I am putting up a small tree of 2-3 servers just for ldap authentication.
My larger netware tree of about 30 servers I use SLP with a DA.

Do I need to use any SLP at all for my 2-3 servers? They are on the same
subnet. But we are not allowed to do multicast at all. So I have always
turned it off.

I have 2 servers installed now and they are communicating fine DS wise
without a DA and without slp multicast.