Two-rate tricolor marking (TCM)

Enables you to configure two-rate tricolor marking (two-rate TCM) as defined in RFC 2698, A Two Rate Three Color Marker. TCM extends the functionality of CoS traffic policing by providing three levels of drop priority instead of two. With this capability, you can provision more granular service-level agreements (SLAs) across the Differentiated Services (DiffServ) domain. You configure TCM by defining TCM policers, and three levels of packet loss priority (PLP) for classifiers, rewrite rules, random early discard (RED) drop profiles, and firewall filters. The color of a packet, as used or set by a TCM policer, corresponds to the packet's drop precedence (loss priority or PLP).