Problem getting started with SNMP

[Colin Law]

On Wed, 7 Apr 2021 at 21:49, Colin Law <clanlaw at gmail.com> wrote:
>
> I am trying to learn about SNMP.
> ...
> The response is
> Error in packet.
> Reason: wrongLength (The set value has an illegal length from what the
> agent expects)
> Failed object: SNMP-USER-BASED-SM-MIB::usmUserOwnPrivKeyChange.".....)D.'..m`...."."demo"
>

No suggestions at all?

I am able to read data using SNMP in v1 mode, but I would like to use
v3 if possible.

Colin