Reference Guide

20
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).
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
High Availability (HA)
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