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About Autolearned Entries
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 Config Databases
When you explicitly activate the config database, the config database becomes the active database.
Activation may fail if conflicting entries are found between the config database and the currently active
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:
Command
Step 1
switch# config t
switch(config)#
Step 2
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 DPVM active database. The DPVM active database should
already be available to enable the autolearn feature.
You can delete any learned entry from the DPVM active database when you enable the autolearn feature.
These entries only become permanent in the active database when you disable the autolearn feature.
Autolearning is only supported for devices connected to F ports. Devices connected to FL ports are not
Note
entered into the DPVM database because DPVM is not supported on FL ports.
The following conditions apply to learned entries:
•
•
•
•
Cisco MDS 9000 Family Configuration Guide
17-4
If a device logs out while autolearn is enabled, that entry is automatically deleted from the DPVM
active 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.
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Chapter 17
Purpose
Enters configuration mode.
Activates the config database.
Deactivates the currently active database.
Forcefully activates the config database to override
conflicting entries.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Creating Dynamic VSANs
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