15.2.1 Default Hierarchical Setting

The default hierarchical node-id consists of 3 levels with (9 11 11) bits in the three levels. The hierarchical configuration may be invoked as follows:

$ns set-address-format hierarchical

This sets :

* 31 bits for port-id, * 31 bits for node-id assigned in - 3 levels of hierarchy - (9 11 11) bits for the three levels. - or (8 11 11) if multicast is enabled.