05-03-2010 07:42 AM - edited 03-06-2019 10:54 AM
I have alot of cisco 3550 switches out at different sites. So far we have been rebooting all switches and when they power back up the IOS is missing.
I end up using xmodem to get them working.
What could cause the IOS to be lost.
05-03-2010 07:53 AM
Let me add to this note I may have 6 3550 and 2 3560 the 3560 never lose the IOS and 3 out of say 6 3550 loose the IOS
05-03-2010 03:28 PM
I'd check the config register of each of the 3550. Someone may be pulling a prank.
05-03-2010 05:01 PM
checked that we back up configs and save a show version
05-04-2010 09:47 AM
anybody with any Ideas what could be causing this
05-04-2010 11:37 AM
When you say you are losing the IOS do you mean the actual IOS file or the configuration? Can you post the config-register it should be 0X2102. Also what IOS version are you running? When you issue a write mem do you see any errors?
Mike
05-04-2010 11:42 AM
cisco 3550 switch
Losing the IOS I have to xmodem the switch.
Not sure if you can change a config-register on a switch
Version 12.1(22)EA4
Configuration register is 0x10F
05-04-2010 11:47 AM
Can you post the output of dir all
Mike
05-04-2010 11:52 AM
I can you give you one from a switch that after a reboot it came back
This switch was done there other day 1 failed this one didn't
switch10#dir all
Directory of flash:/
2 -rwx 346 Feb 28 1993 19:07:10 -05:00 system_env_vars
3 -rwx 556 Feb 28 1993 19:00:54 -05:00 vlan.dat
6 drwx 192 Feb 28 1993 19:06:57 -05:00 c3550-i5k2l2q3-mz.121-22.EA4
8 -rwx 0 Feb 28 1993 19:07:09 -05:00 env_vars
5 -rwx 11958 Jan 05 2010 01:20:35 -05:00 config.text
9 -rwx 1532 Jan 05 2010 01:20:35 -05:00 private-config.text
10 -rwx 1048 Jan 05 2010 01:20:35 -05:00 multiple-fs
15998976 bytes total (9503744 bytes free)
Directory of zflash:/
2 -rwx 346 Feb 28 1993 19:07:10 -05:00 system_env_vars
3 -rwx 556 Feb 28 1993 19:00:54 -05:00 vlan.dat
6 drwx 192 Feb 28 1993 19:06:57 -05:00 c3550-i5k2l2q3-mz.121-22.EA4
8 -rwx 0 Feb 28 1993 19:07:09 -05:00 env_vars
5 -rwx 11958 Jan 05 2010 01:20:35 -05:00 config.text
9 -rwx 1532 Jan 05 2010 01:20:35 -05:00 private-config.text
10 -rwx 1048 Jan 05 2010 01:20:35 -05:00 multiple-fs
15998976 bytes total (9503744 bytes free)
Directory of nvram:/
369 -rw- 11958
370 ---- 1532
1 -rw- 0
393216 bytes total (378650 bytes free)
Directory of system:/
2 dr-x 0
1 -rw- 11889
No space information available
05-04-2010 11:58 AM
It looks like the files are set to delete on reload....notice the drwx i believe the d means delete. I am not overly firmilar on how to change that but I am looking it up now.
Mike
05-04-2010 12:00 PM
Mike
the "d" means directory.
Jon
05-04-2010 03:06 PM
the "d" means directory.
No. It means I need a drink. A stiff one!05-04-2010 12:01 PM
Sorry....I did not mean delete...I meant directory. What that means it the IOS is in a directory.
Mike
05-04-2010 12:04 PM
burleyman wrote:
Sorry....I did not mean delete...I meant directory. What that means it the IOS is in a directory.
Mike
Mike
It's when you have multiple other files with the actual IOS image such as the files needed for web management of the switch etc.
Jon
05-04-2010 12:10 PM
Thanks Jon....I actually did know that....I think I am still in vacation mode.....
I have had routers lose the running config due to a bug just resently but not the actual IOS.....
Mike
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