Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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39-3
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 39 Distributing Device Alias Services
Device Alias Databases
• Pending database—Your subsequent device alias configuration changes are stored in the pending
database.
If you modify the device alias configuration, you need to commit or discard the changes as the fabric
remains locked during this period.
Device alias database changes are validated with the applications. If any of the applications cannot
accept the device alias database changes, then those changes are rejected; this applies to device alias
database changes resulting from either a commit or merge operation.
This section includes the following topics:
• Creating Device Aliases, page 39-3
• Device Alias Modes, page 39-4
• Changing Device Alias Mode Guidelines, page 39-4
• Configuring Device Alias Modes, page 39-5
• About Device Alias Distribution, page 39-5
• Locking the Fabric, page 39-5
• Committing Changes, page 39-6
• Discarding Changes, page 39-6
• Fabric Lock Override, page 39-7
• Disabling and Enabling Device Alias Distribution, page 39-7
Creating Device Aliases
To a create a device alias in the pending database, perform this task:
To display the device alias configuration, use the show device-alias name command:
switch# show device-alias name x
device-alias name x pwwn 21:01:00:e0:8b:2e:80:93
Command Purpose
Step 1
switch# configuration terminal
Enters configuration mode.
Step 2
switch(config)# device-alias database
Enters the pending database configuration submode.
Step 3
switch(config-device-alias-db)#
device-alias name device-name pwwn
pwwn-id
Specifies a device name for the device that is
identified by its pWWN. Starts writing to the pending
database and simultaneously locks the fabric as this is
the first-issued device alias configuration command.
switch(config-device-alias-db)# no
device-alias name device-name
Removes the device name for the device that is
identified by its pWWN.
switch(config-device-alias-db)#
device-alias rename old-device-name
new-device-name
Renames an existing device alias with a new name.