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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 the "Manually switching over to the standby management module"section.
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.
Management sessions
You can establish management sessions with the active management module's management port. If a switchover occurs, the
management port on the original active module shuts down and all open CLI, Web Management Interface, and Brocade Network
Advisor sessions with that port close. You can open new sessions with the new active module, provided that the new active module has
the same management port connections. (For example, if you were accessing the Web Management Interface through a PC connected
to the original active module's management port, you can open a new session if a PC is connected to the new active module's
management port.)
In the scenario described above, you can open a new session using the same IP address you were using before the switchover. (You
configure an IP address for the active module only; if a switchover occurs, the IP address is used by the new active module.)
Syslog and SNMP traps
When a switchover occurs, the system sends a Syslog message to the local Syslog buffer and also to the Syslog server, if you have
configured the system to use one. In addition, if you have configured an SNMP trap receiver, the system sends an SNMP trap to the
receiver.
Brocade FastIron SX Series Chassis Hardware Installation Guide
Part Number: 53-1003613-04
How Management module redundancy works
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