PowerEdge：Mellanox ConnectX-4 LX 报告长度错误
Summary: 未在同一端对端配置网络 MTU 时，Mellanox ConnectX-4 LX 报告长度错误。
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Symptoms
在接口上接收巨型大小帧时，未启用巨型大小帧，并且卡统计信息记录了接收长度错误。
Cause
使用源 MTU 大小为 1500（默认值）的 iSCSI，但交换机设置为巨型帧，并且在卡的统计数据中收到接收长度错误。
Resolution
在整个网络数据路径中将 MTU 设置为相等是一般网络设计最佳实践，以避免接收的数据包超过端口配置的处理能力。
不要更换任何硬件。
此问题并不会影响系统的正常工作。
Affected Products
OEMR R440, OEMR R540, OEMR R640, OEMR R6415, OEMR R740, OEMR R740xd, OEMR R740xd2, OEMR R7415, OEMR R7425, OEMR R840, OEMR R940, OEMR R940xa, OEMR T640, Poweredge C4140, PowerEdge C6420, PowerEdge FC640, PowerEdge R440, PowerEdge R540, PowerEdge R640
, PowerEdge R6415, PowerEdge R740, PowerEdge R740XD, PowerEdge R740XD2, PowerEdge R7415, PowerEdge R7425, PowerEdge R840, PowerEdge R940, PowerEdge R940xa, PowerEdge T640
...
Article Properties
Article Number: 000147729
Article Type: Solution
Last Modified: 13 Oct 2025
Version: 4
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