About Dpvm Databases; Configuring Dpvm Config And Pending Databases - 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
To enable DPVM on any participating switch, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# feature dpvm
switch(config)# no feature dpvm
Note

About DPVM Databases

The DPVM database consists of a series of device mapping entries. Each entry consists of a device
pWWN or nWWN assignment along with the dynamic VSAN to be assigned. You can configure a
maximum of 16,000 DPVM entries in the DPVM database. This database is global to the whole switch
(and fabric) and is not maintained for each VSAN.
The DPVM feature uses three databases to accept and implement configurations.
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•
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Changes to the DPVM config database are not reflected in the active DPVM database until you activate
the DPVM config database. Changes to the DPVM pending database are not reflected in the config or
active DPVM database until you commit the DPVM pending database. This database structure allows
you to create multiple entries, review changes, and let the DPVM config and pending databases take
effect.

Configuring DPVM Config and Pending Databases

To create and populate the DPVM config and pending databases, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# device-alias mode
enhanced
switch(config)# device-alias commit
Step 3
switch(config)# dpvm database
switch(config-dpvm-db)#
switch(config)# no dpvm database
OL-18084-01, Cisco MDS NX-OS Release 4.x
To overwrite the login information with the duplicate pWWN login, enter the dpvm
overwrite-duplicate-pwwn command.
Configuration (config) database—All configuration changes are stored in the configuration database
when distribution is disabled.
Active database—The database currently enforced by the fabric.
Pending database—All configuration changes are stored in the DPVM pending database when
distribution is enabled (see the
Purpose
Enters configuration mode.
Enables DPVM on that switch.
Disables (default) DPVM on that switch.
"DPVM Database Distribution" section on page
Purpose
Enters configuration mode.
Enables enhanced device alias mode. This is required
for device-alias configuration in the DPVM database.
Creates the DPVM config database.
Deletes the DPVM config database.
Cisco MDS 9000 Family CLI Configuration Guide
DPVM
22-6).
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