Brocade FastIron X Series Chassis Hardware Installation Guide
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Chapter
5
Using a Redundant Management Module
Overview
NOTE
This chapter applies to the
FSX 800
and
FSX 1600
chassis devices only.
You can install a redundant management module in the
FSX 800
and
FSX 1600
chassis. By
default, the system considers the module installed in the lower-numbered slot to be the active
management module, and the module installed in the higher-numbered slot to be the redundant or
standby module. If the active module becomes unavailable, the standby module automatically
takes over management of the system.
This chapter describes the redundant management module, how it works with the active module,
and how to configure and manage it.
This chapter provides the following information:
•
How management module redundancy works
•
Optional management module redundancy configurations that you can perform
•
Hitless management features (hitless Layer 2 switchover and hitless Layer 2 OS upgrade)
•
How to manage and monitor the redundancy feature
How Management module redundancy works
This section explains the following:
•
How management module redundancy works under normal operating conditions.
•
Events that cause a standby management module to assume the role of the active module and
how the switchover occurs as a result of each event.
•
Implications that you should be aware of if a switchover occurs.
Management module redundancy overview
When you power on or reload a
FSX 800
or
FSX 1600
chassis with two management modules
installed, by default, the management module installed in the lower-numbered slot becomes the
active module and the management module in the higher-numbered slot becomes the standby
module. (You can change the default active slot using the set-active-mgmt command. For
information about performing this task, refer to
“Changing the default active chassis slot”
After the active and standby modules are determined, both modules boot from the source specified
for the active module. The active management module boots from the active management
module’s flash memory.
