VxRail:網路 NIC 統計資料中出現高 vSAN 延遲和 CRC 錯誤
Summary: 多個主機出現高 CRC 錯誤,導致 vSAN 延遲。
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Symptoms
- 從 叢集 >監控>vSAN 健全狀況:MTU 檢查 (以大型封包執行 ping):請參閱文章 VxRail:MTU 檢查 (以大型封包執行 ping)
- 主機大型 ping 測試 (MTU 檢查) 間歇性失敗
- 在 vSAN 上出現高 CRC 錯誤
vmnics統計計數器
esxcli network nic stats get -n vmnic1 host1 NIC statistics for vmnic1: Receive packets dropped: 0 Transmit packets dropped: 0 Total receive errors: 216001 Receive length errors: 0 Receive over errors: 0 Receive CRC errors: 216001 Receive frame errors: 0 host2 NIC statistics for vmnic1: Receive packets dropped: 0 Transmit packets dropped: 0 Total receive errors: 283604 Receive length errors: 0 Receive over errors: 0 Receive CRC errors: 283604 Receive frame errors: 0 host3 NIC statistics for vmnic1: Receive packets dropped: 0 Transmit packets dropped: 0 Total receive errors: 0 Receive length errors: 0 Receive over errors: 0 Receive CRC errors: 0 Receive frame errors: 0 host4 NIC statistics for vmnic1: Receive packets dropped: 0 Transmit packets dropped: 0 Total receive errors: 170796 Receive length errors: 0 Receive over errors: 0 Receive CRC errors: 170796
Cause
高 CRC 錯誤是第 1 層問題的症狀。可能是纜線、SFP 或網路介面卡 (NIC) 故障。
上述統計資料表示主機 1、主機 2 和主機 4 正在收到來自主機 3 的 CRC (入站),而 host3 可能是導致 vSAN 效能問題的 CRC 錯誤來源。
Resolution
- 若要查看 CRC 錯誤增量,請執行命令:
watch esxcli network nic stats get -n=vmnic1 | grep "Receive CRC errors"
- 關閉 vmnic1 的上行鏈路:
esxcli network nic down -n vmnic1
注意:在將連結狀態變更為關閉狀態之前,請確定具備上行鏈路備援 (例如 vmnic0、vmnic1)。此時,您應該不會看到 CRC 錯誤增加,也沒有 vSAN 延遲。
- 更換連接至 vSAN uplink1 的 SFP,並將上行鏈路狀態變更為線上。此外,如果更換 SFP 無法停止 CRC 發生錯誤,請考慮更換上行鏈路的纜線。
Affected Products
VMWare Cloud on Dell EMC VxRail E560F, VMWare Cloud on Dell EMC VxRail E560N, VxRail 460 and 470 Nodes, VxRail Appliance Family, VxRail Appliance Series, VxRail G Series Nodes, VxRail E Series Nodes, VxRail E560 VCF, VxRail E560F VCF
, VxRail E560N VCF
...
Products
VxRail E560, VxRail E560F, VxRail E560N, VxRail E660, VxRail E660F, VxRail E660N, VxRail E665, VxRail E665F, VxRail E665N, VxRail G560, VxRail G560 VCF, VxRail G560F, VxRail G560F VCF, VxRail P Series Nodes, VxRail P570, VxRail P570F, VxRail P580N
, VxRail P670F, VxRail P670N, VxRail P675F, VxRail P675N, VxRail S Series Nodes, VxRail S570, VxRail S570 VCF, VxRail S670, VxRail Software, VxRail V470, VxRail V570, VxRail V570 VCF, VxRail V570F, VxRail V570F VCF, VXRAIL V670F, VxRail VD-4510C, VxRail VD-4520C, VxRail VE-660, VxRail VE-6615, VxRail VP-760, VxRail VP-7625, VxRail VS-760
...
Article Properties
Article Number: 000182663
Article Type: Solution
Last Modified: 10 Sep 2025
Version: 7
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