Administrator Guide

RPM Synchronization
Data between the primary (management) and standby RPMs is synchronized immediately after bootup.
After the two RPMs have performed an initial full synchronization (block sync), the system automatically updates only changed data
(incremental sync). The data that is synchronized consists of configuration data, operational data, state and status, and statistics
depending on the version of the Dell Networking OS.
You can manually synchronize the primary and standby RPMs at any time by entering the redundancy synchronize full
command.
Forcing an RPM Failover
To force an RPM failover, use the following command.
Use this feature when you are replacing an RPM and when you are performing a warm upgrade.
• To trigger an RPM failover.
EXEC Privilege mode
redundancy force-failover rpm
NOTE: You can also force the port extender to failover from the RPM, using the redundancy force-failover pe
pe-id command in EXEC Privilege mode.
Dell#redundancy force-failover rpm
Dell#redundancy force-failover pe pe-id
Specifying an Auto-Failover Limit
When a non-recoverable fatal error is detected, an automatic failover occurs.
However, the Dell Networking OS is configured to auto-failover only three times within any 60-minute period. You may specify a different
auto-failover count.
To re-enable the auto-failover-limit with its default parameters, use the redundancy auto-failover-limit command without
parameters.
• Set a different auto-failover count.
CONFIGURATION mode
redundancy auto-failover-limit
• Re-Enable the auto-failover-limit with its default parameters.
CONFIGURATION mode
redundancy auto-failover-limit
Disabling Auto-Reboot
To disable auto-reboot, use the following command.
• Prevent a failed stack unit from rebooting after a failover.
CONFIGURATION mode
redundancy disable-auto-reboot
High Availability (HA)
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