Apparatus and method for enabling intserv quality of service using diffserv building blocks

A computer readable storage medium including program instructions that direct a computer to perform one or more operations when executed by a processor, the program instructions comprising:

• identifying, from an incoming traffic stream, packets belonging to one of a plurality of flows receiving a contracted quality of service (QoS);
• determining, for each identified packet, whether the respective, identified packet conforms to a predetermined traffic specification for a respective flow to which the respective packet belongs;
• assigning each conforming packet to a queue from one or more available according to a predetermined burst level of a respective flow to which the respective conforming packet belongs;
• and
• selecting packets from each queue for transmission in order to maintain conformance of each selected packet to the predetermined packet traffic specification for a respective flow to which the respective, selected packet belongs.

The computer readable storage medium of clam 11, wherein assigning further comprises:

• selecting a non-conforming packet;
• assigning the selected packet to a non-conforming queue;
• and
• repeating the selecting and assigning for each non-conforming packet.

A method comprising:

• identifying, from an incoming traffic stream, packets belonging to one of a plurality of flows receiving a contracted quality of service (QoS);
• determining, for each identified packet, whether the respective, identified packet conforms to one of a predetermined traffic specification for a respective flow to which the respective packet belongs and a modified traffic specification according to a predetermined network path delay;
• assigning each conforming packet to a conforming traffic queue;
• and
• assigning non-conforming packets to one of a non-conforming traffic queue and an absolute dropper according to the predetermined traffic specification for a respective flow to which the respective packet belongs

An apparatus, comprising:

• an input classifier to route incoming packets belonging to one of a plurality of flows receiving contacted quality of service (QoS);
• a plurality of meters, each respective meter to receive packets routed from the input classifier belonging to a flow assigned to the respective meter and determine whether the received packets conform to a traffic specification of the respective flow assigned to the respective meter;
• one or more queues to receive conforming packets from the plurality of meters;
• and
• a scheduler to service packets from the one or more queues.