Hi all,
After upgrading 12 of our WS-C2960+48PST-L and WS-C2960+24PC-L switches, they all give the following error and go in a boot loop: Unexpected exception to CPUvector 2000.
The IOS that gave the error is 15.2(2)E7. There were multiple crashlogs generated like the one below:
Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 15.2(2)E7, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2017 by Cisco Systems, Inc.
Compiled Wed 12-Jul-17 15:29 by prod_rel_team
Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
SRR0 = 0x01ADE860 SRR1 = 0x00029230 SRR2 = 0x01EAEA28 SRR3 = 0x00029230
ESR = 0x00000000 DEAR = 0x00000000 TSR = 0x84000000 DBSR = 0x01000000
CPU Register Context:
Vector = 0x00002000 PC = 0x01EAEA28 MSR = 0x00029230 CR = 0x30335059
LR = 0x0019C9A8 CTR = 0x00000040 XER = 0x80000024
R0 = 0x00000003 R1 = 0x047EBEC0 R2 = 0x00000000 R3 = 0x00000000
R4 = 0x047EBF14 R5 = 0x00000041 R6 = 0x0000C300 R7 = 0x0000003B
R8 = 0x002DB400 R9 = 0x02C10000 R10 = 0x02C80000 R11 = 0x02C80000
R12 = 0x00016837 R13 = 0x00110000 R14 = 0x30309035 R15 = 0x00000001
R16 = 0x04880510 R17 = 0x00000DF0 R18 = 0x047EBED4 R19 = 0x00000000
R20 = 0x04812A0E R21 = 0x00000001 R22 = 0x00000001 R23 = 0xFFFFFFFF
R24 = 0x047EBF14 R25 = 0x00000000 R26 = 0x047EBF14 R27 = 0x03E8BF78
R28 = 0x00000003 R29 = 0x00000398 R30 = 0x04812A04 R31 = 0x04814148
Stack trace:
PC = 0x01EAEA28, SP = 0x047EBEC0
Frame 00: SP = 0x047EC058 PC = 0x0019C8C0
Frame 01: SP = 0x047EC118 PC = 0x001D0A60
Frame 02: SP = 0x047EC200 PC = 0x0019100C
Frame 03: SP = 0x047EC208 PC = 0x01BC2670
Frame 04: SP = 0x00000000 PC = 0x01BBE9F0
I booted some of the switches again with the 15.2(2)E6 IOS and they boot and work like they should.
Do I have to downgrade all the switches again or is there another reason for the previous error?
Regards
Vincent
