procedure

• Verify that the /tftpboot directory exists and has read, write and execute (777) permissions with this command:

  ls -l /tftpboot

  If necessary, use this command to create the directory:

  mkdir /tftpboot

  If necessary, use this command to change permissions of the directory 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 specified by the Digi Device.

If necessary, use this command to change permissions of the file to read and execute:

chmod 666 /tftpboot/ftp_file_name

• Verify that the inetd.conf file is properly configured for tftp by displaying the file /etc/inetd.conf.

An entry similar to this should be uncommented:

tftp dgram udp something

where something will vary with each operating system.

For controlled TFTP access, make sure that the file /etc/tftpaccess.ctl exists and verify that it only allows access to public directories. If this file is not present, tftp will allow full access. A sample file is located in the directory /usr/lpp/tcpip/samples.

• Restart the inetd process with these two commands:

  ps -ef | grep inetd

  This will report back the inetd process number.

  Kill -1 inetd_PID

  Where inetd_PID is the process number for the inetd process reported by the previous command.