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Configuration Guide - Low Latency Network

CloudEngine 8800, 7800, 6800, and 5800 V200R005C00

This document describes the configurations of Buffer optimization of lossless queues, Fast ECN, Fast CNP, Dynamic ECN threshold of lossless queues, and Dynamic load balancing.
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Maintaining Buffer Optimization of Lossless Queues

Maintaining Buffer Optimization of Lossless Queues

Context

You can maintain buffer optimization of lossless queues to monitor the buffer usage of lossless queues.

Before re-collecting the buffer usage of lossless queues in a given period of time, clear the existing buffer usage of lossless queues.

The cleared statistics cannot be restored.

Procedure

  • Run the display qos headroom-usage [ slot slot-id | interface interface-type interface-number ] command in the user view to check the headroom buffer usage of the device or interface.
  • Run the reset qos headroom-usage [ slot slot-id | interface interface-type interface-number ] command in the user view to clear the headroom buffer usage of the device.
  • Run the display qos queue statistics { slot slot-id | interface interface-type interface-number [ verbose ] | multicast { slot slot-id | interface interface-type interface-number } } command in the user view to check queue-based traffic statistics on an interface.

    NOTE:

    Only the CE6870EI and CE6875EI support the verbose parameter.

    The CE6880EI does not support the multicast parameter.

  • Run the reset qos queue statistics { interface interface-type interface-number | slot slot-id } command in the user view to clear queue-based traffic statistics.
  • Run the display qos buffer ingress-statistics [ interface interface-type interface-number ] command in the user view to check packet statistics on an interface in the inbound direction.
  • Run the reset qos buffer ingress-statistics [ interface interface-type interface-number ] command in the user view to clear packet statistics on an interface in the inbound direction.
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Updated: 2019-04-20

Document ID: EDOC1100040243

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