Service Manual

High Availability (HA)

High availability (HA) in the Dell Networking OS is the conguration synchronization to minimize recovery time in the event of a route

processor module (RPM) failure.

In general, a protocol is dened as “hitless” in the context of an RPM failure/failover and not failures of a line card, SFM, or power module.

A protocol is dened as hitless if an RPM failover has no impact on the protocol.

You must specically 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 ash://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 ash://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-specic. For command information about other platforms, see the relevant Dell Networking

OS Command Line Reference Guide.

634 High Availability (HA)