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Chapter 17
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)# dpvm enable
switch(config)# no dpvm enable
About DPVM Databases
The DPVM database consists of a series of device mapping entries. Each entry consists of a device
pWWN/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.
•
•
•
Changes to the config database are not reflected in the active database until you activate the config
database. Changes to the pending database are not reflected in the config/active database until you
commit the pending database. This database structure allows you to create multiple entries, review
changes, and let the config and pending databases take effect.
Configuring Config and Pending Databases
To create and populate the config and pending databases, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# dpvm database
switch(config-dpvm-db)#
switch(config)# no dpvm database
Step 3
switch(config-dpvm-db)# pwwn
12:33:56:78:90:12:34:56 vsan 100
switch(config-dpvm-db)# no pwwn
12:33:56:78:90:12:34:56 vsan 101
Step 4
switch(config-dpvm-db)# nwwn
14:21:30:12:63:39:72:81 vsan 101
switch(config-dpvm-db)# no nwwn
14:21:30:12:63:39:72:80 vsan 101
OL-6973-03, Cisco MDS SAN-OS Release 2.x
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 pending database when distribution
is enabled (see the
"Configuring DPVM Database Distribution" section on page
Purpose
Enters configuration mode.
Enables DPVM on that switch.
Disables (default) DPVM on that switch.
Purpose
Enters configuration mode.
Creates the config database.
Deletes the config database.
Maps the specified device pWWN to VSAN 100.
Removes the specified device pWWN mapping from
the config database.
Maps the specified device nWWN to VSAN 101.
Removes the specified device nWWN mapping from
the config database.
Cisco MDS 9000 Family Configuration Guide
About DPVM Databases
17-5).
17-3
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