N o t e

Redundancy (Switches 8200zl)

Overview

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

The fabric modules are also redundant and can be 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 and is not in standby mode.

Offline Management Module. A management module that is offline because redundancy is disabled.

Primary Image. The software version stored in primary flash on each management module.

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