When to use a stub zone vs. a cond. forwarder

creamy_stew

I'm studying for the 70-640, and I think I'm a bit confused about when to use these. I've used stub zones in the past and conditional forwarders seem to accomplish more or less the same thing.

earweed

Here's a technet article that answers your question pretty well.
Contrasting stub zones and conditional forwarders: Domain Name System(DNS)

RobertKaucher

Conditional forwarders help resolve queries to any domain not recognized by the DNS server. A stup zone is non-authoritative for a specific domain. It holds the SOA, NS records, and the A records for the DNS servers for said zone. This means you nolonger need to worry about zone transfers as you would in a secondary zone (which is a read only copy of the full zone).

This is how you might use both:
1. You have a trust with another domain. You add a stubzone so that you don't have to worry about dealing with a secondary zone. Now your clients can resolve hosts on the trusted domain's network.

2. You don't want to use root hints so you add Goolge's public DNS servers as conditional forwarders.

Just a quick example.

creamy_stew

RobertKaucher wrote: »

Conditional forwarders help resolve queries to any domain not recognized by the DNS server. A stup zone is non-authoritative for a specific domain. It holds the SOA, NS records, and the A records for the DNS servers for said zone. This means you nolonger need to worry about zone transfers as you would in a secondary zone (which is a read only copy of the full zone).

This is how you might use both:
1. You have a trust with another domain. You add a stubzone so that you don't have to worry about dealing with a secondary zone. Now your clients can resolve hosts on the trusted domain's network.

2. You don't want to use root hints so you add Goolge's public DNS servers as conditional forwarders.

Just a quick example.

Isn't that just a normal forwarder you're thinking of?

creamy_stew

earweed wrote: »

Here's a technet article that answers your question pretty well.
Contrasting stub zones and conditional forwarders: Domain Name System(DNS)

Thanks! That' clears it up a bit. Weird, though, I'm pretty sure I've used a stub zone for a separate ad tree (in a different forest) . I'm probably still misunderstanding something.

RobertKaucher

creamy_stew wrote: »

Isn't that just a normal forwarder you're thinking of?

Oooh. Good catch.:)