Transfer download datatype configures the type of file to download to
the switch.
The types for download are:
code - Code File
config - Configuration File
sshkey-rsa1 - SSH-1 RSA Key File
sshkey-rsa2 - SSH-2 RSA Key PEM File
sshkey-dsa - SSH-2 DSA Key PEM File
sslpem-root - SSL Trusted Root Certificate PEM File
sslpem-server - SSL Server Certificate PEM File
sslpem-dhweak - SSL DH Weak Encryption Parameter PEM File
sslpem-dhstrong - SSL DH Strong Encryption Parameter PEM File
cli-banner - CLI Banner File
Note: SSH Key files can only be downloaded if SSH Server is administratively
disabled, and there are no active SSH sessions.