Cisco Nexus 5000 Series Switch Fabric Manager Software Configuration Guide, NX-OS 4.0 (OL-16598-01, June 2008)

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Nexus 5000 Series Switch Fabric Manager Software Configuration Guide
OL-16598-01
Chapter 17 Distributing Device Alias Services
Device Alias Databases
• If two fabrics running in different device alias modes are joined together, the device alias merge will
fail. There is no automatic conversion to one mode or the other during the merge process. In this
situation, you must to select one mode over the other.
• Before changing from enhanced to basic mode, you must first explicitly remove all native device
alias-based configurations from both local and remote switches, or, replace all device alias-based
configuration members with the corresponding pWWN.
• If you remove a device alias from the device alias database, all applications will automatically stop
enforcing the corresponding device alias. If that corresponding device alias is part of an active
zoneset, all the traffic to and from that pWWN is disrupted.
• Renaming the device alias not only changes the device alias name in the device alias database, but
also replaces the corresponding device alias configuration in all the applications.
• When a new device alias is added to the device alias database, and the application configuration is
present on that device alias, it automatically takes effect. For example, if the corresponding device
alias is part of the active zoneset and the device is online, then zoning is enforced automatically. You
do not have to reactivate the zoneset.
• If a device alias name is mapped to a new HBA’s pWWN, then the application’s enforcement
changes accordingly. In this case, the zone server automatically enforces zoning based on the new
HBA’s pWWN.
Configuring Device Alias Modes
To configure device aliases to operate in enhanced mode using Fabric Manager, perform this task:
Step 1 Expand End Devices, and then choose Device Alias in the Physical Attributes pane.
You see the device alias configuration in the Information pane as shown in Figure 17-1.
Step 2 Click the Mode tab.
Step 3 Choose enhanced from the ConfigMode drop-down list.
Figure 17-1 Configuring Modes
Step 4 Click Apply Changes to commit and distribute these changes, or click Undo Changes to discard any
unsaved changes.