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Redundancy (Switch 8212zl)

Overview

Redundancy provides the ability to keep your switch operating by using dual

management modules, one active module and one standby module. In the

event of a failure, the currently active management module will switchover to

the standby management module, which then becomes the active

management module.

The advantages of redundant management are:

■ Maintaining switch operation if a hardware failure occurs on the active

management module

■ Minimizing restart time because of failure on a management module

■ Hotswapping a failed management module with no downtime

■ Allowing a faster software upgrade process (less downtime) when updat-

ing software versions

Note The fabric modules are resilient to each other; you need both modules enabled

for 100% performance. With one module enabled you will have 50%

performance, but most networks operate at less than 50% utilization. The

modules can be individually enabled or disabled. See “Enabling and Disabling

Fabric Modules” on page 15-12.

Terminology

Redundant management uses the following terminology.

Active Management Module. A management module that booted

successfully and is actively managing the switch.

Standby Management Module. A management module that is ready to

become the active management module if the active management module

fails.

Failed Management Module. A management module that did not pass

selftest or did not boot properly and is not in standby mode.

Offline Management Module. A management module that is offline

because redundancy is disabled.

15-3

HP ProCurve Management And Configuration Guide

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