Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
 

Class of Service

  • Support for dynamic ECN (QFX5240-64OD and QFX5240-64QD)—QFX5240 switches support dynamic explicit congestion notification (ECN). Regular ECN sends an alert when a configured traffic threshold is exceeded and takes mitigating action based on the configured profile. Dynamic ECN automatically adjusts these threshold settings based on real-time conditions such as queue size and traffic patterns. This enhances responsiveness and management during periods of network congestion.

    [See CoS Explicit Congestion Notification and Example: Configuring Static and Dynamic ECN.]

  • Per-queue accounting of ECN packets (QFX5130-32CD, QFX5130E-32CD, QFX5130-48C, QFX5220, QFX5230-64CD, QFX5240-64OD, QFX5240-64QD, QFX5700, and QFX5700E)—Counters on explicit congestion notification (ECN)-enabled queues increment when the queues experience congestion or receive packets that encountered congestion on another device. You can view these per-queue ECN accounting statistics using the show interfaces queue command.

    [See CoS Explicit Congestion Notification and show interfaces queue.]

  • Support for PFC watchdog (QFX5230-64CD, QFX5240-64OD, and QFX5240-64QD)—Use the priority-based flow control (PFC) watchdog to PFC-enabled ports for pause frame storms and automatically resolve them. The watchdog detects the storms, mitigates the condition triggering the storm, and restores the network.

    [See PFC Watchdog.]