Dell C9000 series, Reference Manual

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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 .
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