The two rate three color meter shown in figure 2.5 is typically used for implementing the corresponding three color marker defined in [RFC2698].
trTCM uses the same parameters as DLB, namely:
| Parameter | Unit | Description |
| cbs | Bytes | Committed burst size |
| cir | bps | Committed information rate |
| mpu | Bytes | Minimum policed unit |
| pbs | Bytes | Peak burst size |
| pir | bps | Peak information rate |
Only mpu is optional, all other parameters are required.
The functions for testing a two rate three color meter are described in the previous section.