The Root Class and the Default Class

The root class is a special class that is created automatically by the Solaris Bandwidth Manager policy agent. You cannot explicitly assign guaranteed bandwidth to the root class: if the total bandwidth allocated to other classes is less than 100%, the difference is allocated to the root class and is available for borrowing and for use by traffic not allocated to any other class.

The default class is an optional special class. Any packet that the classifier does not allocate to a specific class is put in the default class. The scheduler treats the default class in exactly the same way as any other class.

If you do not define a default class, any packet that the classifier does not allocate to a specific class is put in the root class.