This object is used to initiate a TFTP file transfer.
If nbsCmmcTftpSessStatus is not active (4), the Agent
should report the value inactive (1).
The Manager may initiate a session between the Agent
and the host specified in nbsCmmcTftpSessHostIp by
changing the value of this object.
Setting the value downloadNM (2) tells the Agent to
transfer its firmware image from the host to itself.
Setting the value uploadNM (3) tells the Agent to
transfer its firmware image from itself to the host.
Setting the value downloadPar (4) tells the Agent to
transfer a previous backup of its configuration from
the host to itself. Setting the value uploadPar (5)
tells the Agent to send a backup file of its current
configuration to the host.
For any other type of file, the Manager should set
this value to downloadFile (6) to send a file from the
host to the NM, and uploadFile (7) to transfer a file
from the NM to the host.