cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2787
Views
20
Helpful
34
Replies

Losing the IOS

jfeo
Level 1
Level 1

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.

34 Replies 34

jfeo
Level 1
Level 1

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

I'd check the config register of each of the 3550.  Someone may be pulling a prank.

checked that we back up configs and save a show version

anybody with any Ideas what could be causing this

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

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

Can you post the output of    dir all

Mike

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                      startup-config
  370  ----        1532                      private-config
    1  -rw-           0                      ifIndex-table

393216 bytes total (378650 bytes free)
Directory of system:/

    2  dr-x           0                      memory
    1  -rw-       11889                      running-config

No space information available

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

Mike

the "d" means directory.

Jon

the "d" means directory.

No.  It means I need a drink.  A stiff one!

Sorry....I did not mean delete...I meant directory. What that means it the IOS is in a directory.

Mike

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

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

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: