Cisco 1841 router IOS Update

I've purchased a couple of Cisco 64 MB Compact Flash (CF) cards for my 1841 routers in order to run the

c1841-adventerprisek9-mz.124-24.T2.bin code. This IOS is feature packed compared to the default IP BASE IOS according Cisco's Feature Navigator Tool. 

It is also able to run MP-BGP/MPLS VPN, which is essential in doing labs for the CCIE R/S blueprint. So I went ahead and downloaded the IOS.
 

I found an easy and quick way to perform the IOS update. I first let the router bootup and run the default IOS, which in this case is the IP BASE.

Router>show version
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.4(12a), RELEASE SOFTWARE (fc3)
Technical Support: http://splashurl.com/m6n5s3d
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 22-Feb-07 15:10 by prod_rel_team

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

Router uptime is 1 minute
System returned to ROM by reload at 15:03:47 SGT Tue Aug 20 2013
System image file is "flash:c1841-ipbase-mz.124-12a.bin"

Cisco 1841 (revision 7.0) with 114688K/16384K bytes of memory.
Processor board ID FHK111819JT
2 FastEthernet interfaces
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
31360K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102


I ejected the 32 MB CF card and swapped with a 64 MB card, connected an RJ45 patch cable to the FE0/0 port (using FE0/1 doesn't work), which is connected to a TFTP server (my PC) on the other end. We also check if the new CF card is formatted (FAT16) and doesn't contain any irrelevant files.

After that we can transfer the new IOS via TFTP to the CF and check its integrity afterwards. We do a reboot for the new IOS to take effect.

Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#interface fastethernet0/0
Router(config-if)#ip address 192.168.1.1 255.255.255.0    
Router(config-if)#no shutdown
*Nov 16 15:10:28.423: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Nov 16 15:10:29.423: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#end
*Nov 16 15:10:45.719: %SYS-5-CONFIG_I: Configured from console by console
*Nov 16 15:10:52.735: %FILESYS-5-CF: External CompactFlash removed       // EJECTED 32 MB CF
Router#
Flash card inserted in flash. Reading filesystem on the device...   
Wait for the completion message before accessing device
Filesystem read completed in flash.
Device in flash available for use

*Nov 16 15:11:06.111: %FILESYS-5-CF: External CompactFlash inserted      // INSERTED 64 MB CF
Router#dir

Directory of flash:/

    1  -rw-         720   May 2 2007 21:56:14 +00:00  vlan.dat
    2  -rw-        1821   Aug 1 2006 19:08:30 +00:00  sdmconfig-2801.cfg
    3  -rw-     4734464   Aug 1 2006 19:09:04 +00:00  sdm.tar
    4  -rw-      833024   Aug 1 2006 19:09:28 +00:00  es.tar
    5  -rw-     1052160   Aug 1 2006 19:09:50 +00:00  common.tar
    6  -rw-        1038   Aug 1 2006 19:10:10 +00:00  home.shtml
    7  -rw-      102400   Aug 1 2006 19:10:30 +00:00  home.tar
    8  -rw-      491213   Aug 1 2006 19:10:50 +00:00  128MB.sdf
    9  -rw-     1684577   Aug 1 2006 19:11:22 +00:00  securedesktop-ios-3.1.1.27-k9.pkg
   10  -rw-      398305   Aug 1 2006 19:11:54 +00:00  sslclient-win-1.1.0.154.pkg
   11  -rw-    32999900  Mar 12 2008 19:46:56 +00:00  c2801-adventerprisek9-mz.124-19.bin
   12  -rw-        2362  Nov 23 2009 17:25:20 +00:00  pre_autosec.cfg
   13  -rw-      386294  Nov 23 2009 19:03:44 +00:00  crashinfo_20091123-190339
   14  -rw-      214858  Nov 23 2009 19:18:42 +00:00  crashinfo_20091123-191843
   15  -rw-         839  Mar 24 2010 23:48:34 +00:00  n
   16  -rw-         981  Apr 20 2011 20:00:54 +00:00  config
   17  -rw-        1091  Jan 31 2011 22:01:30 +00:00  startup-config
   18  -rw-        1105  Oct 18 2012 21:17:50 +00:00  exit
   19  -rw-        1407  Oct 23 2012 21:52:36 +00:00  o

Router#delete ?
  /force      Force delete
  /recursive  Recursive delete
  flash:      File to be deleted
  nvram:      File to be deleted

Router#delete /force ?
  /recursive  Recursive delete
  flash:      File to be deleted
  nvram:      File to be deleted

Router#delete /force /recursive ?
  flash:  File to be deleted
  nvram:  File to be deleted

Router#delete /force /recursive flash:?
flash:128MB.sdf                    flash:c2801-adventerprisek9-mz.124-19.bin
flash:common.tar                   flash:config
flash:crashinfo_20091123-190339    flash:crashinfo_20091123-191843
flash:es.tar                       flash:exit
flash:home.shtml                   flash:home.tar
flash:n                            flash:o
flash:pre_autosec.cfg              flash:sdm.tar
flash:sdmconfig-2801.cfg           flash:securedesktop-ios-3.1.1.27-k9.pkg
flash:sslclient-win-1.1.0.154.pkg  flash:startup-config
flash:vlan.dat

Router#delete /force /recursive flash:      // erase /all nvram: DOESN'T SEEM TO WORK
Router#dir
Directory of flash:/

No files in directory

64012288 bytes total (64012288 bytes free)
Router#copy tftp://192.168.1.2/c1841-adventerprisek9-mz.124-24.T2.bin flash
Destination filename [c1841-adventerprisek9-mz.124-24.T2.bin]?
Accessing tftp://192.168.1.2/c1841-adventerprisek9-mz.124-24.T2.bin...
Loading c1841-adventerprisek9-mz.124-24.T2.bin from 192.168.1.2 (via FastEthernet0/0):

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 40529832 bytes]

40529832 bytes copied in 212.124 secs (191067 bytes/sec)
Router#verify flash:c1841-adventerprisek9-mz.124-24.T2.bin
%Filesystem does not support verify operations
Verifying file integrity of flash:c1841-adventerprisek9-mz.124-24.T2.bin.........................................................................................................

<OUTPUT TRUNCATED>

....................................................................................................Done!
Embedded Hash   MD5 : D4265070CE2266CB3C7F459A49C1EFAA
Computed Hash   MD5 : D4265070CE2266CB3C7F459A49C1EFAA
CCO Hash        MD5 : B7C09EB264EA1D50E0E8254DB8DFF429

Signature Verified
Router#reload

System configuration has been modified. Save? [yes/no]: no
Proceed with reload? [confirm]

*Nov 16 15:17:17.563: %SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Technical Support: http://splashurl.com/m6n5s3d
Copyright (c) 2006 by cisco Systems, Inc.
PLD version 0x10
GIO ASIC version 0x127
c1841 platform with 131072 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled


Readonly ROMMON initialized
program load complete, entry point: 0x8000f000, size: 0xcb80
program load complete, entry point: 0x8000f000, size: 0xcb80

program load complete, entry point: 0x8000f000, size: 0x26a6e08
Self decompressing the image :

##################################################################################################################

############################################################################################## [OK]

Smart Init is enabled
smart init is sizing iomem
  ID            MEMORY_REQ         TYPE
                0X003AA110 public buffer pools
                0X00211000 public particle pools
                0X00020000 Crypto module pools
                0X000021B8 Onboard USB

If any of the above Memory Requirements are
"UNKNOWN", you may be using an unsupported
configuration or there is a software problem and
system operation may be compromised.

Allocating additional 1701480 bytes to IO Memory.
PMem allocated: 123731968 bytes; IOMem allocated: 10485760 bytes

              Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

           cisco Systems, Inc.
           170 West Tasman Drive
           San Jose, California 95134-1706



Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(24)T2, RELEASE SOFTWARE (fc2)
Technical Support: http://splashurl.com/m6n5s3d
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 19-Oct-09 16:11 by prod_rel_team

licensing flash block 0 needs to be initialized
licensing flash block 1 needs to be initialized
licensing flash block 0 needs to be initialized
licensing flash block 1 needs to be initialized

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://splashurl.com/lc8pd9c

If you require further assistance please contact us by sending email to
export@cisco.com.

Installed image archive
Cisco 1841 (revision 7.0) with 120832K/10240K bytes of memory.
Processor board ID FHK111915FK
2 FastEthernet interfaces
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
62720K bytes of ATA CompactFlash (Read/Write)


         --- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: no


Press RETURN to get started!


*Nov 16 15:19:29.343: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0  State changed to: Initialized
*Nov 16 15:19:29.347: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0  State changed to: Enabled
*Nov 16 15:19:31.971: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
*Nov 16 15:19:32.571: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
*Nov 16 15:19:35.711: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
*Nov 16 15:20:22.075: %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down
*Nov 16 15:20:22.079: %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down
*Nov 16 15:20:22.587: %IP-5-WEBINST_KILL: Terminating DNS process
*Nov 16 15:20:23.075: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
*Nov 16 15:20:33.611: %SYS-5-RESTART: System restarted --
Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(24)T2, RELEASE SOFTWARE (fc2)
Technical Support: http://splashurl.com/m6n5s3d
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 19-Oct-09 16:11 by prod_rel_team
*Nov 16 15:20:33.615: %SNMP-5-COLDSTART: SNMP agent on host Router is undergoing a cold start
*Nov 16 15:20:33.819: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
*Nov 16 15:20:33.819: %CRYPTO-6-GDOI_ON_OFF: GDOI is OFF
*Nov 16 15:20:33.819: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
*Nov 16 15:20:33.819: %CRYPTO-6-GDOI_ON_OFF: GDOI is OFF
*Nov 16 15:20:35.051: %SYS-6-BOOTTIME: Time taken to reboot after reload =  197 seconds
Router>show version | include IOS
Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(24)T2, RELEASE SOFTWARE (fc2)


I ran into a problem with one of the routers. It displayed a traceback error and the loading of the IOS kept on looping. I initially though it was a DRAM issue but I noticed the device created an IOMEM (Input/Output Memory) of 25% and it complains not having enough memory to run the IOS code.

Readonly ROMMON initialized
program load complete, entry point: 0x8000f000, size: 0xcb80
program load complete, entry point: 0x8000f000, size: 0xcb80

program load complete, entry point: 0x8000f000, size: 0x26a6e08
Self decompressing the image :

##################################################################################################################

############################################################################################## [OK]

IOMEM set to: 25
25 percent IO memory configuration is too large. Decreasing to 24117248 bytes.
PMem allocated: 110100480 bytes

              Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

           cisco Systems, Inc.
           170 West Tasman Drive
           San Jose, California 95134-1706



Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(24)T2, RELEASE SOFTWARE (fc2)
Technical Support: http://splashurl.com/m6n5s3d
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 19-Oct-09 16:11 by prod_rel_team


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://splashurl.com/lc8pd9c

If you require further assistance please contact us by sending email to
export@cisco.com.

Installed image archive
Cisco 1841 (revision 7.0) with 107520K/23552K bytes of memory.
Processor board ID FHK112717FB
2 FastEthernet interfaces
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
62720K bytes of ATA CompactFlash (Read/Write)

SYSTEM INIT: INSUFFICIENT MEMORY TO BOOT THE IMAGE!



%Software-forced reload


 15:27:29 UTC Sat Nov 16 2013: Breakpoint exception, CPU signal 23, PC = 0x60673B88



--------------------------------------------------------------------
   Possible software fault. Upon reccurence,  please collect
   crashinfo, "show tech" and contact Cisco Technical Support.
--------------------------------------------------------------------


-Traceback= 0x6066C2C8z 0x6066A794z 0x602B310Cz 0x602D21A8z 0x60F88B94z 0x60FAF288z 0x60FAF7C4z 0x60FAF8D0z

0x60FAF97Cz 0x614C1C98z 0x614BBD8Cz 0x614B3D44z 0x614BEF40z 0x614BF0D0z 0x614BF158z 0x60F4AE78z
$0 : 00000000, AT : 64B50000, v0 : 00000000, v1 : 00000000
a0 : 00000000, a1 : 635C860C, a2 : 00000000, a3 : 635D0000
t0 : 64C83DE0, t1 : 64E60000, t2 : 60679488, t3 : 64B49184
t4 : 60679488, t5 : 6545CD48, t6 : 3401FF01, t7 : 3401FF00
s0 : 00000000, s1 : 00000000, s2 : 646D0000, s3 : 64790000
s4 : 00000000, s5 : 00000000, s6 : 00000000, s7 : 6346E6DC
t8 : 00000000, t9 : 64E60000, k0 : 3041E801, k1 : 00100000
gp : 64B50F20, sp : 6545C788, s8 : 654971E4, ra : 60672054
EPC  : 60673B88, ErrorEPC : BFC05FDC, SREG     : 3401FF03
MDLO : 0000002E, MDHI     : 00000000, BadVaddr : FE804254
TEXT_START : 0x600171C0
DATA_START : 0x632078C0
Cause 00000024 (Code 0x9): Breakpoint exception

Writing crashinfo to flash:crashinfo_20131116-152729

 15:27:29 UTC Sat Nov 16 2013: Breakpoint exception, CPU signal 23, PC = 0x60673B88



--------------------------------------------------------------------
   Possible software fault. Upon reccurence,  please collect
   crashinfo, "show tech" and contact Cisco Technical Support.
--------------------------------------------------------------------


-Traceback= 0x6066C2C8z 0x6066A794z 0x602B310Cz 0x602D21A8z 0x60F88B94z 0x60FAF288z 0x60FAF7C4z 0x60FAF8D0z

0x60FAF97Cz 0x614C1C98z 0x614BBD8Cz 0x614B3D44z 0x614BEF40z 0x614BF0D0z 0x614BF158z 0x60F4AE78z
$0 : 00000000, AT : 64B50000, v0 : 00000000, v1 : 00000000
a0 : 00000000, a1 : 635C860C, a2 : 00000000, a3 : 635D0000
t0 : 64C83DE0, t1 : 64E60000, t2 : 60679488, t3 : 64B49184
t4 : 60679488, t5 : 6545CD48, t6 : 3401FF01, t7 : 3401FF00
s0 : 00000000, s1 : 00000000, s2 : 646D0000, s3 : 64790000
s4 : 00000000, s5 : 00000000, s6 : 00000000, s7 : 6346E6DC
t8 : 00000000, t9 : 64E60000, k0 : 3041E801, k1 : 00100000
gp : 64B50F20, sp : 6545C788, s8 : 654971E4, ra : 60672054
EPC  : 60673B88, ErrorEPC : BFC05FDC, SREG     : 3401FF03
MDLO : 0000002E, MDHI     : 00000000, BadVaddr : FE804254
TEXT_START : 0x600171C0
DATA_START : 0x632078C0
Cause 00000024 (Code 0x9): Breakpoint exception

-Traceback= 0x6066C2C8z 0x6066A794z 0x602B310Cz 0x602D21A8z 0x60F88B94z 0x60FAF288z 0x60FAF7C4z 0x60FAF8D0z

0x60FAF97Cz 0x614C1C98z 0x614BBD8Cz 0x614B3D44z 0x614BEF40z 0x614BF0D0z 0x614BF158z 0x60F4AE78z


=== Flushing messages (15:27:30 UTC Sat Nov 16 2013) ===

Queued messages:
*Nov 16 15:27:30.699: %SYS-3-LOGGER_FLUSHING: System pausing to ensure console debugging output.

*Nov 16 15:27:25.591: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0  State changed to: Initialized
*Nov 16 15:27:25.595: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0  State changed to: Enabled
*Nov 16 15:27:28.223: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
*Nov 16 15:27:28.823: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
*Nov 16 15:27:28.875: %SYS-2-MALLOCFAIL: Memory allocation of 32768 bytes failed from 0x602D9A60, alignment 0
Pool: Processor  Free: 34708  Cause: Memory fragmentation
Alternate Pool: None  Free: 0  Cause: No Alternate pool
 -Process= "Init", ipl= 0, pid= 3,  -Traceback= 0x6029C4C8z 0x602B310Cz 0x602D21A8z 0x60F88B94z 0x60FAF288z

0x60FAF7C4z 0x60FAF8D0z 0x60FAF97Cz 0x614C1C98z 0x614BBD8Cz 0x614B3D44z 0x614BEF40z 0x614BF0D0z 0x614BF158z

0x60F4AE78z 0x60F4AEC4z
*Nov 16 15:27:30.059: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
No warm reboot Storage
*** System received a Software forced crash ***
signal= 0x17, code= 0x24, context= 0x64e60db0
PC = 0x606882ec, Cause = 0x20, Status Reg = 0x3401c102


The router is unable to run normally even with a simple configuration of a hostname and failed to allocate a memory. I tried swapping with another 64 MB CF card and also tried to reformat but the global config command default memory-size iomem resolved this issue.

Router(config)#hostname ROUTER
ROUTER(config)#end
ROUTER#write memory
Building configuration...

*Nov 16 15:43:14.887: %SYS-5-CONFIG_I: Configured from console by console[OK]
ROUTER#
*Nov 16 15:43:15.783: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x602DE440, alignment 0
Pool: Processor  Free: 147748  Cause: Memory fragmentation
Alternate Pool: None  Free: 0  Cause: No Alternate pool
 -Process= "Exec", ipl= 0, pid= 3,  -Traceback= 0x6029C4C8z 0x602B310Cz 0x602D21A8z 0x61B53664z 0x61B56F1Cz 0x61B875D8z 0x6041EF08z 0x60F86868z 0x60F4B878z 0x60F4C188z 0x60FAD35Cz 0x60F8B194z 0x60FB1214z 0x625BB1BCz 0x625BB1A0z
ROUTER#show run | include host
hostname ROUTER
ROUTER#
*Nov 16 15:43:49.655: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x602DE440, alignment 0
Pool: Processor  Free: 153604  Cause: Memory fragmentation
Alternate Pool: None  Free: 0  Cause: No Alternate pool
 -Process= "Exec", ipl= 0, pid= 3,  -Traceback= 0x6029C4C8z 0x602B310Cz 0x602D21A8z 0x61B56948z 0x61B875C0z

0x6041EF08z 0x60F86868z 0x60F4B878z 0x60F4BD14z 0x60FACC94z 0x60F8B194z 0x60FB1214z 0x625BB1BCz 0x625BB1A0z
64012288 bytes total (64012288 bytes free)

Router#format flash:
Format operation may take a while. Continue? [confirm]
Format operation will destroy all data in "flash:".  Continue? [confirm]
Writing Monlib sectors....
Monlib write complete

Format: All system sectors written. OK...

Format: Total sectors in formatted partition: 125408
Format: Total bytes in formatted partition: 64208896
Format: Operation completed successfully.

Format of flash: complete

Router(config)#default memory-size iomem    // THE COMMAND WORKS LIKE A CHARM
Smart-init will be enabled upon reload.
Router(config)#do reload

System configuration has been modified. Save? [yes/no]: yes
Building configuration...

*Nov 17 14:49:23.743: %SYS-2-MALLOCFAIL: Memory allocation of 32768 bytes failed from 0x602DA974, alignment 0
Pool: Processor  Free: 160464  Cause: Memory fragmentation
Alternate Pool: None  Free: 0  Cause: No Alternate pool
 -Process= "Exec", ipl= 0, pid= 3,  -Traceback= 0x6029C4C8z 0x602B9CF8z 0x602D217Cz 0x60F86AFCz 0x60F86B74z 0x60F86C0Cz 0x60416178z 0x60F8EBA0z 0x60420CE8z 0x60F86868z 0x60F4B878z 0x60F4C188z 0x60FAD35Cz 0x60FB2D5Cz 0x60F8B194z 0x60F8BDD0z[OK]
Proceed with reload? [confirm]

*Nov 17 14:49:29.827: %SYS-5-RELOAD: Reload requested  by console. Reload Reason: Reload Command.

<OUTPUT TRUNCATED>

Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#hostname ROUTER
ROUTER(config)#^Z
*Nov 17 14:58:17.211: %SYS-5-CONFIG_I: Configured from console by console
ROUTER#show run | include host
hostname ROUTER