A class defines the packets in a sub-flow — the second stage of classification.
Classes are numbered
255. QoS determines the class in the first stage of classification where a set of packet matching rules decide which numbered class to assign a packet to.
You cannot configure a class with the value of
0 is the default class and uses the default profile — that is, class
0 is reserved for default traffic, such as traffic that does not fall into any other classes.
0and thus use the default profile.
QoS will try to match classes in numerical order, starting at class