S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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
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:
switch# config t
switch(config)# dpvm activate
switch(config)# no dpvm activate
switch(config)# dpvm activate force
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.
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:
Cisco MDS 9000 Family CLI Configuration Guide
If a device logs out while autolearn is enabled, that entry is automatically deleted from the active
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.
Enters configuration mode.
Activates the DPVM config database.
Deactivates the currently active DPVM database.
Forcefully activates the DPVM config database to
override conflicting entries.
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Creating Dynamic VSANs