ios-xe rollback commands?

[baselzind]

i have noticed that when trying to install a ios-xe on the new switches , at the end of the "software install file flash:X rollback X" there is a set of rollback commands , seems like a safety feature incase of a os install failure but i cant understand how they work or find any document that explains them?

[Pradeep Singh]

Hi,

Software rollback is supported only when the switch is running in “Install” mode. Software rollback is functional only when at least one rollback package with the file name packages.conf.00- is present.

Please find below document which explain well for functionality of software rollback cmd:-

http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series-switches/deployment_guide_c07-727067.pdf

HTH,

Pradeep

[baselzind]

the document have no mention of the "software install file flash:X rollback X" which are a set of commands 

[Pradeep Singh]

On what's model of device you are checking?

[baselzind]

WS-C3850-24T

[Pradeep Singh]

Hello,

I have checked on WS-C3850-24T running on 3.7.4 but not getting above mentioned set of cmd .

Could you please confirm mode & IOS version on which switch is running?

[baselzind]

the ios is 03.02.03.SE and the syntax is as following:

software install file flash:/cat3k_caa-base.SPA.03.02.03.SE.pkg new ?
auto-rollback - Auto-rollback time
force - Proceed with installation without performing peer package compatibility checks
on-reboot - Suppress reload prompt and do not reload after installation
provisioning-file - Provisioning file to use for installation
switch - Switch(es) where install operation is performed. Default is all switches
verbose - Verbose output