Terms and Acronyms

classifier—A method of reading a sequence of bits in a packet header or label and determining the packet’s forwarding class.
class of service—A set of forwarding class parameters that define different treatment for different traffic flows.
Differentiated Services (DiffServ)—A standards-based method of associating CoS parameters with traffic flows and their forwarding classes.
Differentiated Services code point (DSCP)—Values for a 6-bit field defined for IPv4 and IPv6 packet headers that can be used to enforce CoS distinctions in routers.