Users Guide

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).
Topics:
• patch flash://RUNTIME_PATCH_DIR
• redundancy disable-auto-reboot
• redundancy force-failover
• redundancy primary
• redundancy protocol
• redundancy reset-counter
• redundancy synchronize
• show patch
• 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, 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.
Usage
Information
The patch filename includes the Dell Networking OS version, the platform, the CPU, and the process
it affects (FTOS-platform-cpu-process-patchversion.rtp). For example, a patch labeled
“7.8.1.0-EH-rp2-l2mgr-1.rtp” identifies that this patch applies to Dell Networking OS version 7.8.1.0 —
E-Series platform, for RP2, addressing the layer 2 management process, and this patch is the first version
of this patch.
19
530 High Availability (HA)