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在 Cisco 3232C 上添加 A90 节点后出现高延迟

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适用于

  • AFF A90(e1a/e7a 上默认启用 PFC)
  • Cisco Nexus 3232C 带 RCF v1.13
  • 繁重 FlexGroup 工作负载

问题描述

  • 将新的 A90 节点连接到集群交换机后,集群互连延迟峰值为每次操作数秒。
  • 重新启动交换机和节点无济于事。
  • 在连接到 A90 节点的交换机端口上禁用优先级流量控制 (PFC) 会立即恢复正常延迟。

注意

  • A90 使用 PFC。这个问题并不总是会发生;在繁重的工作量下更有可能发生

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