CISCO 2921 Router Rebooting Automatically

[saudhusain]

Hi Everyone

I am facing issue on CISCO 2921 Router since last week. Router keep on rebooting automatically. Find below details of Show commands output. Appreciate if anyone can guide about the root cause of Router rebooting. There are no configuration changes perform since last week and Router was working smoothly since last 5 months.

DRIVE#show ver
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.0(1)M2, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Thu 11-Mar-10 00:04 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M6, RELEASE SOFTWARE (fc1)

DRIVE uptime is 3 hours, 51 minutes
System returned to ROM by power-on
System image file is "flash0:c2900-universalk9-mz.SPA.150-1.M2.bin"
Last reload type: Normal Reload

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 CISCO2921/K9 (revision 1.0) with 487424K/36864K bytes of memory.
Processor board ID
3 Gigabit Ethernet interfaces
DRAM configuration is 64 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
254464K bytes of ATA System CompactFlash 0 (Read/Write)

License Info:

License UDI:

-------------------------------------------------
Device# PID SN
-------------------------------------------------
*0 CISCO2921/K9

Technology Package License Information for Module:'c2900'

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

Configuration register is 0x2102

DRIVE# dir flash:
Directory of flash0:/

2 -rw- 2903 May 24 2010 14:01:22 +00:00 cpconfig-29xx.cfg
3 -rw- 2915328 May 24 2010 14:01:36 +00:00 cpexpress.tar
4 -rw- 1038 May 24 2010 14:01:44 +00:00 home.shtml
5 -rw- 115712 May 24 2010 14:01:50 +00:00 home.tar
6 -rw- 1697952 May 24 2010 14:02:06 +00:00 securedesktop-ios-3.1.1.45-k9.pkg
7 -rw- 415956 May 24 2010 14:02:18 +00:00 sslclient-win-1.1.4.176.pkg
10 -rw- 4615 Jul 12 2010 21:09:42 +00:00 archived-config-0
11 -rw- 4652 Jul 13 2010 11:52:10 +00:00 archived-config-1
12 -rw- 4404 Jul 13 2010 17:41:08 +00:00 archived-config-2
13 -rw- 4428 Jul 13 2010 19:52:46 +00:00 archived-config-3
14 -rw- 4462 Jul 13 2010 19:54:34 +00:00 archived-config-4
15 -rw- 4080 Jul 13 2010 20:13:22 +00:00 archived-config-5
16 -rw- 4147 Mar 24 2011 14:03:14 +00:00 archived-config-6
17 -rw- 4008 Mar 24 2011 21:30:00 +00:00 archived-config-7
18 -rw- 3986 Sep 19 2011 19:58:40 +00:00 archived-config-8
19 -rw- 4095 Sep 11 2014 20:47:38 +00:00 archived-config-9
20 -rw- 4095 Sep 11 2014 20:48:46 +00:00 archived-config-10

DRIVE#show logging
Syslog logging: enabled (0 messages dropped, 2 messages rate-limited,
0 flushes, 0 overruns, xml disabled, filtering disabled)

No Active Message Discriminator.

No Inactive Message Discriminator.

Console logging: level debugging, 23 messages logged, xml disabled,
filtering disabled
Monitor logging: level debugging, 0 messages logged, xml disabled,
filtering disabled
Buffer logging: level debugging, 23 messages logged, xml disabled,
filtering disabled
Logging Exception size (4096 bytes)
Count and timestamp logging messages: disabled
Persistent logging: disabled
Trap logging: level informational, 27 message lines logged

Log Buffer (8192 bytes):

*Mar 1 00:00:03.843: %IOS_LICENSE_IMAGE_APPLICATION-6-LICENSE_LEVEL: Module name = c2900 Next reboot level = ipbasek9 and License = ipbasek9
*Sep 15 08:06:46.811: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to up
*Sep 15 08:06:46.811: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to up
*Sep 15 08:06:46.811: %LINK-3-UPDOWN: Interface GigabitEthernet0/2, changed state to up
*Sep 15 08:06:47.987: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
*Sep 15 08:06:47.987: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up
*Sep 15 08:06:47.987: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/2, changed state to up
*Sep 15 08:06:49.999: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down
*Sep 15 08:06:50.079: %LINEPROTO-5-UPDOWN: Line protocol on Interface NVI0, changed state to up
*Sep 15 08:06:51.111: %LINK-5-CHANGED: Interface Tunnel3, changed state to administratively down
*Sep 15 08:06:53.223: %SYS-5-CONFIG_I: Configured from memory by console
*Sep 15 08:06:55.727: %SYS-5-RESTART: System restarted --
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.0(1)M2, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Thu 11-Mar-10 00:04 by prod_rel_team
*Sep 15 08:06:55.895: %SNMP-5-COLDSTART: SNMP agent on host DRIVE is undergoing a cold start
*Sep 15 08:06:58.171: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to up
*Sep 15 08:07:15.807: %TRACKING-5-STATE: 8 ip sla 1 reachability Down->Up

[balaji.bandi]

At this stage hard to stay what is causing this auto reboot, since it says device come up with Power-on

here are steps to identify the issue.

1. check any Power Lead loose connection.

2. connect console and capture the logs when this situation happens again to identify what causing the issue.

3. you can try upgrading to a newer version and see if that fix the issue.

[Martin L]

show envi all ---look for temp, fans ok? how is Comm room?

any evidence of attacks to overflow /overload router? is traffic/bandwidth ok ?

[saudhusain]

There all around 5-6 CISCO devices in same data center and all are working fine. All devices are getting power from same source. how to identify if there is any attach on Router.

DRIVE#show environment all
SYSTEM POWER SUPPLY STATUS
==========================
Internal Power Supply Type: AC
Internal Power Supply 12V Output Status: Normal

External Redundant Power Supply is absent or powered off

SYSTEM FAN STATUS
=================
Fan 1 OK, Low speed setting
Fan 2 OK, Low speed setting
Fan 3 OK, Low speed setting
Fan 4 OK, Low speed setting

SYSTEM TEMPERATURE STATUS
=========================
Intake Left temperature: 18 Celsius, Normal
Intake Right temperature: 17 Celsius, Normal
Exhaust Left temperature: 28 Celsius, Normal
Exhaust Right temperature: 22 Celsius, Normal
CPU temperature: 72 Celsius, Normal
Power Supply Unit temperature: 39 Celsius, Normal

REAL TIME CLOCK BATTERY STATUS
==============================
Battery OK (checked at power up)

SYSTEM POWER
===============
Motherboard Components Power consumption = 58.8 W
Total System Power consumption is: 58.8 W

Environmental information last updated 00:00:07 ago

DRIVE#show processes cpu history

DRIVE 03:40:03 PM Sunday Sep 15 2019 UTC

111222221111111111111111111111111111111111111111222221111111
100
90
80
70
60
50
40
30
20
10
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
CPU% per second (last 60 seconds)

222222324222222122122222222112122222222222212222212222222222
100
90
80
70
60
50
40
30
20
10
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
CPU% per minute (last 60 minutes)
* = maximum CPU% # = average CPU%

2 1 1
3123124
100
90
80
70
60
50
40
30
20 *
10 * * *
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7..
0 5 0 5 0 5 0 5 0 5 0 5 0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%

DRIVE#show processes cpu
CPU utilization for five seconds: 1%/0%; one minute: 1%; five minutes: 1%

[balaji.bandi]

Looks for me all good as of now..maybe worth connect console cable and capture the logs.

[paul driver]

Hello

Check the flash, bootflash or sup-bootflash: for any crashinfo files, You then should be able to read these files and find possible find a root cause for the reloads.

dir flash:
dir bootflash
more flash:crashinfo_xxxx
more bootflash:crashinfo_xxxx

[saudhusain]

upgrading CISCO IOS resolve the issue . Thanks you all for your reply and support.

[ruch]

Hi Saudhusain, 

Can i know the firmware version which you have updated.