Lightweight Fair Queueing

Document Type Expired Internet-Draft (individual)
Authors Jonathan Morton  , Peter Heist 
Last updated 2020-01-03 (latest revision 2019-07-02)
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This note presents Lightweight Fair Queueing (LFQ), a fair queueing algorithm with a small code footprint, low memory requirements, no multiply operations, only two physical queues, and only one set of AQM state. LFQ provides throughput fairness, sparse flow prioritization and ordering guarantees, making it suitable for a mixture of traffic flow types.


Jonathan Morton (
Peter Heist (

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