crash catalyst 2350 when changing vtp transparent to vtp version 3

Answered Question
Sep 8th, 2010

Hello,

during configuration of  a cisco WS-C2350-48TD (PowerPC405) processor (revision A0) with 131072K bytes of memory switch

running flash:/c2350-lanlitek9-mz.122-52.SE/c2350-lanlitek9-mz.122-52.SE.bin

i found that after minimal config and then switching from vtp transparent to vtp version 3 the switch will crash and go into endless-boot and write flashh full of crashinfo files. Since serial break did not help, i had to go to the switch and use the button on the front to come into the bootman to be able to clear the config file and recover .

Here ist a short way to reproduce it (i tried an other 2350-48 for that):

conf t

user cisco privilege 15 password cisco
enable secret cisco
vtp mode transparent
exit
wr

conf t

!
vlan 2
name vvv-2
!
vlan 3
name vvv-3
!
vlan 4
name vvv-4
!
!... etc...

!

vlan 98
name vvv-98
!
vlan 99
name vvv-99
!
exit
exit
wr


Switch#wr
*Mar  1 00:03:33.112: %SYS-5-CONFIG_I: Configured from console by console
Building configuration...
[OK]
Switch#sh vtp status
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 :
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : 0026.5286.dd80
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00


Feature VLAN:
--------------
VTP Operating Mode                : Transparent
Maximum VLANs supported locally   : 128
Number of existing VLANs          : 103
Configuration Revision            : 0
MD5 digest                        : 0xF5 0xAB 0x33 0x77 0xFE 0xB1 0xFB 0x39
                                    0x1F 0x25 0x94 0x91 0x5A 0x21 0x4E 0xBA
Switch#
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#vtp domain cisco
Changing VTP domain name from NULL to cisco
Switch(config)#vtp version 3
*Mar  1 00:04:04.964: %SW_VLAN-6-VTP_DOMAIN_NAME_CHG: VTP domain name changed to cisco.



00:04:06 UTC Mon Mar 1 1993: Unexpected exception to CPUvector 2000, PC = 0
-Traceback=


Writing crashinfo to flash:/crashinfo_ext/crashinfo_ext_1


=== Flushing messages (00:04:08 UTC Mon Mar 1 1993) ===
Buffered messages:


*Mar  1 00:01:09.885: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
*Mar  1 00:01:11.017: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
*Mar  1 00:01:32.215: %SYS-5-RESTART: System restarted --
Cisco IOS Software, C2350 Software (C2350-LANLITEK9-M), Version 12.2(52)SE, RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Fri 25-Sep-09 11:30 by sasyamal
*Mar  1 00:01:33.843: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to down
*Mar  1 00:01:34.849: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to down
*Mar  1 00:01:34.967: %PLATFORM-6-MODULE_INSERTED: 10GE X2 module inserted in slot 1
*Mar  1 00:01:37.484: %PLATFORM-6-MODULE_INSERTED: 10GE X2 module inserted in slot 2
*Mar  1 00:02:28.830: %SYS-5-CONFIG_I: Configured from console by console
*Mar  1 00:03:33.112: %SYS-5-CONFIG_I: Configured from console by console
*Mar  1 00:04:04.964: %SW_VLAN-6-VTP_DOMAIN_NAME_CHG: VTP domain name changed to cisco.
Queued messages:
*Mar  1 00:04:09.519: %SYS-3-LOGGER_FLUSHING: System pausing to ensure console debugging output.


*Mar  1 00:04:06.423: %SW_VLAN-6-OLD_CONFIG_FILE_READ: Old version 2 VLAN configuration file detected and read OK.  Version 3
    files will be written in the future.
Cisco IOS Software, C2350 Software (C2350-LANLITEK9-M), Version 12.2(52)SE, RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Fri 25-Sep-09 11:30 by sasyamal


Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
SRR0 = 0x01088C78  SRR1 = 0x00029230  SRR2 = 0x005BE484  SRR3 = 0x00021000
ESR = 0x00000000  DEAR = 0x00000000  TSR = 0x8C000000  DBSR = 0x11100000


CPU Register Context:
Vector = 0x00002000  PC = 0x00000000  MSR = 0x00029230  CR = 0x53005033
LR = 0x001B2BC8  CTR = 0x00000000  XER = 0x8000006F
R0 = 0x00000000  R1 = 0x033F9E40  R2 = 0x00000000  R3 = 0x01DCA7EC
R4 = 0x01DCA7E8  R5 = 0x034374A0  R6 = 0x00000000  R7 = 0x00000000
R8 = 0x00000050  R9 = 0x00000001  R10 = 0x001B0800  R11 = 0x00000001
R12 = 0x00000000  R13 = 0x07981A2C  R14 = 0x00C762C0  R15 = 0x00000000
R16 = 0x023DE1BC  R17 = 0x023DE1BC  R18 = 0x00000001  R19 = 0x00000000
R20 = 0x00000000  R21 = 0x00000000  R22 = 0x00000000  R23 = 0x02422FCC
R24 = 0x00000000  R25 = 0x00000001  R26 = 0x00000000  R27 = 0x00000001
R28 = 0x00000000  R29 = 0x00000001  R30 = 0x00000003  R31 = 0x01DCA7C8


Stack trace:
PC = 0x00000000, SP = 0x033F9E40
Frame 00: SP = 0x033F9E58    PC = 0x001B2B8C
Frame 01: SP = 0x033F9E68    PC = 0x001AE674
Frame 02: SP = 0x033F9F50    PC = 0x001BBCBC
Frame 03: SP = 0x033F9F78    PC = 0x0019C3BC
Frame 04: SP = 0x033FA080    PC = 0x00624EE0
Frame 05: SP = 0x033FA0A8    PC = 0x0018B0D8
Frame 06: SP = 0x033FA808    PC = 0x0018CF44
Frame 07: SP = 0x033FA870    PC = 0x00C38500
Frame 08: SP = 0x033FA8A8    PC = 0x00C373F0
Frame 09: SP = 0x033FA8C0    PC = 0x00C47274
Frame 10: SP = 0x033FA8F0    PC = 0x00C47768
Frame 11: SP = 0x033FA900    PC = 0x00C47B30
Frame 12: SP = 0x033FA918    PC = 0x00C4C954
Frame 13: SP = 0x033FA9B0    PC = 0x00C76EB0
Frame 14: SP = 0x033FA9B8    PC = 0x010F16F0
Frame 15: SP = 0x00000000    PC = 0x010E81C0



Switch uptime is 4 minutes, 12 seconds


cisco WS-C2350-48TD (PowerPC405) processor (revision A0) with 131072K bytes of memory.
Processor board ID FDO1330R083


Here the boot-loop-crash-write starts.

Any Ideas ?

I didn't find buginfos for this or newer IOS.

Will this happen also for the near relative 3560E ?

Thank you for any hint,

Jürgen.

I have this problem too.
0 votes
Correct Answer by Bobby Thekkekandam about 6 years 3 months ago

Hi Jürgen,

Based on the information you provided, I believe you are running into CSCtd46800 This is fixed in 12.2(53)SE1, 12.2(55)SE, and newer releases.


Hope that Helps,

Bobby

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Correct Answer
Bobby Thekkekandam Wed, 09/08/2010 - 09:33

Hi Jürgen,

Based on the information you provided, I believe you are running into CSCtd46800 This is fixed in 12.2(53)SE1, 12.2(55)SE, and newer releases.


Hope that Helps,

Bobby

ilkadmin-cco Thu, 09/09/2010 - 09:34

Yes, this explains it.

Funny that i could not find the bug thru the Bug Tollkit with the keywords "crash vtp version 3".

The fixed IOS is from 12 AUG, last time i checked for a new one was 11th AUG.

I will update an idle 2350 and check.

Juergen.

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