Strange behavior scp-to for Cisco devices

[lweddewer]

Hello,

I've seen some strange behavior when using the scp-to against Cisco IOS devices:

NSO Version	NED	Device	How?	File transfered	Result
4.7.4.3	6.36.2	CSR1000v	Using CLI	Yes	Session hangs until interrupted with CTRL + C
4.7.4.3	6.36.2	ISR4451x	Using CLI	Yes	Session hangs until interrupted with CTRL + C
4.7.4.3	6.36.2	CSR1000v	Using Python	Yes	Action Session hangs until request packages reload.
5.2.1.2	6.43.2	CSR1000v	Using CLI	Yes	Error: internal error
5.2.1.2	6.43.2	CSR1000v	using Python	Yes	Error: Python cb_action error. internal error (18): internal error
5.3	6.43.2	CSR1000v	using CLI	Yes	Action works as expected with Status OK.
5.3.0.1	6.43.2	CSR1000v	using CLI	Yes	Action works as expected with Status OK.

All tested installations  where local installations.

And in all combinations the file was transfered to the device succesfully..

I've tried to find anything in the changelog. I found some points related to scp-to/scp-from but nothing which fits exactly to the seen behavior.

Is this a kown behavior with older versions? If so is there or will there be a fix for the older version 4.7.x? 

Regards Lothar

[Andre Gustavo Albuquerque]

The underline causes for the multiple problems described in your post may be different.

It would be better if you open a TAC case and get the RCA for these problems, so you could have a precise answer for your question.

I hope I had a better answer than that, but, as you already did, I've searched the CHANGES file and found multiple changes to scp code in multiple releases. A TAC engineer would be able to assist you reproducing the problem and providing guidance on the supported releases which incorporated the fix.

Best regards