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New Member

ISR 4451-X reloading without crash logs

Hi All,

I have recently had multiple reloads on two of our routers (ISR 4451-X) installed at different sites. 

I can't find any crash logs after this sudden reload. It could be a crash of the Kernel which I believe do not produce any logs.

Has anyone encountered a similar crash on any of the IOS-XE platforms?




Hall of Fame Super Gold

Post the output to the

Post the output to the command "sh version".

New Member

Hi AshilWe had 2 routers

Hi Ashil

We had 2 routers reload without cause,  as you state there are no crash logs.  Have you made any progress in determining what caused your reload?  We are running the following bin isr4400-universalk9.03.13.00.S.154-3.S-ext.SPA.

Hall of Fame Super Gold

Have you made any progress in

Have you made any progress in determining what caused your reload? 

Post the output to the command "sh version".

New Member

Hi,Due to the large number of


Due to the large number of ISR4451 routers in our network, we had an internal discussion with Cisco. Unfortunately, I cannot comment on the outcome of these discussions as they are confidential.

Please raise a TAC case with Cisco and confirm with TAC whether the new replacement router (If Cisco TAC agrees to the RMA process) will not be exhibiting the same reload issue.





New Member

Hi All,Cisco TAC have advised

Hi All,

Cisco TAC have advised a fix for this issue. (see below link)

However it is best to raise a ticket with Cisco TAC and follow the procedures advised by them rather than go ahead with the upgrade procedure described in the link.



Ashil Abdulla

New Member

I recently experienced an

I recently experienced an unexplained reload on an ISR 4451-X. Anyone have any clues?

router#sh ver
Cisco IOS XE Software, Version 03.13.00.S - Extended Support Release
Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.4(3)S, RELEASE SOFTWARE (fc11)
Technical Support:
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Mon 28-Jul-14 01:18 by mcpre

Cisco IOS-XE software, Copyright (c) 2005-2014 by cisco Systems, Inc.
All rights reserved.  Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0.  The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.  For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE


router uptime is 1 hour, 6 minutes
Uptime for this control processor is 1 hour, 7 minutes
System returned to ROM by reload
System restarted at 10:14:38 PST Tue Dec 16 2014
System image file is "bootflash:/isr4400-universalk9.03.13.00.S.154-3.S-ext.SPA.bin"
Last reload reason: PowerOn


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:

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

Technology Package License Information: 

Technology    Technology-package           Technology-package
              Current       Type           Next reboot  
appx             None             None             None
uc               None             None             None
security         securityk9       Permanent        securityk9
ipbase           ipbasek9         Permanent        ipbasek9

cisco ISR4451-X/K9 (2RU) processor with 664304K/6147K bytes of memory.
Processor board ID xxxxxxxxx
4 Gigabit Ethernet interfaces
32768K bytes of non-volatile configuration memory.
8388608K bytes of physical memory.
15396735K bytes of flash memory at bootflash:.

Configuration register is 0x2102


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