Cisco IOS Resilient Configuration
In IOS Version 12.3T, a new affection was alien to advance at all times a defended alive archetype of the router IOS angel the startup configuration. In the accident of a arrangement blow due to a accommodation or any added disaster, the aftermost affair to worry
about is award a accurate archetype of the IOS angel and the agreement file. Time spent on convalescent from such a accident is
critical, and accelerated accretion is of absolute priority. The Cisco IOS Resilient Agreement affection enables a router to defended a
working archetype of the active angel and agreement so that those files can bear awful attempts to abolish the contents
of assiduous accumulator (NVRAM and flash). These defended files are adequate by the IFS (IOS Book System) and cannot be removed
by the user. This set of IOS angel and router active agreement is referred to as the primary bootset .
To accredit the IOS Resilient Agreement feature, use the defended boot-image command from the all-around agreement approach accredit IOS angel resilience. Use the defended boot-config command to abundance a defended archetype of the primary bootset in the
persistent storage.
The dir command will not account these anchored files, because the IFS bouncer the anchored files from actuality listed in a agenda output.
There is no brake in the ROM adviser (ROMMON) mode, and files can be listed and acclimated to cossack from the anchored files. affectation the IOS animation agreement and the primary bootset filename, use the appearance defended bootset command to verify
archive existence.