Recommended version for C9500 and C9200

[ruch]

Hi,

I have Cisco C9500-40X-A, C9200L-24T-4X-E and C9200L-48T-4X-E. I need to upgrade the firmware versions of these switches. and im having trouble to find the most suitable IOS version to upgrade. 

Appreciate if you all can help to get the recommended version

IOS version is  17.9

Thanks

[Leo Laohoo]

Try 17.9.4a.

[M02@rt37 · Accepted solution]

Hello @ruch 

On Cisco Download website, when you select your model you will see cisco suggested release based on software quality, stability and longevity, marked with a yellow star.

As example for your model C9500-40X-A : 

 

[ruch]

I'm having difficulty to find out the differences between the bengaluru, Cupertino and Gilbart. 

[Leo Laohoo]

---

@ruch wrote:
I'm having difficulty to find out the differences between the bengaluru, Cupertino and Gilbart. 

---

The "names" are irrelevant.  They are there to confuse people.  

[DanielP211]

Hello!

Because of the latest http/https critical bug on the IOS-XE i would definitely go with 17.9.4a that is also cisco recommended.

BR

[Ruben Cocheno]

@DanielP211 

I would go with 17.9.4a