[Yum] What's the relationship between yum and rhnplugin?

[seth vidal]

On Wed, 2007-03-21 at 14:53 +0800, Bo Xie wrote:
> I know RHEL 5 uses yum and rhnplugin to access RHEL 5 RHN.
> 
> My question are:
> (1) Can I use yum+rhnplugin to access RHEL 3/4 RHN? Is there any
> difference between "RHEL 3/4 RHN repository" and "RHEL 5 repository"?
> (2) Can I use yum+rhnplugin to access RHN's counterpart 'current'
> (current.tigris.org)?
> (3) I assume 'RHEL 5 RHN' is still a 'RHN repository', not a normal
> 'yum repository' created by 'yum-arch' or 'createrepo'. I mean Red Hat
> only changes the update *client* from up2date to yum, but does not
> change the repository from RHN repository to yum repository.Am I
> right?
> 

You'd probably be better off asking on a rhel-specific list about this.
However, afaict, the rhn_plugin is just a way of authenticating to rhn
to access it as yum repository. It's simple and therefore very clever.

-sv