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  • 1.  QFX5K Packet Buffer Architecture [Tech post]

    Posted 07-19-2023 16:41
    Edited by spuluka 10-10-2023 05:39

    Overview

    On QFX5K platforms all packets which enters ingress pipeline will be stored at central MMU packet buffers before it egress. Packet buffers are required for burst absorption, packet replication and for multiple other use cases. Without packet buffers bursty traffic will get tail dropped and leads to poor network performance.  Excess burst might be received on egress port under below scenarios.

    ·      Multiple ingress ports sending traffic to single egress port.

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