IOS query

[knaik99]

When we add any IOS at switch then that IOS is universal ,right?

after that we add IP base or IP services licence right?

so that we can upgrade or downgrade IOS to IP base or IP services?

Please let me know the process for IOS installation.

[pieterh]

basically YES, the universal image can be used for all licenses

But  I don't think Cisco will still sell you a license for this product

The Cisco Catalyst 3000 Series Switches has been retired and is no longer supported.

are you sure you still want to upgrade IOS?

Read the release notes, like in this document for the upgrade procedure

[Deepak Kumar]

Hi,

When we add any IOS at switch then that IOS is universal ,right?

Yes

after that we add IP base or IP services licence right?

Yes

so that we can upgrade or downgrade IOS to IP base or IP services?

Yes

https://networklessons.com/cisco/ccna-routing-switching-icnd1-100-105/upgrade-cisco-ios-image