Re: Extending the schema: What about OIDs?

["Umesha Balasubramaniam" <umeshajb@goshen.edu>]

If you come up with any attributes or objectclasses in practice you 
should use your own OID. Even if you are extending an existing schema 
and even if it works.
-Umesh

Venkataraman, Jeeva wrote:

> Adam,
> As we are using the core schema and extending it few more attributes, do we
> need to get OID specifically for these additional attributes? Is that what
> you are saying?
> My understanding is that we need to get an OID if the schema is totally new
> and independent of core schema. Correct me if I am wrong.
>
> Thanks,
>
> Jeeva Venkataraman
> Software Engineer, MediaOcean.
> In pursuit of real freedom we have yet to gain much more than we have won.
> We have not begun to gain freedom from error, the freedom that comes from
> the right reason. We have not begun to gain freedom from hate, the freedom
> that is born of love. Thats the true meaning of our wars.
> - FORTUNE mag Feb 1951 Issue.
>
> -----Original Message-----
> From: Adam Williams6 [mailto:awilliam@whitemice.org] 
> Sent: Tuesday, March 12, 2002 1:22 PM
> To: Venkataraman, Jeeva
> Cc: openldap-software@OpenLDAP.org
> Subject: Re: Extending the schema: What about OIDs?
>
> > We have created a local schema file which defines the attributes and object
> > classes that are specific to us.
> > Our slapd.conf includes core.schema and our local schema file.
> > Everything works well this way.
> > Having read about OIDs, I have clarification on defining the ids for the
> all
>
> > the entries.
> > The OIDs for all the attributes/object classes continue to be the same in
> > the core.schema.
>
> They are defined by the same authority.  The OID should remain the same.
>
> > In the local schema we have just added new ids, ids just extending from
> > similar ones from core schema.
> > ( for instance, defined a 'myattribute' with a id 1.4.1)  
> > This works well on our local server. 
>
> As well it should.
>
> > What is the need to obtain a fully registered OID?
>
> Go to IANA's web site.
>
> > Even if we obtain a OID,  
>
> "IF"!  If you define schema you need your *OWN* OID.
>
> > then do we need to change the core schema as well?
> > Or do we need to change only the local schema attributes?
>
> No, do not adjust existing schema,  those are the OIDs of that schema,  
> defined by people with authority to use that OID.
>
> I have a section on OIDs in my LDAP presentation - 
> ftp://kalamazoolinux.org/pub/pdf/ldapv3.pdf