Downgrade ISR1100-4G Viptela OS

[Wesoley]

I am trying to downgrade a Cisco ISR ISR1100-4G router running Viptela OS  19.2.3. to Classic IOS-XE. There is this guide https://www.cisco.com/c/en/us/support/docs/routers/xe-sd-wan-routers/214519-how-to-downgrade-router-running-ios-xr-s.pdf but the command config-transaction is not available on the vedge. Any tips or thoughts would be sincerely appreciated.

[balaji.bandi]

i have not come across any vedge to cedge command transition, you need to manually config I guess here.

[Wesoley]

Hi @balaji.bandi when you say manually configure it, what are you implying? I tried changing the image but it does not work.

[balaji.bandi]

Are you looking to Viptella to IOS XE SD-WAN conversion: look at the below :

https://www.youtube.com/watch?v=OTfaVUjilwc

or if  you looking for no SD-WAN - Classic Image as you intended to go then your document should work : ( you need to get on to common as mentioned I the document)

https://www.cisco.com/c/en/us/support/docs/routers/xe-sd-wan-routers/214519-how-to-downgrade-router-running-ios-xr-s.html

[Wesoley]

Yes, that's what I'm looking to do. I saw the video already but the vedge has not been connected to vBond to onboard. However, I copied the image via winscp but it says the image is not supported as it's not a tar.

I also read the document before but the pnpa service discovery stop command does not work. Thanks for your feedback. Will deep a bit more myself.

[balaji.bandi]

From command level can you post show version output.

[Wesoley]

vedge# show software

VERSION ACTIVE DEFAULT PREVIOUS CONFIRMED TIMESTAMP
--------------------------------------------------------------------------
19.2.3 true true - - 2021-10-18T05:27:46-00:00

vedge# show version
19.2.3
vedge#

vedge# request software install /home/admin/isr1100be-universalk9.17.04.01a.SPA.bin
ERROR: install: Image not supported
vedge#

[Wesoley · Accepted solution]

I decided to upgrade to 20.4.1 and was able to install the image - 

vedge# request software install /home/admin/isr1100be-universalk9.17.04.01a.SPA.bin

vedge# request software activate ?
Description: Display software versions
Possible completions:
17.04.01a.0.211
19.2.3
20.4.1
vedge# request software activate 17.04.01a.0.211
This will reboot the node with the activated version.
Are you sure you want to proceed? [yes,NO] yes
!!! Migrating from vedge 20.4.1 to XE 17.04.01a.0.211. Disk partitions,data and configs will be lost !!!

This document provided some clarity and answers - https://community.cisco.com/t5/networking-documents/community-live-slides-nbsp-isr1100x-4g-and-isr1100x-6g-platform/ta-p/4311661

[balaji.bandi]

Glad you able to resolve the issue, thank you for sharing your outcome.