Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 442
Admin Domain compatibility, availability, and merging
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17 Admin Domain management for physical fabric administrators Admin Domain compatibility, availability, and merging Admin Domains maintain continuity of service for Fabric OS features and operate in mixed-release Fabric OS environments. High availability is supported with some backward compatibility. When an E_Port comes online, the adjacent switches merge their AD databases. The receiving switch accepts an AD database from the neighboring switch only if the local AD database is empty or if the new AD database exactly matches both the defined and effective configurations of the local AD database. If the AD database merge fails, the E_Port is segmented with an "AD conflict" error code. Admin Domain management for physical fabric administrators NOTE This section is for physical fabric administrators who are managing Admin Domains. The ad command follows a batched-transaction model, which means that changes to the Admin Domain configuration occur in the transaction buffer. An Admin Domain configuration can exist in several places: • Effective configuration - The Admin Domain configuration that is currently in effect. • Defined configuration - The Admin Domain configuration that is saved in flash memory. There might be differences between the effective configuration and the defined configuration. • Transaction buffer - The Admin Domain configuration that is in the current transaction buffer and has not yet been saved or canceled. How you end the transaction determines the disposition of the Admin Domain configuration in the transaction buffer. The following commands end the Admin Domain transaction: ad --save Saves the changes in the transaction buffer to the defined configuration in persistent storage and propagates the defined configuration to all switches in the fabric. Note that for delete and clear operations, if one or more of the deleted Admin Domains are in the effective configuration, you cannot use --save, but must use --apply instead. ad --apply Saves the changes to the defined configuration in persistent storage and enforces the defined configuration on all switches in the fabric, replacing the effective configuration. ad --transabort Aborts the transaction and clears the transaction buffer. The effective and defined configurations remain unchanged. You can enter the ad --transshow command at any time to display the ID of the current Admin Domain transaction. 442 Fabric OS Administrator's Guide 53-1002745-02
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