C9407R IOS-XE upgrade question

[gjsnow]

I was looking through the downloads section and noticed that IOS-XE 17.12.4 is now suggested for install on the 9407R Supervisor Engine-1.

I also noticed that in the software on chassis section it only suggests 17.9.5.

Anyone know why this is or what the difference in terminology is?

When I upgraded to 17.9.4 there is no differentiation anywhere between the SUP and Software on Chassis. Aren't they the same thing?

[balaji.bandi]

For production i still suggest 17.9.5 and stable working, But if you enocuntered any big and TAC suggesting 17.12.X  you can go for that verision, if not i would not suggest you to become Cisco Lab device to engage with TAC for the issues.

[Leo Laohoo]

17.3.X, 17.6.X 17.9.X  are not stable releases. 

17.12.3 seems to be a lot more stable.  (Currently testing 17.12.4.)

[gjsnow]

17.9.X isn't stable?

Why is it the suggested version?

A couple months back 17.9.4a was the suggested version.

Also, just wondering why cisco has 2 different suggested version for the 9407R one for the software on chassis and one for the supervisor.

Thanks

[Leo Laohoo]

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@gjsnow wrote:
17.9.X isn't stable?

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I would never use 17.9.X in a core network much alone a chassis like a 9400/9600.  

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@gjsnow wrote:
A couple months back 17.9.4a was the suggested version.

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A "star" release is not the same as a "Safe Harbor" release.  A "star" release is just for show. 

I will always pick a version if it was "Safe Harbor" but I would never pick a version just because it is a "star" release because I have witnessed several "star" releases which trigger bugs and crashes on platforms without any config.  

[balaji.bandi]

My view :

Different engineers have different experience in the version of CODE, Some have good experience in the latest code cisco released,. some have very bad experience  - these all based on what kind of environment and what features they using.

Only cisco BU/TAC have visibility what kind of issue they are logged based on the version. - i believe based on that condition they going to mention what STAR is - this is my view again.

But personally i always avoid Latest Code running in production environment with critical services.