Data Domain：qlogic 卡导致的网络配置设置无效错误

Summary: 传输超时触发了 QLogic 自动恢复机制，该机制将接口从配置的 MTU 9000 重置为默认 MTU 1500;如果问题再次出现，我们可以手动还原 MTU 或使用默认值配置接口。

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Symptoms

警报将显示： 

p0-4299   Thu Mar 12 06:47:09 2026   WARNING    Network   Interface Index=11:Setting=MTU   EVT-NETM-00003: Invalid network configuration setting on eth3c.
p0-4300   Thu Mar 12 06:47:10 2026   WARNING    Network   Interface Index=12:Setting=MTU   EVT-NETM-00003: Invalid network configuration setting on eth3d.


进 kernal.info 您将看到：  

Mar 12 06:47:03 xxxxxxxxxxxx kernel: [11647878.578944] (E4)[qede_tx_timeout:1023(eth3a)]Tx timeout!


Net show config 警报之前和之后的输出 

之前 

eth3c     Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
          inet addr:x.x.x.x  Bcast:10.149.219.255  Mask:255.255.252.0
          inet6 addr: fe80::3680:dff:fec8:2302/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:9000  Metric:1
          RX packets:8265118 errors:0 dropped:391043 overruns:0 frame:0
          TX packets:6061371 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:11286254464 (10.5 GiB)  TX bytes:7765370042 (7.2 GiB)
          Interrupt:66 Memory:9f820000-9f83ffff

      
之后 

eth3c     Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
          inet addr:x.x.x.x  Bcast:10.149.219.255  Mask:255.255.252.0
          inet6 addr: fe80::3680:dff:fec8:2302/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8265118 errors:0 dropped:391043 overruns:0 frame:0
          TX packets:6061371 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:11286254464 (10.5 GiB)  TX bytes:7765370042 (7.2 GiB)
          Interrupt:66 Memory:9f820000-9f83ffff

Cause

此问题是由 TX 超时引起的。虽然存在针对 QLogic TX 超时的自动恢复机制，但恢复过程会将网络接口重置为其默认配置。
在这种情况下，Data Domain 已配置 MTU 9000，但在触发自动恢复时，接口设置已恢复为默认 MTU 值 1500。

Resolution

如果问题再次出现，我们可以手动将 MTU 重置为所需值。 

net config ethXx mtu 1500 

Or 

net config ethXx mtu 9000


或者，我们可以让这些接口保留默认 MTU 1500 的配置，以避免在恢复过程中更改 MTU。

Affected Products

Data Domain
Article Properties
Article Number: 000486034
Article Type: Solution
Last Modified: 07 يوليو 2026
Version:  1
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