CLI Guide

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High Availability (HA)
High availability (HA) in the Dell Networking OS is the 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, using the redundancy protocol command).
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,
see the relevant Dell Networking OS Command Line Reference Guide.
Version Description
9.8(2.0) Introduced on the S3100 series.
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.
High Availability (HA)
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