This read-only object identifies the type of traffic this rate-limit entry is rate-limited against. It determines whether this entry's traffic classification matches, say, all traffic on an interface, a particular precedence value, or traffic matching an access list, a distinction that matters a great deal when interpreting whether the CAR statistics counters elsewhere in this table represent all interface traffic or only a specific subset. Two entries on the same interface with different values here, one rate-limiting all traffic and another specifically rate-limiting traffic matching a particular access list, would report entirely different subsets of traffic in their respective statistics.