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由于交换机端 sfp 故障,在单个 NIC 端口上接收到 CRC 错误

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ontap-9
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适用于

  • ONTAP 9
  • FAS / AFF 系统
  • 在单个端口上报告 CRC 错误

问题描述

  • Event 记录物理和/或逻辑端口上的硬件错误。

[node-01: vifmgr: vifmgr.cluscheck.crcerrors]: Port a0b on node node-01 is reporting a high number of observed hardware errors, possibly CRC errors
[node-02: vifmgr: vifmgr.cluscheck.crcerrors]: Port e0d on node node-02 is reporting a high number of observed hardware errors, possibly CRC errors
[node-02: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e0d on node node-02 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped)
[node-02: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: CRC Errors Detected - High CRC errors detected on port e0d node node-02

  • ifstat output show CRC 如果 ONTAP 接收到错误。

RECEIVE
 Total frames:   36418m  | Frames/second:   23646  | Total bytes:       179t
 Bytes/second:      116m | Total errors:      170k | Errors/minute:    7
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:  1686k
 Non-primary u/c:     0  | CRC errors:       159k | Long frames:      0

 

  • CRC错误可能会在交换机端口或客户端上观察到,并且由于数据包丢失可能会出现延迟

2022-03-20T17:39:36.443Z cpu36:2098075)WARNING: ScsiDeviceIO: 1498: Device naa.600a09803830574c4d5d53ddf26c4543 performance has deteriorated. I/O latency increased from average value of 18171 microseconds to 1816780 microseconds.

 

  • 在 NetApp 端运行 ifstat -z 以清除受影响节点上的统计信息,并检查是否存在递增错误。

 

  • 可按照以下步骤进一步隔离此问题:
    • CRC 错误表示介质出现问题(例如电缆和 SFP 安装不良、损坏)
    • 执行端口隔离测试,以确保端口处于良好状态。
    • 验证端口报告错误与链路中下一个设备之间连接的运行状况。
    • 尝试重新拔插电缆的两端。
    • 切换端口以确定问题是否已解决
    • 重新拔插两端的 SFP(一次一个)。
    • 更换连接电缆。
    • 如果更换 SFP 或电缆后未解决问题,请继续解决方案。

 

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