Force a Zone Transfer

Greetings, I need to force a Zone transfer between my primary donain controller with my backup domain controller. I'm running OS X Server 10.4.8. I noticed last night that my secondary domain controller hasn't talked to my main domain controller in weeks. I could copy the contents, from one server to the other, but I would rather do a zone transfer. Does anyone know any command line tricks or GUI tricks to do this? Thanks.