Uploading Core Dumps from Controller to a TFTP or FTP Server
Note 
This procedure is not applicable for Cisco 2106 and 4400 controllers.
To upload the core dump file from the flash memory of a controller to a TFTP or FTP server using the controller CLI, follow these steps:
Step 1 To see information about the core dump file in flash memory, enter this command:
show coredump summary
Information similar to the following appears:
Core Dump is disabled
Core Dump file is saved on flash
Sw Version.................................... 6.0.83.0
Time Stamp.................................... Wed Feb 4 13:23:11 2009
File Size..................................... 9081788
File Name Suffix........................... filename.gz
Step 2 To transfer the file from the controller to a TFTP or FTP server, enter these commands:
•transfer upload mode {tftp | ftp}
•transfer upload datatype coredump
•transfer upload serverip server_ip_address
•transfer upload path server_path_to_file
•transfer upload filename filename
Note After the file is uploaded, it ends with a .gz suffix. If desired, you can upload the same core dump file multiple times with different names to different servers.
Step 3 If you are using an FTP server, also enter these commands:
•transfer upload username username
•transfer upload password password
•transfer upload port port
Note The default value for the port parameter is 21.
Step 4 To view the updated settings, enter this command:
transfer upload start
Step 5 When prompted to confirm the current settings and start the software upload, answer y.
