User guide
5-2 E
XTREME
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NTERPRISE
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ANAGER
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WITCH
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TATUS
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NFORMATION
The ExtremeWare Enterprise Manager retrieves information about the switches it
manages in several ways:
• When a switch is added to the ExtremeWare Enterprise Manager database, the
Enterprise Manager uses SNMP to retrieve status information needed by the various
Enterprise Manager applets.
• Summit switches send SmartTraps to the Enterprise Manager whenever a change
occurs in a switch status variable that the Enterprise Manager has registered interest
in. These include changes to operating variables as well as configuration changes
made through other management entities such as the switch command line interface
or ExtremeWare Vista.
These traps are based on a set of SmartTraps rules that the Inventory Manager
creates on the switch when it is added to the switch inventory. The rules tell the
switch what events or changes the Enterprise Manager wants to be notified about.
The rules are created on the switch using SNMP. The Enterprise Manager also adds
itself on the switch as a trap receiver. The switch uses the SmartTraps rules to
determine what traps to send to the Enterprise Manager.
When the Enterprise Manager receives a trap from a switch, it then polls the switch
for detailed status information.
• The Enterprise Manager polls every switch periodically (approximately every five
minutes by default) to update basic switch status, a subset of the status and
configuration information kept in the database.
• A user with Administrator or Manager access can use the Sync command from the
Inventory Manager. Sync is a manual override of the regular data gathering
mechanisms for use when the users feels that the switch configuration or status is
not correctly reported in the Enterprise Manager applets. Sync causes the Enterprise
Manager to poll the switch and update all configuration and status information.
During a Sync operation the SmartTraps rules are also reset in case the user has
accidently deleted the trap receiver or any SmartTrap rules.