The 7210 SAS supports the following meter modes:
srTCM - Single Rate Three Color Marking
trTCM - Two Rate Three Color Marking
For srTCM, the CBS and MBS Token buckets are replenished at a single rate, that is CIR; however, for trTCM CBS and MBS buckets are individually replenished at CIR and PIR rates, respectively. In trTCM1, the policing algorithm is implemented as defined in RFC 4115.