You must explicitly make an IPQoS configuration persistent across reboots. Otherwise, the current configuration applies only until the system reboots. When IPQoS works correctly on a system, do the following to make the configuration persistent across reboots.
Assume the Primary Administrator role, or become superuser, on the IPQoS-enabled system.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, Working With the Solaris Management Console (Tasks), in System Administration Guide: Basic Administration.
# ipqosconf -l
If a configuration already exists, ipqosconf displays the configuration on the screen. If you do not receive output, apply the configuration, as explained in How to Apply a New Configuration to the IPQoS Kernel Modules.
# /usr/sbin/ipqosconf -c
The -c option causes the current IPQoS configuration to be represented in the boot-time configuration file /etc/inet/ipqosinit.conf.