C3650 stuck when firmware image is discovered

Hello,

I've been trying to update my WS-C3650-48TS via FreeZTP, but it's failing. tftproot is set to the default /etc/ztp/tftproot/ and file permissions were adjusted via chmod to 777. Factory configuration template is used. I discovered following behavior:

When no update file is recognized (tftproot folder is empty), my switch successfully receives the short and long configuration templates
As soon as an update file is added to the tftproot folder and the ztp set imagefile parameter is set, my switch discovers the update file butthe ZTP process seems to get interrupted. Neither the firmware is installed, nor the configuration is pushed

I'm doing an upgrade from cat3k_aaa-universalk99.16.06.07.SPA.bin to cat3k_caa-universalk9.16.12.06.SPA.bin.

ztp configuration parameters:

ztp set suffix -confg ztp set initialfilename network-confg ztp set community secretcommunity ztp set tftproot /etc/ztp/tftproot/ ztp set imagediscoveryfile freeztp_ios_upgrade ztp set file-cache-timeout 10 ztp set imagefile cat3k_caa-universalk9.16.12.06.SPA.bin ztp set image-supression 30 ztp set delay-keystore 1000

ztp show downloads

ztp show log tail output:

root@ps-ztp:~# ztp show log tail 2021-10-13 10:16:39: Log file has been cleared 2021-10-13 10:25:32: tracking_class.report: New transfer of (freeztp_ios_upgrade) from (10.6.13.240) detected 2021-10-13 10:25:32: interceptor: Called. Checking the cache 2021-10-13 10:25:32: file_cache.get: File (freeztp_ios_upgrade) requested by (10.6.13.240) not in cache 2021-10-13 10:25:32: interceptor: Cache returned None. Running cfact.lookup procedure 2021-10-13 10:25:32: cfact.lookup: Called. Checking filename (freeztp_ios_upgrade) and IP (10.6.13.240) 2021-10-13 10:25:32: cfact.lookup: Requested filename matches the imagediscoveryfile 2021-10-13 10:25:32: cfact.lookup: #############IOS UPGRADE ABOUT TO BEGIN!!!############# 2021-10-13 10:25:32: interceptor: cfact.lookup returned (True) 2021-10-13 10:25:32: interceptor: Returning ztp_dyn_file instantiated object 2021-10-13 10:25:32: ztp_dyn_file: Instantiated as (<main.ztp_dyn_file instance at 0x7f6e71117d70>) 2021-10-13 10:25:32: cfact.request: Called with filename (freeztp_ios_upgrade) and IP (10.6.13.240) 2021-10-13 10:25:32: cfact.request: Filename (freeztp_ios_upgrade) matches the configured imagediscoveryfile 2021-10-13 10:25:32: cfact._check_supression: Called. Checking for image download supression for IP (10.6.13.240) 2021-10-13 10:25:32: cfact._check_supression: Previous session not detected within 30 seconds. 2021-10-13 10:25:32: cfact.request: Returning the value of the imagefile setting (cat3k_caa-universalk9.16.12.06.SPA.bin) 2021-10-13 10:25:32: ztp_dyn_file: File size is 38 bytes 2021-10-13 10:25:32: file_cache.store: Storing {1634113532.334158: {'ipaddr': '10.6.13.240', 'file': <main.ztp_dyn_file instance at 0x7f6e71117d70>, 'filename': 'freeztp_ios_upgrade'}} 2021-10-13 10:25:32: ztp_dyn_file.close: Called. File closing. 2021-10-13 10:25:32: interceptor: Called. Checking the cache 2021-10-13 10:25:32: file_cache.get: File (freeztp_ios_upgrade) requested by (10.6.13.240) found in cache. Checking timeout. 2021-10-13 10:25:32: file_cache.get: Cached file is still within timeout period. Resetting to 0 and returning 2021-10-13 10:25:33: tracking_class.report: New transfer of (cat3k_caa-universalk9.16.12.06.SPA.bin) from (10.6.13.240) detected 2021-10-13 10:25:42: file_cache._maintain_cache: Timing out and deleting 1634113532.33:{'ipaddr': '10.6.13.240', 'file': <main.ztp_dyn_file instance at 0x7f6e71117d70>, 'filename': 'freeztp_ios_upgrade'}

Switch CLI output (I did not press any button to cancel ZTP):

Would you like to enter the initial configuration dialog? [yes/no]: Loading freeztp_ios_upgrade from 10.6.13.30 (via Vlan1): ! [OK - 38 bytes] Press RETURN to get started! Oct 13 08:25:38.536: %SSH-5-ENABLED: SSH 1.99 has been enabled Oct 13 08:25:45.876: %AN-6-AN_ABORTED_BY_CONSOLE_INPUT: Autonomic disabled due to User intervention on console. configure 'autonomic' to enable it.

PackeTsar / freeztp

C3650 stuck when firmware image is discovered #92