Dell Command Line Reference Guide for the S4048–ON 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.

redundancy force-failover stack-unit
Enter the keyword stack-unit then the stack-unit ID number.
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.

Introduced on the S4048-ON.
Introduced on the S3048-ON.
Introduced on the M I/O Aggregator. This command is supported in Programmable-Mux (PMUX) mode only.
Introduced on the S4820T.
Introduced on the S4810.
Introduced on the E-Series.
Introduced on the C-Series.
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.

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