Service Manual

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. The feature is available on Dell Networking OS.
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:
• patch flash://RUNTIME_PATCH_DIR
• process restartable
• redundancy auto-failover-limit
• redundancy disable-auto-reboot
• redundancy force-failover
• redundancy primary
• redundancy protocol
• redundancy reset-counter
• redundancy sfm standby
• redundancy synchronize
• show patch
• show processes restartable
• show redundancy
patch flash://RUNTIME_PATCH_DIR
Insert an In-Service Modular Hot-Fix patch.
Syntax
patch flash://RUNTIME_PATCH_DIR/patch-filename
To remove the patch, use the no patch flash://RUNTIME_PATCH_DIR/patch-filename
command.
Defaults none
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
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.2.1.0 Introduced.
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