Using the dladm command to customize common datalink properties provides the following benefits:
The dladm command is the only command interface that is required for configuring network driver properties. This command replaces the former practice of using a combination of the ndd command and driver.conf file modifications to set driver properties.
The following uniform syntax is used, regardless of which properties are set:
dladm subcommand properties datalink
Use of the dladm command applies to both public and private properties of the driver.
Using the dladm command on a specific driver does not disrupt network connections of other NICs of similar types. Thus, you can configure datalink properties dynamically.
Datalink configuration values are stored in a dladm repository and persist over system reboots.