ISR 4451 Denali vs Everest vs Fuji

[JLee@2018]

I have an ISR 4451 with IOS XE 03.15.01c.S and IOS 15.5(2) when doing a "show version":

1. Which is more important to me? The IOS XE or the IOS? After reading several posts I'm not clear as to the difference.

2. Do I have Fuji, Denali, Everest or something else? And are these names related to the IOS or IOS XE?

Thank you

[Seb Rupik]

Hi there,

The two numbers you see for IOS-XE and IOS in sh ver represent the feature parity of the software releases.

As for the names, they are the IOS-XE 16.x codenames given to the minor releases, eg:

16.3.x Denali

16.6.x Everest

cheers,

Seb.

[JLee@2018]

Thank you for the info.

[Joseph W. Doherty]

#1 I would say the IOS version is more important.

What's the difference? XE is an OS (somewhat like VM) that runs an IOS as a process.

[JLee@2018]

Thank you

[clive.fulton]

So many releases and so many different features. Its difficult to know which to choose in terms of simplicity and robustness.