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New Member

2911 Reboot reason?

Please provide me why my router rebooted?

reason is: bus error at PC 0x23B1F92C, address 0x3C

What does this mean&

show ver:

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(3)T, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Fri 23-Mar-12 16:57 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M15, RELEASE SOFTWARE (fc1)

c2811 uptime is 5 minutes

System returned to ROM by bus error at PC 0x23B1F92C, address 0x3C at 10:39:41 UTC Wed Aug 15 2012

System restarted at 10:41:26 UTC Wed Aug 15 2012

System image file is "flash0:c2900-universalk9-mz.SPA.152-3.T.bin"

Last reload type: Normal Reload

Last reload reason: bus error at PC 0x23B1F92C, address 0x3C

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

Cisco CISCO2911/K9 (revision 1.0) with 483328K/40960K bytes of memory.

Processor board ID FCZ162620JY

4 FastEthernet interfaces

3 Gigabit Ethernet interfaces

1 terminal line

1 Virtual Private Network (VPN) Module

DRAM configuration is 64 bits wide with parity enabled.

255K bytes of non-volatile configuration memory.

250880K bytes of ATA System CompactFlash 0 (Read/Write)

License Info:

License UDI:

-------------------------------------------------

Device#   PID                   SN

-------------------------------------------------

*0        CISCO2911/K9          FCZ162620JY

Technology Package License Information for Module:'c2900'

-----------------------------------------------------------------

Technology    Technology-package           Technology-package

              Current       Type           Next reboot

------------------------------------------------------------------

ipbase        ipbasek9      Permanent      ipbasek9

security      securityk9    Permanent      securityk9

uc            None          None           None

data          None          None           None

Configuration register is 0x2102

Everyone's tags (4)
7 REPLIES

Re: 2911 Reboot reason?

check your flash for crash file for more information why the switch creashed.

you get bus error crash when the crash is caused by a corrupted program counter (PC). The PC value is the location of the instruction which the processor was executing when the bus error occured. When a bus error caused by a corrupted PC occurs. the crash file will provide more info. mainly software issue.

New Member

Re: 2911 Reboot reason?

In the attached file crashinfo

Re: 2911 Reboot reason?

ALIGN-1-FATAL: Illegal access to a low address according to cisco the switch identified a fatal error in software and could not correct it. might be a bug. escalate to cisco.

New Member

2911 Reboot reason?

How did you finally resolve the problem?

Hall of Fame Super Gold

2911 Reboot reason?

Laurent,

If you have router has crashinfo files, post the last three.

New Member

Re: 2911 Reboot reason?

i i have the same problem, now im trying to update the IOS in case that the problem was a bug of this version.

But the rare thing is that it has more than a year running without problems and now it reboots constantly,

xxxxx#sh version

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(2)T1, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Wed 29-Feb-12 20:40 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M15, RELEASE SOFTWARE (fc1)

xxxxxx uptime is 29 minutes

System returned to ROM by bus error at PC 0x23A5571C, address 0x3C at 14:28:16 VE Thu Jun 13 2013

System restarted at 14:30:04 VE Thu Jun 13 2013

System image file is "flash0:c2900-universalk9-mz.SPA.152-2.T1.bin"

Last reload type: Normal Reload

Last reload reason: bus error at PC 0x23A5571C, address 0x3C

i've attached the crash files..

i'll apreciate your help!      

New Member

Re: 2911 Reboot reason?

ive increased the max fragment buffer to 512 on the interface b after the first reload but it doesnt seem to work

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