Administrator Guide

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 stack unit to become the primary stack unit. You can also use this command to upgrade the software on one stack
unit from the other when the other has been loaded with the upgraded software.
Syntax
redundancy force-failover stack-unit
Parameters
stack-unit Enter the keyword stack-unit then the stack-unit ID number.
Default Not configured.
Command Modes EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(0.0) Introduced on the M I/O Aggregator. This command is supported in Programmable-Mux
(PMUX) mode only.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series.
7.5.1.0 Introduced on the C-Series.
7.6.1.0 Introduced on the E-Series.
Usage Information
To provide a hitless or warm upgrade, use this command. 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.
redundancy primary
Set an RPM as the primary RPM.
Syntax
redundancy primary [rpm0 | rpm1]
To delete a configuration, use the no redundancy primary command.
Parameters
rpm0 Enter the keyword rpm0 to set the RPM in slot R0 as the primary RPM.
rpm1 Enter the keyword rpm1 to set the RPM in slot R1 as the primary RPM.
Default The RPM in slot R0 is the Primary RPM.
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, see the relevant DellEMC
Networking OS Command Line Reference Guide.
632 High Availability (HA)