Kron script causing routers to crash/freeze. Please help!!!!

[irvswirve30]

I have applied the kron command:

kron occurrence Save at 23:00 28 recurring with the policy list, etc.

My NTP is working. The kron script ran the fist time through and then the second time, it did not run on the specified day which is the 28.

The kron script ran again 3 days later (not the specified date) and it caused my routers to have a software crash. Some routers recovered and others needed to be hard boot.

After the routers recovered and the routers that needed to be reloaded were reloaded, the kron schedule showed the correct time schedule.

My question is why did it run through the 1st time with no issues and the second time it ran through at an unscheduled time causing all my routers to freeze and crash and some recovered adn others needed to be rebooted.

The euipment in question is the 2811 Routers and the 3845 router.

Please, I need to explain this issue and any help will be much appreciated.

[Joe Clarke]

To answer this, you will need to provide the output of show version as well as the kron configuration you were using.  If a router crashes again, it would also be helpful to see the output of show stack.

[irvswirve30]

I checked the show version and I extracted this part:

System   returned to ROM by error - a Software forced crash, PC 0x4007AA3C at 23:55:52   EST Fri Dec 31 2010

My kron config was as follows:

kron occurrence Save at 23:00 28 recurring

policy-list Save

kron policy-list Save

cli wr

I hope this helps

[Joe Clarke]

I still need to see the "show version" output from this router that crashed.

[irvswirve30]

Ok here is the show ver for a router that recovered from the Software Forced crash..

Cisco IOS Software, 2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 12.4(13a), RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Tue 06-Mar-07 17:01 by prod_rel_team

ROM: System Bootstrap, Version 12.4(1r) [hqluong 1r], RELEASE SOFTWARE (fc1)

ccg-ewr-gw1-ds3 uptime is 2 days, 15 hours, 22 minutes
System returned to ROM by error - a Software forced crash, PC 0x4007AA3C at 23:55:52 EST Fri Dec 31 2010
System restarted at 23:57:51 EST Fri Dec 31 2010
System image file is "flash:c2800nm-advipservicesk9-mz.124-13a.bin"

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 2811 (revision 53.51) with 247808K/14336K bytes of memory.
Processor board ID FTX1019A390
2 FastEthernet interfaces
1 Serial interface
1 Virtual Private Network (VPN) Module
1 Subrate T3/E3 port
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

This is just one of the many. Do you want a show version of one of the routers that needed to be reloaded also?

[Joe Clarke]

Yes, a show ver from them would be good.  I'd also like to see the "show stack" from this router that did crash.

[irvswirve30]

I have attached the show stack from the router that crashed and recovered.

This is the sh ver from the the router that crashed and needed to be reloaded...

Cisco IOS Software, 3800 Software (C3845-ADVIPSERVICESK9-M), Version 12.4(16), RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Wed 20-Jun-07 15:26 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

ccg-ord-gw1 uptime is 1 day, 21 hours, 27 minutes
System returned to ROM by power-on
System restarted at 17:12:48 CST Sat Jan 1 2011
System image file is "flash:c3845-advipservicesk9-mz.124-16.bin"

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 3845 (revision 1.0) with 222208K/39936K bytes of memory.
Processor board ID FTX1124A2XN
2 Gigabit Ethernet interfaces
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity enabled.
479K bytes of NVRAM.
62720K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102

[Joe Clarke]

This is bug CSCsm20994.  The description may not match exactly, but there was another bug duped to this that matches your exact symptom.  If you upgrade to 12.4(20) or higher, the problem should go away.

[irvswirve30]

Thanks Joseph