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

• 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.

High Availability (HA) 803