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What do "invalid words" errors mean and how are they resolved?

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data-ontap-8
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Applies to

Any version of Data OnTap

Issue

"Invalid words" errors is seen in fibre channel stats for NetApp controller.  This article discusses what these errors mean.

From the filer side "invalid words" errors are seen when running commands to view FCP adapter stats.

In 7mode 

Filer>fcp stats

Statistics for adapter 0c:

Read Ops:               607021523
Write Ops:              1779814007
Other Ops:              11872337
KBytes In:              13499116753
KBytes Out:             17610629171
--Truncated--
Invalid Transmit Words: 1977
--Truncated--

In Clustered OnTap

Cluster::*> network fcp adapter stats -node <node> -adapter <adapter>

node: node1

                       Adapter: 0c
      Number of adapter resets: 0
      Number of frames overrun: -
     Number of frames underrun: -
--Truncated--
Invalid words transmitted: 1983
--Truncated--

 

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