C3560 suddenly restared

[nijamudeen_aziz]

000085: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: System previously crashed with the following message:
000086: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
000087: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Copyright (c) 1986-2007 by Cisco Systems, Inc.
000088: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Compiled Thu 19-Jul-07 18:15 by nachen
000089: *Mar 1 03:01:33: %PLATFORM-1-CRASHED:
000090: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Instruction Access Exception (0x0400)!
000091: *Mar 1 03:01:33: %PLATFORM-1-CRASHED:
000092: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: SRR0 = 0x41414140 SRR1 = 0x00029230 SRR2 = 0x0062C72C SRR3 = 0x00021200
000093: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: ESR = 0x00000000 DEAR = 0x00000000 TSR = 0x8C000000 DBSR = 0x00000000
000094: *Mar 1 03:01:33: %PLATFORM-1-CRASHED:
000095: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: CPU Register Context:
000096: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Vector = 0x00000400 PC = 0x41414140 MSR = 0x00029230 CR = 0x53000005
000097: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: LR = 0x41414141 CTR = 0x0004D968 XER = 0xC000002A
000098: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R0 = 0x41414141 R1 = 0x0287DE78 R2 = 0x00000000 R3 = 0x0287AD20
000099: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R4 = 0x0000000F R5 = 0xFFFFFFFF R6 = 0x016B6648 R7 = 0x00000000
000100: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R8 = 0x0000000F R9 = 0x028341BC R10 = 0x00000031 R11 = 0x00000000
000101: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R12 = 0xEBDD35F5 R13 = 0x00110000 R14 = 0x00B74E58 R15 = 0x00000000
000102: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R16 = 0x00000000 R17 = 0x00000000 R18 = 0x00000000 R19 = 0x00000000
000103: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R20 = 0xFFFFFFFF R21 = 0x00000000 R22 = 0x00000000 R23 = 0x0287E070
000104: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R24 = 0x00000000 R25 = 0x00000001 R26 = 0x000000DC R27 = 0x00000024
000105: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: R28 = 0x41414141 R29 = 0x41414141 R30 = 0x41414141 R31 = 0x41414141
000106: *Mar 1 03:01:33: %PLATFORM-1-CRASHED:
000107: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Stack trace:
000108: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: PC = 0x41414140, SP = 0x0287DE78
000109: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Frame 00: SP = 0x41414141 PC = 0x41414141
000110: *Mar 1 03:01:33: %PLATFORM-1-CRASHED:

[Flavio Miranda · Accepted solution]

Hi

 Not much alternative.  Replace if you have spare. Upgrade if possible. Very old switch, probably there will be no support anymore.

[Preston Chilcote · Accepted solution]

Older equipment often doesn't have parity error detection, making it very difficult to determine if the cause of the crash is hardware or software.  Assuming the switch has been in place for a long time and this is the first crash, the chances are high this is a parity error and there's really nothing you need to do.  If you see a second crash, you can compare some of the dumped registers like PC.  If they are the same, then chances increase that it's a software problem.  If they are different then the hardware will likely need to be replaced.

It doesn't hurt to upgrade software proactively to the latest available in case it's a software issue with an existing fix.  But, it's also time to start planning some hardware upgrades to switches with parity error detection and correction.