Reference Guide

Version 8.3.1.0 Added the all option.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the E-Series
Usage
Information
Enabling this command keeps the failed RPM in the failed state. If there are two RPMs in the
system, enabling this command prevents the failed RPM from becoming a working Standby
RPM. If there is only one RPM in the system, the failed RPM does not recover and affects the
system.
redundancy force-failover
Force the secondary RPM to become primary RPM or force an SFM (on an E-Series chassis only) to become the standby
SFM. This command can also be used to upgrade the software on one RPM from the other when the other has been
loaded with the upgraded software.
C-Series, E-Series, S4810
Syntax
redundancy force-failover {rpm | sfm [slot-number] }
Parameters
Enter the
keyword rpm to
force the
secondary RPM
to become the
primary RPM.
Enter the keyword rpm to force the secondary RPM to become the
primary RPM.
sfm slot-number EtherScale Only — Enter the keyword sfm followed by the SFM slot
number. The range is 0 to 8.
Default Not configured.
Command Modes EXEC Privilege
Command History
Version 8.3.12.0 Introduced on the S4810.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.5.1.0 Introduced on the C-Series.
Version 7.6.1.0 Introduced on the E-Series.
Usage
Information
Use this command 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. A warm upgrade is possible for major
releases and lower, while a hitless upgrade can only support patch releases.
NOTE: On the C-Series, this command could affect traffic (even during hot-failover)
because the switch fabric present on the RPM is taken down during the failover.
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