The possible operations upgrading the software. The description of each option is given below: none : No upgrade operation is selected. download : This operation to initiate the file transfer of software package from TFTP server specified by wwpLeosTceSwXgradePackagePath to wwpLeosTceSwXgradeDestPath. The default TFTP server will be used for file transfer if the wwpLeosTceSwXgradeTftpServer is set to empty string. install : This operation to install the software to the standby CM (if present) and all line cards. The image files are either stored in the TFTP server specified by wwpLeosTceSwXgradePackagePath and wwpLeosTceSwXgradeTftpServer or the compact flash of the active CM. activate : This operation to activate any new software installed on all the blades. the system will automatically revert to the previous software package if a protect operation is not set within a time period specified by wwpLeosTceSwXgradeRevertTimeout. If no time period is specified (wwpLeosTceSwXgradeRevertTimeout value 0) then the system will not revert automatically and it will remain in the unprotected state indefinitely. WARNING: Activating software requires a system restart. protect : This operation to protect a new software package. If the protect operation is not entered before the protect timeout is reached specified by wwpLeosTceSwXgradeRevertTimeout, the system will automatically revert to the previous software package. revert : This operation to revert to the previous software package. validate : This operation to validate the software package at the location specified by the wwpLeosTceSwXgradePackagePath. Setting the wwpLeosTceSwXgradePackagePath to empty string will validate the installed software. run : This operation refers to the downloading, parsing, and executing of a specified command file as initiated through CLI, DHCP or the file transfer MIB module. This is used in appropriate notifications to report completion of such event. An error will be returned when this object is attempted to be set to this value using an SNMP set-request.