HP Cisco MDS 9120 Cisco MDS 9000 Family CLI Configuration Guide, Release 3.x ( - Page 512

DPVM Chapter 21 Creating Dynamic VSANs Send documentation comments to [email protected] Activating DPVM Config Databases When you explicitly activate the DPVM config database, the DPVM config database becomes the active DPVM database. Activation may fail if conflicting entries are found between the DPVM config database and the currently active DPVM database. However, you can force activation to override conflicting entries. To disable DPVM, you must explicitly deactivate the currently active DPVM database by issuing the no dpvm activate command. To activate the DPVM config database, follow these steps: Step 1 Step 2 Command switch# config t switch(config)# switch(config)# dpvm activate switch(config)# no dpvm activate switch(config)# dpvm activate force Purpose Enters configuration mode. Activates the DPVM config database. Deactivates the currently active DPVM database. Forcefully activates the DPVM config database to override conflicting entries. About Autolearned Entries The DPVM database can be configured to automatically learn (autolearn) about new devices within each VSAN. The autolearn feature can be enabled or disabled at any time. Learned entries are created by populating device pWWNs and VSANs in the active DPVM database. The active DPVM database should already be available to enable autolearn. You can delete any learned entry from the active DPVM database when you enable autolearn. These entries only become permanent in the active DPVM database when you disable autolearn. Note Autolearning is only supported for devices connected to F ports. Devices connected to FL ports are not entered into the DPVM database because DPVM is not supported on FL ports. The following conditions apply to learned entries: • If a device logs out while autolearn is enabled, that entry is automatically deleted from the active DPVM database. • If the same device logs multiple times into the switch through different ports, then the VSAN corresponding to last login is remembered. • Learned entries do not override previously configured and activated entries. • Learning is a two-part process-enabling autolearning followed by disabling autolearning.When the auto-learn option is enabled, the following applies: - Learning currently logged-in devices-occurs from the time learning is enabled. - Learning new device logins- occurs as and when new devices log in to the switch. 21-4 Cisco MDS 9000 Family CLI Configuration Guide OL-16184-01, Cisco MDS SAN-OS Release 3.x