The value of tmnxCpmCardRebootHold specifies putting the standby CPM card in hold on a soft reboot, preventing the standby CPM+SFM from coming back online. To do so, this attribute must be set to 'true(1)' together with tmnxCpmCardReboot set to 'doAction(1)' and only for the standby CPM; otherwise, the set will fail with error 'inconsistentValue'. For the active CPM, tmnxCpmCardRebootHold can't be set to 'true(1)' and will always return a value of 'false(2)'. When tmnxCpmCardRebootHold is set to 'true(1)', the standby CPM reboots as expected, but remains in a booting state (in hold). The setting of tmnxCpmCardRebootHold to 'true(1)' prevents the active CPM from declaring the standby CPM dead because it failed to boot. MIB attribute tmnxHwFailureReason will be updated for the standby CPM indicating that there is no SFM. The system is not redundant while tmnxCpmCardRebootHold is 'true(1)'. If the active CPM fails, or is manually rebooted, the standby CPM will also reboot. tmnxCpmCardRebootHold is set to 'false(2)' when tmnxCpmCardReboot for the standby CPM is set to 'doAction(1)' without also setting tmnxCpmCardRebootHold, or if the active CPM reboots.