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Cisco Bug: CSCvt41359 - MDS9710 `show system internal xbar event-history errors` includes unclear "module 6 link 4" output

Last Modified

Mar 23, 2020

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

8.2(1)

Description (partial)

Symptom:
show system internal xbar event-history errors output contains link number that doesn't correspond to port number on supervisor in show hardware internal xbar local driver_info output.

In this example, the error message references module 6 link 4.
<pre>
switch# show system internal xbar event-history errors
...
3) Event:E_DEBUG, length:59, at 876238 usecs after Tue Feb 18 15:21:48 2020
    [102] xbm_mod_ac_error(336): Sync fail for module 6 link 4
</pre>

When the supervisor in module 6 is active, there is no corresponding port 4.

<pre>
switch# show hardware internal xbar local driver_info 
 ------------------------------------------------------------------------------
 Port-Enabled     Connected-To                            Chan-Status  Speed
 ------------------------------------------------------------------------------
 01               Fab-1 link-01                           Synced       55Gbps
 05               Xbar-IF-Asic-01                         Synced       46Gbps
 14               Fab-6 link-01                           Synced       55Gbps
 16               Fab-5 link-01                           Synced       55Gbps
 18               Fab-4 link-01                           Synced       55Gbps
 20               Fab-3 link-01                           Synced       55Gbps
 24               Fab-2 link-01                           Synced       55Gbps
 ------------------------------------------------------------------------------
</pre>

Conditions:
MDS 9700 switches
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