From: Harris, Joe F (Joe_Harris@xxxxxxxxxxxx)
Date: Fri Nov 30 2001 - 12:27:27 GMT-3
All:
There was a thread floating around a month or so ago regarding the "no
service password-recovery" command. Most people say that the command cannot
be "undone" once is has been issued and therefore should be avoided at all
costs. TAC will even inform you that you must return the router to Cisco in
order to reverse the effect of the command, however there is a simple fix
that will allow you to circumvent the effects of the command. The only down
side to reversing the command is that you need a small amount of extra
equipment in order to reverse, like new BootROM. Here is an example:
USED WITH "NO SERVICE PASSWORD-RECOVERY", WROTE THE CONFIG TO MEM & RELOADED
System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
TAC:Home:SW:IOS:Specials for info
C2600 platform with 49152 Kbytes of main memory <-Issued Break
PC = 0x8000830c, Vector = 0x500, SP = 0x82fffeb0
PASSWORD RECOVERY FUNCTIONALITY IS DISABLED
program load complete, entry point: 0x80008000, size: 0x928024
Self decompressing the image : ####################################
CHANGED BOOTROM:
System Bootstrap, Version 11.3(2)XA3, PLATFORM SPECIFIC RELEASE SOFTWARE
(fc1)
Copyright (c) 1998 by cisco Systems, Inc.
TAC:Home:SW:IOS:Specials for info
C2600 platform with 49152 Kbytes of main memory
program load complete, entry point: 0x80008000, size: 0x928024
Self decompressing the image : ##############################
!
!Reloaded Router and Attempted to enter rommon>
!
System Bootstrap, Version 11.3(2)XA3, PLATFORM SPECIFIC RELEASE SOFTWARE
(fc1)
Copyright (c) 1998 by cisco Systems, Inc.
TAC:Home:SW:IOS:Specials for info
C2600 platform with 49152 Kbytes of main memory
PC = 0xfff0a53c, Vector = 0x500, SP = 0x8000488c
monitor: command "boot" aborted due to user interrupt
rommon 1 >
-Joe
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