[Fedora-directory-users] How interhangeable are ldap server?

[David Boreham]

Mont Rothstein wrote:

> Just to be clear, when you say "much custom code" do you mean none if 
> I am careful, or a little?  This can obviously be a big difference 
> since even testing a small number of changes against all the LDAP 
> servers we might have to talk to could be a large task.

It's a bit like the situation with RDBMS servers, but quite a bit better
(because the on-the-wire protocol and a significant proportion of schema
are standardized).
The differences primarily are in things like how to create indices, extend
schema (those are different for each server). Many applications don't need
to do those things, and they tend to 'just work' with all LDAP servers.

If you're serious about your product's quality I _would_ advise doing some
testing with every LDAP server that you intend to claim support for.

Active Directory is often the most oddball. Many of the other LDAP
servers share a common heritage and therefore the differences are
less pronounced.