Administrator Guide
High Availability (HA)
High availability (HA) in the Dell Networking operating software is configuration synchronization to minimize recovery time in the event of
a route processor module (RPM) failure.
In general, a protocol is defined as “hitless” in the context of an RPM failure/failover and not failures of a line card, SFM, or power module.
A protocol is defined as hitless if an RPM failover has no impact on the protocol.
You must specifically enable some protocols for HA. Some protocols are only hitless if related protocols are also enabled as hitless (for
example, the redundancy protocol command).
Topics:
• redundancy auto-failover-limit
• redundancy disable-auto-reboot
• redundancy force-failover
• redundancy primary
• redundancy reset-counter
• redundancy synchronize
• show redundancy
redundancy auto-failover-limit
Specify an auto-failover limit for RPMs and PEs. When a non-recoverable fatal error is detected, an automatic RPM or PE failover occurs.
This command does not affect user-initiated (manual) failovers.
C9000 Series
Syntax
redundancy auto-failover-limit [count number [period minutes] | period
minutes]]
To disable the auto-failover limit control, use the no redundancy auto-failover-limit command.
Parameters
count
number
Enter the number of times the RPMs or PEs can automatically failover within the period
defined in the period parameter. The range is from 2 to 10. The default is 3.
period
minutes
Enter a duration in which to allow a number of automatic failovers (limited to the number
defined in the count parameter). The range is from 5 to 9000 minutes. The default is 60
minutes.
Default
• Count: 3
• Period: 60 minutes
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
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 ExaScale.
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