Whats the difference between V01 and V03 on the controllers and access points

[Pauljbl]

On Cisco controllers say the 2504 some have v01 and some go up to v09 is this just hardware revisions and no differences in functionality

[Leo Laohoo]

No functional differences.

[luis_cordova]

Hi @Pauljbl 

I think this discussion can help you:

https://community.cisco.com/t5/routing/2821-version-id-v03-and-v01/td-p/1332776

On occasion, some IOSs are compatible with more recent versions, but I have seen the latest release note of your device and no differences are indicated by the version:

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn85mr5.html

Regards

[Pauljbl]

Are higher version numbers better?

Do they have better hardware?

[Leo Laohoo]

Higher versions means different internal components.
Won't make any difference about the higher hardware version numbers.

[Pauljbl]

Do you know why they change the components and make different versions?

[pieterh]

sometimes a "new" HW revision is simply an advance in chip technology.

chips are fabricated with higher integration or less power consumption because of the production technique used.

sometimes multiple chips are integrated in a single new chip, which results in simpeler printed circuit board en less components to place during production.

in many if these cases there is no difference in functionality.

[luis_cordova · Accepted solution]

Hi @Pauljbl 

This is what I could find:

https://www.cisco.com/c/en/us/products/unique-device-identifier-udi.html

Regards