Cisco 9400 with dual supervisor IOS Downgrade

[KarthickRaja23]

I am having cisco 9407R with dual supervisor mode. Last update i did with issu upgrade.. Now i would like to downgrade the IOS, but i am unable to do it.

Current version: 17.6.1

Target version: 17.3.4

As rollback is not possible, Kindly let me know alternate way.

When checked the ISSU is showing in Progress state. Tried to abort and it is failing. Also tried rebooting the device, still same.

install abort issu
install_abort: START Tue Oct 11 15:30:59 UTC 2022

NOTE: Going to start Abort ISSU install process

-- Starting preparation for software rollback ---
FAILED: No rollback file found for /bootflash/packages.conf
[1] Finished abort_active on R0
abort_active: Passed on []. Failed on [R0]
Finished abort_active

FAILED: Deactivation of active is failed
FAILED: install_abort exit(1) Tue Oct 11 15:31:43 UTC 2022

Also tried to do normal install upgrade and that too failed.

install add file flash:cat9k_iosxe.17.03.04.SPA.bin activate commit

install_add_activate_commit: START Tue Oct 11 15:32:56 UTC 2022

FAILED: install_add_activate_commit : Install ISSU in progress. Abort the ISSU upgrade to proceed

show issu state detail
Current ISSU Status: In Progress
Previous ISSU Operation: Successful
=======================================================
System Check Status
-------------------------------------------------------
Platform ISSU Support Yes
Standby Online Yes
Autoboot Enabled Yes
SSO Mode No
Install Boot Yes
Valid Boot Media Yes
Operational Mode HA-STANDALONE
=======================================================
Operation type: Step-by-step ISSU
Install type : Image installation using ISSU
Current state : Crash detected state
Last operation: Abort

[balaji.bandi]

Follow downgrade proceedure :

Downgrading in Install Mode

Follow these instructions to downgrade from one release to another, in install mode. To perform a software image downgrade, you must be booted into IOS via boot flash:packages.conf .

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/17-6/release_notes/ol-17-6-9400.html#task_shs_zpd_kmb

[KarthickRaja23]

i tried this it is not working as issu is in progress .

Also issu abort is not working.

[balaji.bandi]

post complete logs and steps you follow for us to understand  issue.

[Leo Laohoo]

---

@KarthickRaja23 wrote:
i tried this it is not working as issu is in progress .

---

Never, ever believe in the hype about ISSU &/or FSU/eFSU.  
ISSU &/or FSU/eFSU usually work in "corner cases" like labs or demos.  

ISSU process has "crashed" and locked up.  The supervisor cards will need to be rebooted. 

Once the supervisor cards have returned, upgrade the firmware using the CLI: 

install add file bootflash:cat9k_iosxe.17.03.05.SPA.bin activate commit 

This script will perform the following tasks:

1. Copy the firmware file from the Primary supervisor card to the Secondary supervisor card. 
2. Extract all the package files into the Primary
3. Extract all the package files into the Secondary
4. Change the packages.conf file to the new version
5. Reboot both chassis simultaneously.

Do not forget to read the Release Notes!

[KarthickRaja23]

Thanks Leo, for the detailed step.. Kindly let me know if we have any commands for reloading the supervisors remotely or let me know if we need to reboot the supervisor manually.

[Leo Laohoo]

Use the "reload" command.

[Reza Sharifi]

SSO Mode No

In order for sup redundancy to work correctly, the sups must be configured in SSO mode.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-8/command_reference/b_168_9400_cr/b_168_9400_cr_chapter_011.html#wp2770062291

HTH

[KarthickRaja23]

Hi Reza,

I am seeing the SSO is established.

show redundancy
Redundant System Information :
------------------------------
Available system uptime = 11 hours, 31 minutes
Switchovers system experienced = 0
Standby failures = 0
Last switchover reason = none

Hardware Mode = Duplex
Configured Redundancy Mode = sso
Operating Redundancy Mode = sso
Maintenance Mode = Disabled
Communications = Up

Current Processor Information :