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Cisco Bug: CSCvr95974 - Inconsistent xbar status in NX-OS command outputs

Last Modified

May 04, 2020

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

8.1(1a)

Description (partial)

Symptom:
In rare circumstances, it is possible that the output of NX-OS command show module indicates that the status of MDX fabric (xbar) module is ok, while the output of show environment will indicate a failure:

<pre>
m9718-1# show module | i Fabric
1    0      Fabric Module 1                     DS-X9718-FAB1      ok
3    0      Fabric Module 1                     DS-X9718-FAB1      ok
5    0      Fabric Module 1                     DS-X9718-FAB1      ok
m9718-1# show environ | i xbar | ex Absent
xbar-1   Crossbar1(s1)   125             115         46         Ok             
xbar-1   Crossbar2(s2)   125             115         43         Ok             
xbar-1   Crossbar3(s3)   125             115         48         Ok             
xbar-1   Crossbar4(s4)   125             115         38         Ok             
xbar-3   Crossbar1(s1)   n/a             n/a         n/a        Failure        
xbar-3   Crossbar2(s2)   n/a             n/a         n/a        Failure        
xbar-3   Crossbar3(s3)   n/a             n/a         n/a        Failure        
xbar-3   Crossbar4(s4)   n/a             n/a         n/a        Failure        
xbar-5   Crossbar1(s1)   125             115         47         Ok             
xbar-5   Crossbar2(s2)   125             115         43         Ok             
xbar-5   Crossbar3(s3)   125             115         47         Ok             
xbar-5   Crossbar4(s4)   125             115         37         Ok             
</pre>

Conditions:
This issue has been observed only on MDS 9718 chassis with DS-X9718-FAB1 fabric modules.
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