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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.
When the system is powered on or otherwise reset normally, the system sends a
cold start message and trap. However, if the system is reset as the result of
switchover to the standby management module, the system instead sends a warm
start message and trap.
MAC address changes
The MAC addresses in the system are based on the MAC address of the chassis.
During switchover, the system's MAC addresses do not change.
Management module redundancy configuration
Configuring management module redundancy consists of performing one optional
task (changing the default active chassis slot). The section explains how to perform
this task.
Changing the default active chassis slot
By default, the system considers the module installed in the lower-numbered slot to
be the active management module. If desired, you can change the default active
chassis slot to the higher-numbered slot.
To change the default active chassis slot, enter commands such as the following:
# config t
(config)# set-active-mgmt mgmt1
Syntax: [no] set-active-mgmt mgmt0 | mgmt1
mgmt0 is the lower-numbered slot and mgmt1 is the higher-numbered slot.
To remove the configuration, use the no form of the command. You cannot use the
erase startup command to remove the configuration.
To view the default active chassis slot currently configured on the device, use the
show run command.
Managing management module redundancy
The B08S and B16S support the following management tasks related to
management module redundancy:
v Perform immediate synchronization of files
v Perform a manual switchover to the standby module
v Reboot the standby module
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Ethernet Switch s-series Installation and User Guide
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