Brocade Switch: SNMP-1008 "The last device change happened at"

Asset ID:	1-72-1597448.1
Update Date:	2013-11-13
Keywords:

Solution Type Problem Resolution Sure

Solution 1597448.1 : Brocade Switch: SNMP-1008 "The last device change happened at"

Applies to:

Brocade 200E Switch - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
SNMP-1008 Message , [SNMP-1008], ,, INFO, , The last device change happened at: .

-Probable Cause: Indicates the last device change time.
-Recommended Action: Execute the nsshow to view the current device status.
-Severity: INFO

The meaning of this message is to inform the user that a specific port of the switch changed the status from offline or online.

Symptoms

The following events are seen in errdump section of Brocade switch logs:

2013/11/03-20:17:31, [SNMP-1008], 9285, FID 128, INFO, sansw02_or, The last device change happened at : Sun Nov 3 20:17:31 2013
2013/11/03-20:22:46, [SNMP-1008], 9286, FID 128, INFO, sansw02_or, The last device change happened at : Sun Nov 3 20:22:46 2013
2013/11/03-20:28:02, [SNMP-1008], 9288, FID 128, INFO, sansw02_or, The last device change happened at : Sun Nov 3 20:28:01 2013

Cause

Could be a bad cable or a bad SFP attached to the switch port

Use 'fabstateshow' to determine which port is being called out. In this case, the suspect port is 7 :

fabstateshow:
/fabos/cliexec/fabstateshow        :
Time Stamp   Input and *Action                           S, P   Sn,Pn Port Xid
================================================================================
Switch 0; Sun Nov 3 15:02:26 2013
15:02:26.677 *Removing all nodes from port               D2,P0 D2,P0 7     NA
15:02:27.181 SCN Port Offline;g=0x258                    D2,P0 D2,P0 7     NA
15:02:27.181 *Removing all nodes from port               D2,P0 D2,P0 7     NA
15:07:41.599 SCN LR_PORT (0);g=0x258                     D2,P0 D2,P0 7     NA
15:07:41.602 SCN Port Online;g=0x258                     D2,P0 D2,P1 7     NA
15:07:41.602 Port Elp engaged                            D2,P1 D2,P0 7     NA

Use'porterrshow' to check to see if error counters are incrementing. In this case, we are seeing loss sync / loss sig on port 7, which further suggests a physical hardware problem with that port:

porterrshow:
/fabos/cliexec/porterrshow        :
        frames enc crc crc   too too bad enc disc link loss loss frjt fbsy
       tx   rx   in err g_eof shrt long eof out   c3 fail sync sig
     ============================================================================
0: 1.7g 568m   0    0    0    0    0    0    0    0    0    2    4    0    0
1:    0    0    0    0    0    0    0    0    0    0    0    0    2    0    0
2:   14   15    0    0    0    0    0    0    0    0    0    2    4    0    0
3:    0    0    0    0    0    0    0    0    0    0    0    0    2    0    0
4: 3.5g 2.0g   0    0    0    0    0    0    0 321    0    2    4    0    0
5: 3.0g 2.8g   0    0    0    0    0    0    0 234    0    2    4    0    0
6: 748m 3.9g   0    0    0    0    0    0    0    0    0    5    7    0    0
7: 2.3g 2.1g   0    0    0    0    0    0    0   17    0 751 754    0    0           < loss sync / loss sig

If the switch is at below FOS 6.4.0c, it could also be Brocade DEFECT000308461.

Solution

Replace the FC cable attached to the suspect port

Replace the SFP (or 'GBIC' transceiver) in the suspect port using the steps in the following document: Brocade Fibre Channel (FC) Switch SFP Replacement (Doc ID 1447836.1)

If the switch is at below FOS 6.4.0c, it could also be Brocade DEFECT000308461. This issue is fixed by upgrading FOS to 6.4.0c or later.

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