Cisco Nexus Modules Verification & Testing

Today I was working on one of Nexus-7K's and i realized that one of Sup Engines was failing in module 5, i was not sure what was the exact reason so i performed some tests. If i didn't knew of this command there was no way i was able to know the exact reason. In the end i thought it's worth mentioning on Blog :)

switch# show module

Mod Ports Module-Type Model Status

--- ----- -------------------------------- ------------------ ------------

2 48 10/100/1000 Mbps Ethernet Module N7K-M148GT-11 ok

3 48 10/100/1000 Mbps Ethernet Module N7K-M148GT-11 ok

4 48 10/100/1000 Mbps Ethernet Module N7K-M148GT-11 ok

5 0 Supervisor module-1X N7K-SUP1 active *

6 0 Supervisor module-1X N7K-SUP1 ha-standby

7 32 10 Gbps Ethernet Module N7K-M132XP-12 ok

9 48 1000 Mbps Optical Ethernet Modul N7K-M148GS-11 ok

Mod Sw Hw

--- -------------- ------

2 5.0(2) 1.3

3 5.0(2) 1.3

4 5.0(2) 1.3

5 5.0(2) 1.2

6 5.0(2) 1.2

7 5.0(2) 1.5

9 5.0(2) 1.2

Mod MAC-Address(es) Serial-Num

--- -------------------------------------- ----------

2 00-24-98-e9-14-58 to 00-24-98-e9-14-8c JAF1306AAFP

3 00-24-98-e8-28-84 to 00-24-98-e8-28-b8 JAF1303ACPB

4 00-24-f7-1c-85-b0 to 00-24-f7-1c-85-e4 JAF1309ABLE

5 00-24-98-6f-95-00 to 00-24-98-6f-95-08 JAF1309AECN

6 00-24-f7-18-92-88 to 00-24-f7-18-92-90 JAF1309AEFE

7 00-24-98-e9-29-60 to 00-24-98-e9-29-84 JAF1307ALCB

9 00-24-f7-1c-d5-50 to 00-24-f7-1c-d5-84 JAF1311AEMM

Mod Online Diag Status

--- ------------------

2 Pass

3 Pass

4 Pass

5 Fail

6 Pass

7 Pass

9 Pass

At this point i was not sure what was the exact reason for Module 5 to fail. There is very handy Nexus command that you can perform on any module to see the exact reason of why it's failing. 

switch#sh diagnostic result module 5 test 7 detail 
Current bootup diagnostic level: complete
Module 5: Supervisor module-2 (Active)

Diagnostic level at card bootup: complete

Test results: (. = Pass, F = Fail, I = Incomplete,
U = Untested, A = Abort, E = Error disabled)

______________________________________________________________________

7) CompactFlash E

Error code ------------------> DIAG TEST ERR DISABLE
Total run count -------------> 22148
Last test execution time ----> Sun Jul 11 21:23:10 2013
First test failure time -----> Sun Jul 11 11:53:20 2013
Last test failure time ------> Sun Jul 21 21:23:20 2013
Last test pass time ---------> Sun Jul 21 11:23:20 2011
Total failure count ---------> 20
Consecutive failure count ---> 20
Last failure reason ---------> The compact flash power test
failed

There are 16 tests that can be performed on any module, simply replace 7 with any number in b/w 1-16 to see the test results. 

switch #show diagnostics result module 5 test 1 detail

switch #show diagnostics result module 5 test 2 detail

switch #show diagnostics result module 5 test 3 detail 

-----

------

-------

switch# sh diagnostic result module 5 test 16 detail 

Current bootup diagnostic level: complete

Module 5: Supervisor module-2  (Standby)

  Diagnostic level at card bootup: complete

        Test results: (. = Pass, F = Fail, I = Incomplete,

        U = Untested, A = Abort, E = Error disabled)

        ______________________________________________________________________

        16) OBFL .

                Error code ------------------> DIAG TEST SUCCESS

                Total run count -------------> 1

                Last test execution time ----> Fri Jan  4 03:35:49 2013

                First test failure time ----->  n/a

                Last test failure time ------>  n/a

                Last test pass time ---------> Thu Jan 4   03:35:58 2013

                Total failure count ---------> 0

                Consecutive failure count ---> 0

                Last failure reason ---------> No failures yet

                Next Execution time --------->  n/a

        ______________________________________________________________________