Low pass filter for hierarchical pipelined distributed scheduling traffic manager

A network element implementing a scalable hierarchical traffic management (HTM) over a plurality of network layers for a network, the network element comprising:

• a set of ports to receive a plurality of data packets to be forwarded by the network element and to forward the plurality of data packets to a set of queues;
• and
• a network processor coupled to the set of ports, the network processor to execute the scalable HTM,
• the scalable HTM configured to execute a quick loopback batch scheduler and a straight priority arbiter, the scalable HTM including a per priority first-in-first-out buffer and a mixed priority buffer,
• the quick loopback batch scheduler configured to process the plurality of data packets to select a first data packet of the plurality of data packets to forward by applying priority rules for a subset of the plurality of network layers and to placing the first data packet in the per priority FIFO buffer that organizes data packets primarily by priority and secondarily by order of arrival,
• the straight priority arbiter to select a second data packet of the plurality of data packets from the per priority FIFO buffer that has a first arrival for a highest priority in the per priority FIFO buffer such that each priority has a defined throughput and to place the second data packet in a mixed-priority FIFO buffer to be forwarded toward a destination of the second data packet, and
• the mixed priority FIFO buffer to return a per priority flow control value from the mixed-priority FIFO buffer to the per priority FIFO buffer to limit data packets having a low priority being selected by the straight priority arbiter and to forward data packets from the mixed-priority FIFO toward a respective destination through a rate limiter.