Dell PowerSwitch S4820T FTOS 8.3.19.0 Command Line Reference Guide for the S48 - Page 569

Parameters Defaults Command Modes Command History Usage Information Example Example (force-failover sfm) rpm sfm slot-number Enter the keyword rpm to force the secondary RPM to become the primary RPM. EtherScale Only - Enter the keyword sfm followed by the SFM slot number. Range: 0 to 8. Not configured. EXEC Privilege Version 8.3.19.0 Version 8.3.12.0 Version 8.1.1.0 Version 7.5.1.0 Version 7.6.1.0 Introduced on the S4820T. Introduced on the S4810. Introduced on E-Series ExaScale Introduced on C-Series Introduced on E-Series This command can be used to provide a hitless or warm upgrade. A hitless upgrade means that a software upgrade does not require a reboot of the line cards. A warm upgrade means that a software upgrade requires a reset of the line cards and SFMs. A warm upgrade is possible for major releases and lower, while a hitless upgrade can only support patch releases. You load the software upgrade on one RPM and then issue this command with the rpm keyword to move the software to the other RPM. The system senses the condition and provides a series of prompts appropriate to that context, as shown in the following example: Note: On C-Series, this command could affect traffic (even during hot-failover) since the switch fabric present on the RPM is taken down during the failover. FTOS#redundancy force-failover rpm Peer RPM's SW version is different but HA compatible. Failover can be done by warm or hitless upgrade. All linecards will be reset during warm upgrade. Specify hitless upgrade or warm upgrade [confirm hitless/warm]:hitless Proceed with warm upgrade [confirm yes/no]: FTOS#redundancy force-failover sfm 0 %TSM-6-SFM_FAILOVER: Standby switch to SFM 8 Standby switch to SFM 0 FTOS# redundancy primary c e Set an RPM as the primary RPM. Syntax redundancy primary [rpm0 | rpm1] High Availability (HA) | 569