Cisco Nexus 5000 Series - Device Alias Databases; Creating Device Aliases

Send feedback to nx5000-docfeedback@cisco.com
1-3
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 1 Distributing Device Alias Services
Device Alias Databases
Device Alias Databases
The device alias feature uses two databases to accept and implement device alias configurations.
• Effective database—The database currently used by the fabric.
• 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 1-3
• Device Alias Modes, page 1-4
• Changing Device Alias Mode Guidelines, page 1-4
• Configuring Device Alias Modes, page 1-5
• About Device Alias Distribution, page 1-5
• Locking the Fabric, page 1-6
• Committing Changes, page 1-6
• Discarding Changes, page 1-6
• Fabric Lock Override, page 1-7
• Disabling and Enabling Device Alias Distribution, page 1-7
Creating Device Aliases
To a create a device alias in the pending database, perform this task:
Command Purpose
Step 1
switch# configuration terminal
switch(config)#
Enters configuration mode.
Step 2
switch(config)# device-alias database
switch(config-device-alias-db)#
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.