Enabling Autolearning - Cisco MDS 9000 Series Configuration Manual

Creating Dynamic VSANs
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
• If the same device logs multiple times into the switch through different ports, then the VSAN corresponding
• Learned entries do not override previously configured and activated entries.
• Learning is a two-part process—Enabling autolearning followed by disabling autolearning. When the

Enabling Autolearning

To enable autolearning, follow these steps:
Step 1 switch# config t
switch(config)#
Enters configuration mode.
Step 2
switch(config)# dpvm auto-learn
Enables learning on this switch.
Step 3 switch(config)# no dpvm auto-learn
Disables (default) learning on this switch.
Step 4 switch(config)# clear dpvm auto-learn
Clears the list of auto-learned entries.
Step 5
switch(config)# clear dpvm auto-learn pwwn pwwn
Clears the list of auto-learned pWWN entries in the distributed DPVM database.
database.
to last login is remembered.
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.
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
Enabling Autolearning
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