How to apply another tariff plan to a set of subscribers?

If you have used a named profile to set a tariff plan, it's enough to change the tariff plan settings in this profile and they will be automatically applied to all subscribers within the given tariff plan name

fdpi_ctrl load profile --policing rate_10_night.cfg --profile.name tariff_plan_10

In case of anonymous policing profiles (without a name) you have to change the tariff plan as follows, an example for rate10.cfg bp discussed in Managing the subscriber's bandwidth accortding to the tariff plan:

fdpi_ctrl list all --policing | grep 'rrate=1250000(10.00mbit)' | awk '{ print $1}'>ll.tmp; fdpi_ctrl load --policing policing.htb.cng --file ll.tmp;

or in case you have previously prepared list:

fdpi_ctrl load --policing policing.htb.cng --file my_rate10_ip.lst

here my_rate10_ip.lst file contains the list of IPs, such as follows:

# cat my_rate10_ip.lst
10.64.66.110
10.64.66.112
10.64.66.114