WS-C4507R+E %C4K_HWFLOWMAN-4-NFEFLINTERRUPT

[ChinYuanCHANG8173]

We have a WS-C4507R+E switch, the runnning software version is 03.08.07.E and the supervisor engine is WS-X45-SUP7L-E.

In the few day ago, the below log is appear:

%C4K_HWFLOWMAN-4-NFEFLINTERRUPT: NFE FL fldMemCorrectedEccErr interrupt. ErrLogEntry: 0, rep[0]: 0x1941888249F2, rep[1]: 0x1941888249F2, rep[2]: 0x965906CF6B8C0234, valid: false, multipleErrorsDetected: true, addr: 0x1283, syndrome: F7, ecc: 0x13A, data: 0x8D13117589C287, 927CA59641B3DA

I didn't find out any bug and cisco document related these log, Does any one could help to explained what this log mean and is there any impact or solution?

[marce1000]

  - fldMemCorrectedEccErr  : Looks like memory error(s) on the supervisor , for the moment still recoverable (corrected ECC error)

 M.

[ChinYuanCHANG8173]

Hi Marce

Thanks for your reply,

Could you please explain what the "still recoverable" mean and do you have any suggection about next action?

[marce1000 · Accepted solution]

 - It means a memory error that can be corrected , if the problem persists your options are : 1) power cycle of the switch 2) reseat of the module 3) Have the supervisor replaced (RMA), 

 M.

[Leo Laohoo]

Re-seat line card 4.

[ChinYuanCHANG8173]

Hi Leo

Thanks for your reply, I checked our WS-C4507R+E switch there is no line card 4 installed, Please refer to below:

#sh module
Switch Number: 1 Role: Virtual Switch Active

Chassis Type : WS-C4507R+E

Power consumed by backplane : 40 Watts

Mod  Ports   Card Type                                                     Model                Serial No.
---+-----+--------------------------------------+------------------+-----------
1       48      10/100/1000BaseT (RJ45)                            WS-X4648-RJ45-E 
2       12      1000BaseX SFP                                            WS-X4712-SFP-E 
3        6       Sup 7L-E 10GE (SFP+), 1000BaseX (SFP)     WS-X45-SUP7L-E 
5      12       1000BaseX (SFP)                                          WS-X4612-SFP-E 
6      12       1000BaseX (SFP)                                          WS-X4612-SFP-E 
7      12       1000BaseX (SFP)                                          WS-X4612-SFP-E J

M   MAC addresses                                   Hw  Fw                   Sw                          Status
--+--------------------------------+---+------------+----------------+---------
1   78da.6e07.3068 to 78da.6e07.3097    2.1                                                        Ok
2   fc58.9a01.bf0c to fc58.9a01.bf17        1.0                                                        Ok
3   885a.92d1.c300 to 885a.92d1.c305    3.0  15.0(1r)SG10  03.08.07.E              Ok
5   24e9.b312.f63c to 24e9.b312.f647     2.0                                                        Ok
6   78da.6ed8.b134 to 78da.6ed8.b13f     2.0                                                        Ok
7 24e9.b312.f60c to 24e9.b312.f617 2.0 Ok

Mod  Redundancy role           Operating mode           Redundancy status
----+-------------------+-------------------+----------------------------------
3       Active Supervisor         SSO                             Active

Switch Number: 2 Role: Virtual Switch Standby

Chassis Type : WS-C4507R+E

Power consumed by backplane : 40 Watts

Mod  Ports   Card Type                                                     Model                Serial No.
---+-----+--------------------------------------+------------------+-----------
1       48      10/100/1000BaseT (RJ45)                            WS-X4648-RJ45-E 
2       12      1000BaseX SFP                                            WS-X4712-SFP-E 
3        6       Sup 7L-E 10GE (SFP+), 1000BaseX (SFP)     WS-X45-SUP7L-E 
5      12       1000BaseX (SFP)                                          WS-X4612-SFP-E 
6      12       1000BaseX (SFP)                                          WS-X4612-SFP-E 
7      12       1000BaseX (SFP)                                          WS-X4612-SFP-E J

M   MAC addresses                                   Hw  Fw                   Sw                          Status
--+--------------------------------+---+------------+----------------+---------
1   78da.6e07.38a8 to 78da.6e07.38d7    2.1                                                        Ok
2   64f6.9ded.5820 to 64f6.9ded.582b     1.0                                                        Ok
3   885a.92d1.d340 to 885a.92d1.d345    3.0  15.0(1r)SG10   03.08.07.E             Ok
5   78da.6ed8.b290 to 78da.6ed8.b29b    2.0                                                        Ok
6   e4c7.22d1.ee50 to e4c7.22d1.ee5b    2.0                                                        Ok
7   e4c7.22d1.eebc to e4c7.22d1.eec7    2.0                                                         Ok

Mod Redundancy role Operating mode Redundancy status
----+-------------------+-------------------+----------------------------------
3 Standby Supervisor SSO Standby hot

[Leo Laohoo · Accepted solution]

I am not sure which line card is generating this error message. 

You might want to re-seat the supervisor card.  If the message returns, reseat all the rest of the cards.  

[Rich R · Accepted solution]

If you only see the error once you can ignore it.  Occasional memory parity errors are considered normal in all equipment (search for parity errors and cosmic radiation - not a joke).  If you have ECC (Error Correcting Code) memory and the OS supports it, then single bit errors can be corrected automatically - which is what is reported here.

If you see the error happening repeatedly then take the measures Marce and Leo have already suggested.  It's not clear from the message which module reported the error so you might need to check that with TAC.  If you reload the box and re-seat the affected module and still see the errors occurring then that means faulty memory so memory and/or module need to be replaced which you'll also need to talk to TAC about.

Check out these docs for more detail:
https://www.cisco.com/c/en/us/support/docs/routers/7200-series-routers/6345-crashes-pmpe.html
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/116135-trouble-6500-parity-00.html
https://community.cisco.com/t5/networking-blogs/parity-error/ba-p/3106988