08-15-2012 03:55 AM - edited 03-04-2019 05:16 PM
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
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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
08-15-2012 04:03 AM
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.
08-15-2012 04:15 AM
08-15-2012 04:24 AM
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.
04-16-2013 02:06 AM
How did you finally resolve the problem?
04-16-2013 02:38 AM
Laurent,
If you have router has crashinfo files, post the last three.
06-13-2013 01:22 PM
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!
06-13-2013 01:24 PM
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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