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File download from a TFTP server may take a long time, and therefore fail, if there are many Quality of
Service elements (ACLs, policers, etc.) present. In this case, it is recommended to copy the TFTP file to
the backup configuration file, and then copy the backup file to the running / startup configuration file.
When using tftp to copy files, it is recommended to set the tftp server timeout to 10-20 second.
The device does not accept new commands while files are being copied; however, the user does not
receive notification that the device is busy copying, and will "ignore" the command. Note that this
behavior occurs only at the session, which initiated the copy command; response to activity on other
management sessions will result in a delay, but will not be ignored.
When a file is copied to the running configuration file or to the startup configuration file, the data in the file
is checked. If the check fails, the file is not downloaded, and the user is notified of the error. However, the
user should use caution when copying a file from a TFTP server to the backup configuration file, because
there is no check of data.An attempt to display the corrupted backup configuration file (show backup) will
result in information which is meaningless to the user (or even a blank row).
The device does not accept new commands while files are being copied; however, the user does not
receive notification that the device is busy copying, and will "ignore" the command. Note that this
behavior occurs only at the session, which initiated the copy command; response to activity on other
management sessions will result in a delay, but will not be ignored.
Understanding Invalid Combinations of Source and Destination
Some invalid combinations of source and destination exist. Specifically, the following cannot be copied:
If the source file and destination file are the same file.
xmodem cannot be a destination. Can only be copied to image, boot and null.
tftp cannot be the source and destination on the same copy.
Copy Character Descriptions:
Character
Description
!
For network transfers, an exclamation point indicates that the copy process is taking
place.
Each exclamation point indicates the successful transfer of ten packets (512 bytes each).
.
For network transfers, a period indicates that the copy process timed out. Many periods in
a
row typically mean that the copy process may fail.
Copying image file from a Server to Flash Memory
Use the copy source-url image command to copy an image file from a server to Flash memory.
Copying boot file from a Server to Flash Memory
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