Brocade Communications Systems Brocade Superx Series Installation Guide download pdf (Page 109)

Brocade FastIron SX Series Chassis Hardware Installation Guide 97

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How Management module redundancy works

When the switchover occurs, the standby module becomes the active module.

Hitless switchover is also supported. For more information, refer to the FastIron Configuration

Guide.

Removal and replacement of a management module

For information about how to remove and replace a management module, refer to “Replacing a

management module” on page 106.

This section explains how management module redundancy is affected when you remove and

replace an active or standby management module.

Removal and replacement of an active management module

If you remove the active management module, the standby module automatically assumes the role

of the active module. After you insert a replacement module in the slot from which the original

active module was removed, the replacement module becomes the standby module. The module

boots from the source specified for the active module. The active management module boots from

the active management module’s flash memory.

NOTE

Before removing the active management module, Brocade recommends that you first issue the

command switch-over-active-role. For details, refer to “Manually switching over to the standby

management module” on page 100.

After the replacement module boots, the active module compares the standby module’s flash code

and system-config file to its own. If differences exist, the active module synchronizes the standby

module’s flash code and system-config file with its own.

Removal and replacement of a standby management module

You can remove a standby management module without causing a switchover to occur. The active

module continues to function as is. Communication between the active module and the removed

module stops until the new module is installed in the chassis. After the new module is installed, it

assumes the role of standby module. The module boots from the source specified for the active

module. The active management modules boot from the active management module’s flash

memory.

After the module boots, the active module compares the standby module’s flash code and

system-config file to its own. If differences exist, the active module synchronizes the standby

module’s flash code and system-config file with its own.

Switchover implications

After the role of the active management module switches from one module to another, you must be

aware of implications that affect the following areas:

• Management sessions

• Syslog and SNMP traps

• MAC addresses

The following sections explain the implications for these areas.

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Brocade Communications Systems Brocade Superx Series Installation Guide Page 109