The protocol priorities (assigned by system administrator) are loaded by DPI from the file /etc/dpi/protocols.dscp.

This file is created in two steps: first one creates a text file with the list of protocols and their priorities. Second, it is converted into an internal format by a special utility.

To apply the changes you need to the DPI configuration with the following command:

service fastdpi reload

Each line contains the protocol name, then space, then dscp value. For example:

dns         0x3F
skype       drop
compressnet 010
ftp         keep
http        cs0
default     keep

Keywords meaning:

• drop - indicates that packets must not be transmitted further. They must be dropped.
• keep - shows that priority must keep its current value (typically 0).
• default - means “for all remaining protocols” and allows to simplify significantly making the configuration file.

cat my_dscp.txt|lst2dscp protocols.dscp

To move the settings into the work directory:

mv protocols.dscp  /etc/dpi/protocols.dscp