08-29-2008 01:52 AM - edited 03-06-2019 01:04 AM
Hi
i have 3745 cisco router, it was operational for more than a 3 years.
now whenever i reboot it the boot gos into rommon, even i have a right configuration register value 0x2102 and the image on the internal flash is working .
to make it work i have to issue the boot command from the rommon and reload.
even the same command i executed from the config mode after reboot .
any help would be highly appricated .
thanks
08-29-2008 01:59 AM
1.Have you done any changes ?
2.Why you had rebooted it ?
3.attach sh run which will include boot-start-marker & booot-end-marker
08-30-2008 06:08 AM
hey thanks for the quick reply
i did no changes and i reboot it because it was not responding, here are that part of the sh run
"
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname MOCY
!
boot-start-marker
boot-end-marker
!
enable secret 5
!
network-clock-participate wic 0
network-clock-participate aim 0
no aaa new-model
ip subnet-zero
ip cef
!
"
nothing is defined between the boot start and end markers even i issued the boot command but after the reboot that command disappear .
08-30-2008 07:48 AM
bassam
Perhaps you would also post the output of show version and of show flash. This might have some information that would help us to identify the issue.
HTH
Rick
08-30-2008 10:37 PM
here are the required show
MOCY#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 3700 Software (C3745-ADVENTERPRISEK9-M), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 17:42 by dchih
ROM: System Bootstrap, Version 12.2(8r)T2, RELEASE SOFTWARE (fc1)
RAK_MOCY uptime is 12 minutes
System returned to ROM by reload
System image file is "flash:c3745-adventerprisek9-mz.123-26.bin"
cisco 3745 (R7000) processor (revision 2.0) with 248832K/13312K bytes of memory.
Processor board ID JHY0835K3UY
R7000 CPU at 350MHz, Implementation 39, Rev 3.3, 256KB L2, 2048KB L3 Cache
Channelized E1, Version 1.0.
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Primary Rate ISDN software, Version 1.1.
2 FastEthernet/IEEE 802.3 interface(s)
4 Serial network interface(s)
1 ATM network interface(s)
1 Channelized E1/PRI port(s)
1 ATM/Voice AIM(s)
DRAM configuration is 64 bits wide with parity disabled.
151K bytes of non-volatile configuration memory.
31168K bytes of ATA System CompactFlash (Read/Write)
Configuration register is 0x2102
------------------ show flash: all ------------------
-#- --length-- -----date/time------ path
1 252 Mar 1 1993 00:05:38 +00:00 RAQ-Pool
2 24577560 Mar 1 1993 00:13:56 +00:00 c3745-adventerprisek9-mz.123-26.bin
7151616 bytes available (24584192 bytes used)
******** ATA Flash Card Geometry/Format Info ********
ATA CARD GEOMETRY
Number of Heads: 4
Number of Cylinders 487
Sectors per Cylinder 32
Sector Size 512
Total Sectors 62336
ATA CARD FORMAT
Number of FAT Sectors 31
Sectors Per Cluster 8
Number of Clusters 7748
Number of Data Sectors 62176
Base Root Sector 155
Base FAT Sector 93
Base Data Sector 187
thanx
Bassam
08-31-2008 03:49 AM
Bassam
Thank you for the additional information. I agree that it looks like the router should boot ok and that the image looks ok. Since it did have a problem with booting I suggest that you try this:
config t
boot system flash:c3745-adventerprisek9-mz.123-26.bin
end
copy running-config startup-config
Give this a try and let us know if it helps the router to boot without problems.
HTH
Rick
08-31-2008 10:50 AM
Hi Rick
i tried that but after i reboot the
boot system flash:c3745-adventerprisek9-mz.123-26.bin
disappear from the configuration file and the router goes to rommon, do you think it is a hardware problem and in case which part you think is damaged and how can we make sure of that .
08-31-2008 06:43 PM
Bassam
After you have done the copy running-config startup-config, if you do a show startup-config do you see the boot system flash command in the config file?
It does begin to sound a bit more like this could be a hardware problem. Is this router covered under an active maintenance contract so that you could open a case with TAC? If so I would suggest that this might be the direction to go.
HTH
Rick
09-05-2008 07:05 AM
i will open a case with cisco TAC.
thanks a lot for your help
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