Hello edimusrex,

I have no experience with the module but I can try to propose some ideas, as I have played in the past with similar modules.

I do not see in the module documentation username => $user, password => $password, I assume that it should be like $user, $password

From the module documentation error, try something like this (untested):

my $session = Net::SSH2::Cisco->new(host => $host);
$session->login(username => $user, password => $password) or $session-
+>errmsg; # "die" (the default)
[download]

It should give you more information if you can login or not. From the error message that you posted Net::SSH2 error -18:LIBSSH2_ERROR_PUBLICKEY_UNRECOGNIZED....etc it looks like you are failing to connect with the username and password that you are trying to pass and it is assuming the protocol that you are using SSH keys.

I found a similar question Using Net::SSH2::Cisco and the user is connecting like this:

$sok->login(Name =>$user,
          Password =>$lp,
         );
[download]

Give it a try, and post your solution if you resolve it after.

Update: From the documentation Net::SSH2::Cisco/METHODS/enable:

$ok = $obj->enable(
        [Name => $name,]
        [Password => $password,]
        [Level => $level,]
    );
[download]

So yes you should pass your username and password like this.

Hope this helps, BR.