Enabling Autolearning; Clearing Learned Entries - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 22 Creating Dynamic VSANs
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
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:
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•
•
•

Enabling Autolearning

To enable autolearning, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# dpvm auto-learn
switch(config)# no dpvm auto-learn
switch(config)# clear dpvm auto-learn
switch(config)# clear dpvm auto-learn
pwwn pwwn

Clearing Learned Entries

You can clear DPVM entries from the active DPVM database (if autolearn is still enabled) using one of
two methods.
•
•
These two commands do not start a session and can only be issued in the local switch.
Note
OL-18084-01, Cisco MDS NX-OS Release 4.x
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.
–
To clear a single autolearn entry, use the clear dpvm auto-learn pwwn command.
switch# clear dpvm auto-learn pwwn 55:22:33:44:55:66:77:88
To clear all autolearn entries, use the clear dpvm auto-learn command.
switch# clear dpvm auto-learn
Purpose
Enters configuration mode.
Enables learning on this switch.
Disables (default) learning on this switch.
Clears the list of auto-learned entries.
Clears the list of auto-learned pWWN entries in the
distributed DPVM database.
Cisco MDS 9000 Family CLI Configuration Guide
DPVM
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