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Cisco Bug: CSCub11370 - 9124 incorrectly displays TCAM

Last Modified

Feb 23, 2018

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

5.0(1.1) 5.0(7)

Description (partial)

Symptom:
NPV devices are not able to log in to the MDS 9124/9134. For example, in case of a UCS fabric interconnect, the fabric interconnect can log in to the MDS but the blades' vhba's can't log in.
The following error is displayed in "show logging log":
2012 Dec 19 04:53:04 MDS9124b  PORT-5-IF_UP  %$VSAN 20%$ Interface port-channel 20 is up in mode F   
2012 Dec 19 04:53:04 MDS9124b  PORT-5-IF_UP  %$VSAN 20%$ Interface fc1/20 is up in mode F port-channel 20 ucs_fi_b2 
2012 Dec 19 04:53:14 MDS9124b  ZONE-2-ZS_TCAM_PROGRAMMING_FAILED  %$VSAN 20%$ TCAM operation failed :  , Reason: No space in hardware to program entries 
2012 Dec 19 04:56:15 MDS9124b last message repeated 19 times

However, after checking the TCAM usage with the following command:
`show zbm internal all-port-groups usage`
You'll see that space is still available:
-------------------------- Port Group 1 Usage ----------------------------
Entries in zone tcam: 32/512
Entries in zone membership table: 32/512
Entries in alpa table: 2/1024
--------------------------------------------------------------------------

-------------------------- Port Group 2 Usage ----------------------------
Entries in zone tcam: 21/512
Entries in zone membership table: 21/512
Entries in alpa table: 12/1024
--------------------------------------------------------------------------

Conditions:
This happens when the NPV device connected to the NPIV MDS 9124/9134 has been reloading frequently.
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